its neat to see how similar they are in this configuration, as ive seen this too, so when people ask what cam and i would say, one that opens the valves, or one that is 210-230 ish will be fine with mild events again i agree the 216 st1 is a better cam for a 4.8 but people are always upset there is no chop, so also since people have no idea what they want and would rather chop than make better power average the ss2 was born, and i started calling it sloppy stage 2 because its a joke, based off everyone's needs to have stages. the funny facts are the 200$ price tag, and the fact that as far as we can dig up it was designed by GM and ordered from Elgin Industries to be tested in development by GM engineers since before the Engine was released, so no one can say that this cam is a copy or Chinese is the absolute icing on the cake
@richardholdener17274 жыл бұрын
tighten the lsa for the chop
@newdeathscope4 жыл бұрын
Hey Matt, is there a cam you'd recommend for a 6l with minimal chop? I'm looking for something that works with a turbo but doesn't sound like it's a crazy engine in a sleeper.
@nathankelly69474 жыл бұрын
@@newdeathscope SS1 all day. great all around cam.
@000martin34 жыл бұрын
newdeathscope he literally has hundreds of videos just testing cams. Hundreds. Go check them out and answer it yourself
@topbrent4 жыл бұрын
Matt, very interesting. Just curious where you learned about the development of the SS2 by GM back in the day?
@socleanmx64 жыл бұрын
Okay you got to stop man im married with 6 kids if I dont see your videos at 340 am I miss you more than my wife and kids😂😂. Thank you for the time and energy you invest in us gearheads and for the content.
@richardholdener17274 жыл бұрын
this one took a lot of time
@robertbaker837 Жыл бұрын
This is Richard’s masterpiece. Saw this when it came out 3 years ago and it opened my eyes to what these shorter duration, higher lift cams do on the smaller LS motors. When you consider some of the newer cams that have come out since, they’ve sort of continued that trend and Richard was onto that way back in 2020. Bravo!
@TheDrivewayEngineer4 жыл бұрын
I've said it a million times. I break my cam choice down by whether I'm willing to buy a converter or not. If so, am I willing to buy new pushrods or not? Then by price. 10 ft/lbs down low, or 5 HP up top is not going to change anyone's life. Hell, but the cheap cam, tell people you bought an expensive cam if you just want to sound cool, no one will ever know.
@ZackNakazora14 жыл бұрын
So what would your cam of choice be for 3200 stall. 862 ported heads but small valves and tbss intake? 216/218 and then add nitrous? Makes a pocket rocket outta the 4.8
@rustysausage694 жыл бұрын
@@ZackNakazora1 My buddy ran a 217/224 cam in his 5.3 truck engine, stock 706 heads stock injection. His converter was a 2400 stall. You could probably get away with a mid 220's or low 230s duration cam (.600-630 lift) with a 4.8 and 3200 stall. Make sure you have the piston-valve clearance for that much cam though if you're running stock bottom end. It really depends on the displacement atop a couple other things (IMO). Larger displacement will "flash" more quickly than a lower displacement that has an identical camshaft because it makes more torque; because of that, you can run a lower stall speed with larger displacement. Because of fluid dynamics of the converter, a higher torque applied to it on the engine side will raise flash RPM to the output side. It also depends on induction and rear gear, because both of those will change the RPM range and load characteristics. I'm running the same "3000 stall" converter (brake stalled 3200, flashed at 2800) in my mild setup as i will be in my wild setup. My new setup (11.5:1 6.0, 235/251 .630 cam, CNC 11 degree LS3 heads, EFI, massaged LS3 manifold) won't be getting a higher stall than my previous setup (9.0:1 6.0 LS, 232/236 .600 cam, 243 heads, single plane, 750 carb). Much bigger cam, much higher compression, wild heads with less RPM dependent intake, same displacement, same gear ratios.
@TheDrivewayEngineer4 жыл бұрын
@@ZackNakazora1 you're misunderstanding me. I don't choose a cam based on the converter. I first decide, am I willing to foot the expense of a converter. If yes, I go bigger, if no, I go smaller.
@stvmassacre4 жыл бұрын
Hats off to Matt. His cam hung in there with some big names in the cam industry. 👍👍 "Now let's see what they make with boost." Richard Holdener
@socleanmx64 жыл бұрын
That baby summit cam would be the ticket for me !!!
@billybadass411thefirst94 жыл бұрын
socleanmx6 I did the summit 8719, stage 1 truck cam in my 4.8. I’m pretty happy. It is in a Jeep application though.
@rogergm924 жыл бұрын
That 8720 is impressive.
@Mattvardaman4 жыл бұрын
I just installed the 8718. It worked great for me! I wasn't expecting any chop at all but it sounds fantastic, and pulls great even now before its been tuned.
@phillipbelcher33714 жыл бұрын
You could save $100 and buy the sloppy can on eBay for $185 and have an almost identical power band.
@rogergm924 жыл бұрын
@@phillipbelcher3371 the sloppy tax hit hard. Sometimes it is at 280 reselling. Sometimes 200
@joshuacoomes63884 жыл бұрын
Thabk you so much for this test, and doing it NA first. I am building an NA flat top 5.3 right now and was going to buy the 8706, but I see that in my normal driving RPM, I am leaving a lot on the table over the 8720. Welp, fixed that issue before I wasted money on it. Keep working towards that Nobel Peace Prize.
@richardholdener17274 жыл бұрын
happy to help
@projectturbocoupe48972 жыл бұрын
I'm eyeing my 8706 right now and trying to decide if I should do an 8720 instead...
@michaelphillips98702 жыл бұрын
@@projectturbocoupe4897 you know after seeing this that 8720 looks really appealing
@JonnyAbs-04 ай бұрын
@@richardholdener1727 do you think the 8706 might be better than the 8720 on bigger engines like 5.7 and above?
@patlandymore70354 жыл бұрын
That was a ton of work and in many ways your best test yet! Thank you!! I was a bit surprised to see how close all the cams were. Feel they will definitely start to make quite different power past 10 psi of boost. Can’t wait for Part 2 😁
@richardholdener17274 жыл бұрын
I don't think you will see that but that is why we test
@63chevyll304 жыл бұрын
in my opinion, i think boost and back pressure levels are the only thing that might change if the same test was done with a turbo.
@badexamplegarage4 жыл бұрын
Your dedication to your craft is inspiring. I log into all my Gmail accounts to sub and like these videos. Love you work, doing my part to get you to 5 million like you should be!
@richardholdener17274 жыл бұрын
thnx bro
@Cobra427Veight4 жыл бұрын
I think everyone should " Vote Richard" for doing so much work, to entertain us . ✔👍🤗
@chipcurrey6534 жыл бұрын
It's almost like Elgin had to do real design and manufacturing controls to achieve IATF 16949 and become an OE supplier.
@hydrocarbon82724 жыл бұрын
bUt No SpInTrOn DaTa! lol
@prestonmanley84474 жыл бұрын
Test the tick towmax stage 2!!!!
@sofuzzywuzzy4 жыл бұрын
This test has told me to get a more mild cam for my 5.3 build. Thanks for another great video!
@clutchkicker964 жыл бұрын
Heck yeah! Thanks for sticking with it and taking the time to run them!!.
@rweasel8014 жыл бұрын
Great video! Thanks Richard! I'm looking forward to part 2. It would be awesome to see this test with other LS engines (5.3, 5.7, 6.0..). Keep the fantastic content coming!
@bcbloc024 жыл бұрын
Summitt 872044 for the win! Looked like it had the highest average power and barely gave up anything on top.
@RumblestripDotNet4 жыл бұрын
Tests like this, it would be great if you could dump the data into a Google Docs spreadsheet so that everyone can sort the data and compare as they like.
@jaket60074 жыл бұрын
If someone was particularly enthusiastic or good with that kind of stuff, They could do it for him. It is something I would thoroughly like to do but I don't know Jack about computers, but I'm slowly learning for work
@ACatKrom4 жыл бұрын
superflow has a free viewer available for download. no need to even convert the data.
@ufarkingicehole4 жыл бұрын
Thank you Richard!!! You are saving a lot of people from making unnecessary mistakes. You da man!!!
@wyfiswanson4 жыл бұрын
so basically, for the price, you can't beat the ss2. (which we all assumed, but it's great to see the numbers)
@dilsher124 жыл бұрын
What I learned is for the 4.8 overcamming is pointless, the smaller summit cam is more than enough . Just add boost to get to the desired power level . Especially with a bigger turbo, it'll give nice driveability and fuel efficiency when out of boost
@Mastermindyoung144 жыл бұрын
And faster spool because better breathing down low
@rogergm924 жыл бұрын
Agreed
@rogergm924 жыл бұрын
It is the chop madness. If we forget about the chop, those smaller cams are perfect
@383mazda3 жыл бұрын
Turbonator - you weren't big into turbo regals back in the 90's were you?
@dilsher123 жыл бұрын
@@383mazda Was just a kid in 90s lol , but I do love turbo 3.8 Buicks .
@surephat3 жыл бұрын
People don't understand all the work you put in to make these videos. Thank you for showing!
@thegrandpumbaa4 жыл бұрын
As a follow up to SS2 vs the world with and without boooooost would love to see an hour long Rambletron with you and Matt discussing the ultimate LS cookbook. Sort of an update on the don’t BS me build that is so popular. I am wearing my #allcamsmatter shirt whilst watching this. Bring on part 2!
@Ugrasrava4 жыл бұрын
That torque cam produced a very happy looking curve. The peak numbers might not be there, but it'll put more smiles on faces when the throttle is pegged in real world conditions than a dyno chart. Smack an LSA blower on there and it'd be an absolute weapon that was still drivable and streetable enough to drive it to work every day.
@budgetoutlaws99784 жыл бұрын
Fantastic! Just what we need to prep for a turbo setup! Thanks for all the great videos!
@richardholdener17274 жыл бұрын
Any time!
@johnparrish92154 жыл бұрын
The point of the SS stage 2 is the price, it's a lot cheaper for the same performance.
@TurboDog73TX4 жыл бұрын
Facts. And the Summit cams have a VERY close price point to the Elgin.
@mcfero14 жыл бұрын
Yes just buy whichever one is cheapest at the time. I or my ss2 for 230. If it’s the same as the summit cams I’d go with those.
@rogergm924 жыл бұрын
You got the point. Cheap. Good and has part of the chop people wants. If people forget the chop they can go smaller with the same performance
@kennydeever49413 жыл бұрын
Boom, someone said it
@BuckingFastard4 жыл бұрын
Ok, I’m ready for part 2
@Mattvardaman4 жыл бұрын
Thanks for all the info you provide! Great videos! I’m going with the summit pro ls stage 1 truck cam for best over all power on the daily driver. Can’t go wrong with the 205/217 112+2. It’s about +50hp peak with power increases everywhere. Update: Installed the camshaft and it's awesome. Hits hard for a little cam.
@billybadass411thefirst94 жыл бұрын
Matt Vardaman I have that cam in my Jeep with a 4.8. I’m pretty happy.
@jsmcortina3 жыл бұрын
What pushrods did you use?
@Mattvardaman3 жыл бұрын
@@jsmcortina I used the stock 7.4 pushrods. I just bought new ones on for about $40. Two ls builds now, one 6.0 and one 5.3, both used 7.4 pushrods. Summit 8718 truck cam in both motors. I just did valve springs on my 5.3 two days ago, used the summit 174002 springs. That’s their ls6 springs, since the gm blue springs weren’t available most of the year, they made their own line.
@Mattvardaman3 жыл бұрын
The summit pro ls truck cams have the same base circle as the stock cam. So with stock (or stock replacement) heads, rockers, and lifters you’ll use stock pushrods. Good luck!
@kylemilligan7524 жыл бұрын
Please add the benny hill theme song during the fast forward😁
@crw36734 жыл бұрын
That would had been the icing on the cake!
@richardholdener17274 жыл бұрын
not sure if its copy right, but I am humming it when I edit!
@jwillettgn4 жыл бұрын
Really liked this test Richard! Building a 6.0 now and would like to see the SS2 vs the Tick Performance cam results in the larger engine. Keep up the good work!!!
@crw36734 жыл бұрын
I also would have loved this test on a 6.0! Even the more popular 5.3
@richardholdener17274 жыл бұрын
minimal differences
@jwillettgn4 жыл бұрын
Richard Holdener - I have some L92 heads (new) I will be running on it with a GM Performance carb intake that also has the injector bungs PN 25534416. The 6.0 block is new from GM. Crank and rods coming from a L92 that has a questionable block. Just need pistons now. Looking at the Tick cam because I know Jonathan well and their shop is not that far from me.
@rickyr77904 жыл бұрын
Awesome. Itd be cool to test non ideal situations, like small turbo, or log manifold with NA cam. It would be interesting to see how the engine responds to restrictive exhaust pressures, since not everyone has these awesome setups.
@ryangertridge4 жыл бұрын
Perfect video Richard...
@richardholdener17274 жыл бұрын
Many thanks!
@karencrilly16334 жыл бұрын
Mr.Holdener, I left a very very important comment, message,kids like a mini book.I do apologise for the length of the comment butmydad is 80 years of age had some really meat up stuff happen to his 1996 ss Impala just about mint I might ad just over 40 thousand miles on it.So as u always have for me could you please look back on your last vid I believe about 440 thing u were doing.Thank you so much from Kipp n Karen from TAMPA FL Your advise has always helped us so so much THANK YOU AGAIN AN GOD BLESS YOU!!!
@richardholdener17274 жыл бұрын
why don't you leave the comment here
@karencrilly16334 жыл бұрын
Ok, I'll redo the story deal right hear.
@Spongebob_mc23 жыл бұрын
Mr. Holdener from watching this video I can tell you must really love what you do.. Good job
@peteklassen53384 жыл бұрын
Rather than adding boost I would of preferred to see the same tests done again on a larger engine. Great video though. Lots of great info.
@brandonpanozzo864 жыл бұрын
So happy to see your channel growing Richard you deserve thanks for the years and years of research and continuing research and Sharing your findings you rock
@richardholdener17274 жыл бұрын
Much appreciated
@fixins4 жыл бұрын
Been waiting for this one! Thanks for the tests, Richard.
@Woodstock_Warrior4 жыл бұрын
Awesome! Now let’s do the same test on a 6.0!
@123beyond1234 жыл бұрын
Just move the RPM range down and the hp/tq numbers up a bit. Ta-Da!
@crw36734 жыл бұрын
I agree! Would have preferred the 6.0 or the more popular 5.3
@allanb32224 жыл бұрын
He had a video already on it.
@TheCummins12124 жыл бұрын
I always enjoy your videos but the title of this one is the absolute best.
@richardholdener17274 жыл бұрын
should be popular with the internet
@jakewade73884 жыл бұрын
Great Video! I was happy to see the Cammotion guys in one of your videos!
@Mrfastdad4 жыл бұрын
Great job Richard! Awesome details. I am ready for the boost! Haha
@richardholdener17274 жыл бұрын
You and me both!
@shannonsisk4 жыл бұрын
I really didn’t think they would all be THAT similar. Great info
@nocturnal00724 жыл бұрын
They might spread out some on a 6.0/6.2 build.
@shannonsisk4 жыл бұрын
Nocturnal 007 for sure. Would be neat to see
@hill_customs68074 жыл бұрын
Great comparison. What I got out of it was almost every stage 2 cam made very close hp. And might as well always order a SS2 cam for the price point. 😀
@GonzosGarage4 жыл бұрын
Damn it took u long enough. Its like u have been on lockdown or something 🤣 my boy has a 4.8 on the stand and I told him to wait on this test plus watch ur other videos. Love the LS content.
@deanstevenson65274 жыл бұрын
Gonzo's Garage : wise you are, Grasshoppers'an...
@DBSSTEELER4 жыл бұрын
My conclusion is you don’t need to spend $400 on a cam to make good power.
@tylerleonard40074 жыл бұрын
Great test! I Sure would like to see how the Summit stage 1 Ghost cam would do here. I'm in the same mindset, smaller cam for street car.
@rlr240sc4 жыл бұрын
Love you videos. Can’t get enough of them
@nosnerd19674 жыл бұрын
another great vid . Clear and Concise
@deanstevenson65274 жыл бұрын
Al NOSNERD : Yup...Everythang....
@michaelblacktree4 жыл бұрын
I can imagine how many hours went into all those cam swaps. Kudos! 👍
@raceadvantage4 жыл бұрын
This should have as many likes as views, just for the amount of effort involved to do this test.
@Chadlistentome4 жыл бұрын
It’s pretty incredible how much more expensive the competition is for an identical result. I always had a feeling this was the case but you just confirmed it. What I didn’t realize is you would want to run a minimum of a 3000K stall with it. Thanks Richard!!! Looks like that was a ton of work.
@MrBlackbutang4 жыл бұрын
Wish all my employees would work that fast and great precision! Thanks
@briannutter46564 жыл бұрын
Great work as always Richard!
@lastcreations88454 жыл бұрын
Wow finally reasonable cost high lift at lower duration, 8720 at 10psi, 15psi, 20 psi please :) Amazing work as always ! Thank you
@michaeloboyle87984 жыл бұрын
That elbow torque wrench for the cam bolts. Bold move to pull on the internet. :)
@richardholdener17274 жыл бұрын
they were coming right back out in 10 minutes-besides, We did a torque wrench challenge -my elbow was within 1
@michaeloboyle87984 жыл бұрын
Richard Holdener I wasn’t criticizing. :) I’ve done it with a cam that I was leaving in.
@michaeloboyle87984 жыл бұрын
Richard Holdener I’ll send you a calibration sticker for that elbow.
@inspector13jjf4 жыл бұрын
I love these cam tests. I run a custom Comp Cams camshaft (.513/.513 & 115 LSA) on my turbo 4.3L V6. We ran lt N/A on the dyno for break it. Made a great amount of average torque.
@nitewolf9064 жыл бұрын
Small summit cam has been added to my cart for my next order. Thanks for all the work you do Rich
@richardholdener17274 жыл бұрын
I bet they change the name on it
@nitewolf9064 жыл бұрын
@@richardholdener1727 well im ordering it before they go out of stock and there is the price jump. Supply and demand lol.
@nitewolf9064 жыл бұрын
I dont even have an LS engine yet for my swap either lol.
@thehotrodstation33134 жыл бұрын
My theory is adding boost will mirror the power curve,only higher on the hp scale.. A wise ls cam master told me that once. And backed it up with countless dyno pulls! 🤔😏
@karencrilly16334 жыл бұрын
On this video ,I just simply and undoughtedly have always LOVED AGAIN LOVED the lope sounds on big cans as long as they don't make the engine turn into a totally flat dog on accellaration. Kipp n Karen from TAMPA FL. Have a blessed day,an please read my comments on the other 1 or 2 vids back please it is very important to me and my father Thanks a MILLION!!!!!!!!!!
@sanchezable4 жыл бұрын
I just installed the summit 8720. In my Lq4. They call it the high lift truck stage 2. .600 lift. Vs .524 lift for the exact same cam without high lift. I figured that is good for 10+ hp without the need of a TC. I can’t wait to install the engine.
@luckautofab44614 жыл бұрын
Somebody, holley, jegs, summit etc. Send this man a 2 piece timing cover please
@youngwork4 жыл бұрын
Kevin Luck this^^
@krajus834 жыл бұрын
Pretty sure the balancer still needs to come off with the 2 piece cover. Kind of irrelevant
@richardholdener17274 жыл бұрын
I have several
@luckautofab44614 жыл бұрын
@@richardholdener1727 may make this test go a little faster or easier
@Rebel635csi4 жыл бұрын
Thank you for the hard work. Swapping that many cams must not have been fun. So far, SS2 at $200 is making same or similar power as cams twice the cost. I’m also glad to see that, as someone infamously put it “it falls on its face at 5K” is just not true.
@dudemcgee2563 жыл бұрын
Would love to see the summit 8720 cam run on a 6.0! Really would be cool to see all of the summit pro ls cams run on a 6.0!
@jesselynlohr46354 жыл бұрын
This is great because I'm building a 5.3 with a turbo cam now. I was kind of surprised that there was not much variation between the cams. I'd be curious to check the prices of all the cams too so low cost builders can get a good cam for cheap. I'm willing to bet under boost the power and curves might be the same. Great video, thanks for doing this! Am I on my wife's account? Lol
@jeffschwartz51994 жыл бұрын
Can't agree with you more. Yeah, I think the power curves will be much the same with boost. I like your work ! 🏇
@adalmadera254 жыл бұрын
Thank you for sharing and your hard work. I still read your articles in the car magazines.
@richardholdener17274 жыл бұрын
Wow, thank you
@stlchucko4 жыл бұрын
The real winner for this 4.8L is the small Summit cam.
@richardholdener17274 жыл бұрын
agreed
@phillipslaton78704 жыл бұрын
What is the part number for the small cam.
@timeriksen67663 жыл бұрын
@@phillipslaton7870this is old as balls, but its a sum-8720
@foxbody85853 жыл бұрын
That’s my thought too! If you had of run the smaller Elgin 1839, you’d see the same thing, same peak HP but higher torque thru the mid range. But everyone wants beefy lope of the stage 2.
@stephenhodge64413 жыл бұрын
@@phillipslaton7870 they discontinued they cam kind of... They changed something I guess but it was replaced by 8720r1
@randystingray65444 жыл бұрын
Another fantastic video from Dr Richard Holdener. You should have named this video "Cam City" lol. Tons of information there Richard, I guess since every cam is a turbo cam you need to pick one for your need. Street, Race, Daily, whatever you want or need...
@torymblue20003 жыл бұрын
Hey, I haven't actually seen you wrench before. I enjoy this. Most of the time it's just graphs, sometimes we get some noise, but I like this kind!!! Def a treat. Maybe a "See me work" quarterly or something.. Hello Man crush!!
@richardholdener17273 жыл бұрын
Many of these vids are from older tests shot for magazine stories-before You Tube-I do video on every new test
@mattiasjansson41024 жыл бұрын
Awesome job Richard!!
@MRE_Motorsports4 жыл бұрын
Always great information from Richard!!
@johnhazel99864 жыл бұрын
RH makes quarrantine easy! Just watch his videos. So from the group of a dozen LS videos, a mid budget street combo to rule them all has Edlebrock cross ram intake on a high compression LS3 6.2 with a 220/220, 108+4 and extra long tube 1 7/8" and meticulous attention to the exaust after the collectors (3" all the way?) ....And when it's time to get serious, go low compression, wider LCA and twin turbo on the above combo.
@justin_parks4 жыл бұрын
I know it's alot of work, but I'd like to see this with a bigger engine. 6.0 or 427 maybe
@crw36734 жыл бұрын
I definitely would have preferred a 6.0! Even the more popular 5.3 A little disappointed in engine choice.
@SloppyMechanics4 жыл бұрын
imagine slightly higher numbers at lower rpm's, viola
@daviddavis13224 жыл бұрын
@@SloppyMechanics Totes. Take number. Divide by 4. Times 5. Bam, 4.8 to 6.0 (same heads) numbers. Wondering about the turbo? Take these numbers and then run through Richard's NA->Boost estimator. What ifs are pretty damn easy to get rough order of magnate figured out.
@nowayjose5964 жыл бұрын
I'd like to see it on a 6.0 as well, except with larger differences in cam timing. Most of these were all within a few degrees of each other so it's no surprise that their curves looked similar. But what about a cam with a reverse split? Or one with a lot more exhaust duration like many of the LS3 grinds have?
@rustysausage694 жыл бұрын
That test would be of useless, everyone here needs to realize that its all about percentages! Identical camshaft, identical compression ratio, identical induction, identical port designs, identical rocker arm ratio, there is almost 0 variables! (Valve size doesn't matter in this instance) Adding the same camshaft to a 6.0 as you did a 4.8 will yield nearly IDENTICAL % power gain as it did in the smaller displacement. The power gain from the very first dyno graphs was 8.6% from the stock 4.8. Given a stock 6.0 horsepower, add 8.6% and thats how much power the camshaft will gain on a 6.0. Call it 435 horsepower. The curve shape will be nearly identical because everything is the same! For reference on how dead-nuts that number is, my past 6.0 setup with .015 bigger lift and 4/6 more degrees of duration cam makes 465 horsepower.
@tedtrotz81454 жыл бұрын
been waiting for this one. about to pull the triggeron a new bump stick but waiting to see this one. Thanks!!
@joew78974 жыл бұрын
Just my 2 cents but I think it would be interesting to see average power over run. Thanks again for the videos. They're great and a fantastic source for unbiased results.
@badexamplegarage4 жыл бұрын
Just bought the SUM-8720 for a 5.3 currently NA with boost plans thanks to this video. Great content as always! Wish I had a Summit discount code to get you some credit!!!
@night_drive_led21764 жыл бұрын
Shocked how these cams very close but i am sure because of these cams made for 5.3 and 6 liter where you will see real difference and 420hp max of this engine setup.
@Crysmatic3 жыл бұрын
I've crunched the numbers. The best cams had intake valve closing from 65*-71* with about 2 bhp difference. Overlap wasn't an obvious factor. Cams with exhaust valve opening earlier than 79* made less low end torque, and the best performers were around 71*. I'd say an optimum cam for the 4.8 is 276*/276* 0.600" lift, and 112* LSA. A strong performer with good idle and vacuum to run power brakes. I'd extend that to the 5.3 with 706 heads and stock intake manifold.
@plumbs71994 жыл бұрын
Thanks Richard , I've learnt so much of your testing and hard work !
@GlobalMediaInc4 жыл бұрын
Let's Go! Been Waiting On This One...
@section8motorpool4664 жыл бұрын
You know what people really want to know? The true factory HP ratings before and after smog Reg’s! That would be cool Dino info!
@jessemurray17574 жыл бұрын
what do I think? By golly I think you're right Richard.
@nowayjose5964 жыл бұрын
Thanks for all your hard work on this! If you decide to do a Round 2 on a 5.3 or 6.0 might I suggest cams with larger differences between them to really elucidate what effect the different valve events have on an LS. Like a reverse split or something with a lot more exhaust duration similar to many LS3 grinds.
@richardholdener17274 жыл бұрын
I tested what all the manufacturers had as stage 2 turbo cams
@nowayjose5964 жыл бұрын
@@richardholdener1727 I tried to send you a cam by contacting you on Facebook ;-) I'm sure you get a ton of messages, especially with the way this channel is growing. Thanks again!
@joshtipton89123 жыл бұрын
Excellent video... thanks for all the effort
@Turbogto_guy4 жыл бұрын
Nice test. Good job. I got excited when you said smaller summit cam. I thought it was gonna be the summit can I have, the stage 1 ghost cam 222/233. Seems like a pretty good cam. I like it much better than the Brian tooley stage 2.
@MartinEMercado4 жыл бұрын
Thank you for making these videos I’m on a mission to see all of them!
@lukemorgan33684 жыл бұрын
Now I have a internal battle between the BTR stage 2 v2 truck cam and the stage 3 V2 truck cam, putting in a mild 2600-2800 converter and stepping up to the stage 3 could negate some low end loss! But, the chances of me seeing the drag strip are slim as I am a broke college student/engine enthusiast, not a great combo XD! I found it interesting that the smaller summit cam stacked up well against the others lower in the rpm range. If you aren't planning to rev to the moon and back, that seems like the perfect street cam for a smaller engine with future boost in mind.
@ryancivil4 жыл бұрын
Amazing video! Thank you Richard!
@twinturbo4964 жыл бұрын
Thank you very much for this video... I love it!
@richardholdener17274 жыл бұрын
Glad you enjoyed it!
@georgiaboy15794 жыл бұрын
Great cam video
@dadsgarage4204 жыл бұрын
I think you did a whole lot of work for us, thank you I watch all your videos!
@josephanders60524 жыл бұрын
For the price cant beat that summit stage 1 or ss2. I wonder how much time a two part timing cover would save
@crw36734 жыл бұрын
Probably would have saved 20 minutes, per swap!
@ls3fox5934 жыл бұрын
Would love to see the small summit cam vs ss2 on a 6.0
@tptrsn4 жыл бұрын
Also vs. the SS3...
@matthewfoggon38934 жыл бұрын
Great upload and comparison. I was surprised the cam motion cam had such an early Evo for a dedicated turbo cam.
@elviswon68954 жыл бұрын
that Clay smith cam had a smooth power curve....nice. That one or the smaller summit for sure on this motor. NOW I'm interested to see if the 'turbo' cams do better under boost!
@fortnoxz713 жыл бұрын
I found most of these cams were pretty close to the same. Slight variations in lift and lobe seps. I would have like to see cam wars with same lift and durations but different lobe seps. Especially with the long tube headers you used I would have liked to see more scavenging numbers and differences. I find it amazing the curves with such a high lsep at the 115 mark I thought that would be better with a 105 sep. great video. That was a lot of work I bet. Good job
@richardholdener17273 жыл бұрын
see the lsa cam test video
@ProfessorCsATVs4 жыл бұрын
Thanks Richard! I’ve been waiting for this video to decide which cam I’m going to order for my 5.3 swap. Now I know! Love the content! Small summit cam FTW
@TATER_244 жыл бұрын
I like the small summit cam. But I think the Comp LST is gonna be the power winner when boost gets applied..
@interceptor01664 жыл бұрын
Its time. Ready to rruummbbllee
@Torched_TransAm4 жыл бұрын
On part 2 video,would be great to see a summary chart of the cams hp/tq and peaks rpm before you make your conclusion. Or list them in your video description.Thanks
@zmanphx4 жыл бұрын
My understanding turbo cams is they have less over lap. On forced induction higher overlap blows out the air fuel out the exhaust. With dual over head cam setup you can phase the cams to control overlap on bottom end vs top end using factory ecu programming. That is what Nissan did with their 300z twin turbo which I use to own.
@richardholdener17274 жыл бұрын
think about this-boost doesn't blow out of the exhaust when the exhaust back pressure is higher than boost-more likely go the other way
@zmanphx4 жыл бұрын
@@richardholdener1727 , Yes forgot exhaust back pressure factor on turbo but not on supercharged so much. Turbo turbine design is big factor.
@jblefebvre91184 жыл бұрын
I run the Tick stage 3 turbo in my 5.3 with on3 78 turbo. looking forward to your boosted test! :)