Dude, seriously...you've got the best gearhead channel on the Tube. That 4.8 is a trip

"If I did it again, I would change". DO IT AGAIN!!!

Do another 4.8 and do all the things you wanted to change! Would love to see what a 4.8 is actually capable of!

This original Hot Rod article and Sloppy Mechanics (Matt) inspired me to start my turbo project. Thanks Richard

This is the one that started it all for my dad and I.

Something I would really like to see: Take an NA, 7000+ rpm LS using the typical LS7 lifters that most people run and test running them at various plunger preloads from ~.020" all the way up to .180" or so with no changes other than the pushrod lengths. See if there is any power difference or if the curve falls off at earlier/later RPM with different amounts of preload.

Finally. This video and the follow up "big bang" videos are wayy overdue.

Sounds like 2.5 HP per Cube is a RELIABLE LEVEL for your MODS! Whether 4.8L or 6.0L or anything in between! Great work!

People using stock injectors or non-flow-matched injectors are the real problem

I remember this being in a magazine! I absolutely LOVE the LS!

I' d personally love to see the 4.8 pushed futher in a future video. Bigger cams, bigger turbo, less back pressure more boost iced intercooler 1300-1400 +hp?

I remember reading this article and being amazed. Thanks Richard for all your hard work and providing all this wonderful information

Thank you for your test and your time Richard, I appreciate a lot your tests on LS

This test was the test that got me into ls motors.. thank you for all your work!

Keep the facts and stats coming! Great content. Seen one video and I've been binge watching them while i can

Yea, I'll be happy with just 7.5lbs of boost on a 4.8 in my GMT400 swap.

Richard, I really appreciate all your videos and the information that you're sharing with everybody. Most of all I appreciate how humble you are. Thanks bro

Making my day with all this daily content... Thankyou

I appreciate you for taking the time to speak about it. Lots of good ideas and tips

I loved reading that article, I’ve read it several times great writing, witty and humorous at times, just very interesting

Great video I am building that TwinTurbo 6.0 in my 71 GS so I really dig anything that can be scaled up to that engine 👍 👍

I love your no bs approach!!

This is the most concise, informative and entertaining performance channel on KZfaq

Get a larger map sensor. And keep turning up boost in the 6L. 👍

I remember getting the magazine back when this was new and was like OMG!

These video's is a great help and eye opener.

“That’s a LS cam. This is a LS motor. In it went!”

Thanks for all your videos brotha really informational!!!!

This is a great video Richard!

I always enjoy these vids and now that I got it connected to my big tv it's just that much better lol.But thank you for taking the time to undo to make these vids !!!

I had a 4.8 in my 2007 Silverado Regency rst , with cam and supercharged I loved that motor and it being a 5 speed truck was so fun

Damn these 4.8s are AWESOME!!! BEST BUILD ON A BUDGET 😁😁

One of the best, if not the best stock block Gen 3 test ever done!!!!!!

You say in your video "Let me know what you think" Well I think you know what your doing. Richard and Popodopolis are my two favorite engine builders. Richard keeping cost in mind and being more experimental is what I really enjoy in his videos

Junk motors ( the ones we ain't afraid of blowing that are made from junk) always perform the best when on a budget. Thier loose and have compressed every part that would of been loose if we cared and built it new. This bold has certainly inspired and old school to try the new school. Keep up the good work!

Love this channel. Will help me a lot with my Volvo 4.8L swap.

Your vidoes are amazing. Thanks man!!!!!

Holy Jesus. That’s a whole lotta powa. I will have to go with a build like this.

After this video I'm saving it and going to build my 4.8 2001 gmc sierra that's my dream i don't want any other truck everyones been telling me it's no worth it but your video's Proves it in every way it is Totally worth it

This man is a genius on motors

I learnt heaps ! Thanks !

I want to get a 4.8l and turbo it, but can’t decide weather to go twins or a single 🤔 your videos with a 4.8l is helping me greatly!! Thank you 😆

Richard, Great channel. Not sure how I missed it up until now. You should do a budget, street friendly 302 SBF EFI turbo build for us fox body guys.

The Big Bang 4.8 definitely needs to go back on the dyno. 👍🏻

Thumbs up just for the Sherman and Peaboby reference. Thanks for the knowledge!

I love your videos. Thank you.

4.8 big bang #2! Best channel on youtube!

I would love to see you do this with a gen 4 4.8, I just picked one up myself from an 09 savanna and I have a feeling it’s going to love the boost.

O man this iconic classic

Oh wow. As soon as I heard you say you'd thought it was a 5.3, I started getting suspicious. Then, when you said the power had hit 1,200+, I was like, "This is it." I'd read the article in HR several years ago and was floored. I love it when a reference to something you saw from years ago gets another "life" so-to-speak. This was one of those moments. Come to find out, I liked your stuff before I liked your stuff lol.

The real killer is ignition timing and people trying to push 91 pump gas to that level. I know because I've pushed them on 91 until they broke. Now I use water methanol and I'm thinking of moving to e85 and meth injection on the next setup. I would definitely like to see a fuel vs ignition timing curve for a boosted 4.8/5.3 in a dyno video.

More 4.8 testing please great job.

I still have those magazines at my shop right now! I had just built a LS7 67 Camaro and I planned on doing a 4.8 turbo build In my wife's 240z. I never got around to it tho...

"Use what ya got",,,,,, man after my heart. And I don't even go that way! Ahhhhhh hahahahha great channel. I've said it before no BS , no brag, just facts! Love it.......

We need more of these big boost videos on stock engines. Just open the gap, use a good head gasket and let it rip!

Your in the age of goodness and you are a god of hp..building a car during my off time for Martin us 131 drag way🤙😷

I think you should do test again but at this point with everything we know that works well. Large ring gaps , e85 or m1 , Bosch 210s or bigger , 5 bar map and giant turbos 88s or so. Only thing to find out out than is when rods decide to say peek a boo. No limits on boost or fuel.

Cannot.....Stop......Watching! Both Steve's, Richard, a Westech Dyno ...What a combo. Who needs that other Magazine guy. lol

Great information! Thanks.

Boost also depends on the intake manifold(s), what turbo(s) size, etc. if you have a better flowing intake system, you’ll make the same power on less boost than a system with the same FI but a restrictive intake system. Example: I’m a miata guy. A popular setup is a GT2554R turbo @ 16psi. That’ll do about 225whp with 3” intake piping and 2.75 or 3” exhaust. The other popular system is a GT2560, which is a little bigger turbo, @ 13psi. With the same 3” intake/exhaust and the same size intercooler, the 2560 does 250whp@13psi.

Subscribed. Awesome videos

Richard - please pan out a bit further so we can see the cot and shaving station you keep by the dyno 😁

Awesomesauce...and the multiple motors I have blown up at 12psi IS on me lol but this new forged 6.0, 120lb injectors and bigger turbo is going to make that 1000 mark before I keep driving my jalopy across the US.

Would love to see a SBE gen4 5.3/799 head with just ring gap, studs, cam and spring upgrades taken to 29 psi

To the way back machine Sherman.!

Richard saying he did one ring gap and took the same amount off the rest Legendary!!

Run the 4.8 again, please! And then put it up against a similar-spec 4.6 3-valve! Keep it up, boss!!!

Great videos, I'd like to see the same kind of testing done on a 6.1 hemi

There are two channels I watch for pure unbiased information. #1 is Richard Holdener, #2 is Project Farm

All these videos make me want to swap in LS :) I've seen mod 4.6, any plans to turbo an old mopar magnum? I wonder how they take the boost :)

What did we learn? We learned i want one in a little car at only 1000hp. Great information

Very intresting 🙏

Big fan of these videos, and I’d live to see more. Given your testing this far, what is a sustainable power level for these sbe engines?

We need to see a video about each of the motors!

Richard Holdener im not a ford guy but i want to see a big bang 7.3 Godzilla!

Sherman and Peabody man you just took me back lol

I think more guys will relate to the smaller ls motors videos...I love my 4.8...it's kind of like my badge of honor to say O it's just a 294ci 4.8 ...I would love to see some of the same size turbo's with different exhaust AR housing on the 4.8 or 5.3 how much of a difference will that make...keep them video's coming

Be nice to see back to back to back to back pulls at that power over several hours really get some heat in it and see what happens just as if someone was getting in it on the highway to see not just how much it can handle, but how long it can reliably handle that. Would be a lot of work but would be great to see.

Tick Performance proudly offers our Elite Series of Camshafts designed specifically for 4.8L & 5.3L Engines! Using the latest and greatest technology available, we've put together a complete line of Camshafts that are designed to meet every goal, from mild to wild. Our Elite Series of Camshafts are all manufactured by Cam Motion and are updated with a new version every time an advancement in valvetrain technology becomes available, so they're ALWAYS cutting-edge! Although we suggest measuring for piston-to-valve clearance during ANY camshaft install, every Elite Series Camshaft is designed to fit in a stock engine & stock heads with adequate clearance unless otherwise noted. These cams are designed to maximize power, reliability and valvetrain longevity.

Thanks to you now i can't wait to try a 6.0 destroked in my xj when the 4.0 goes!! Might have to hit it with a hammer and nitrous to speed the process up 🤣🤣

God damn that’s neat

That little 4.8 is amazing!!! Do you incorporate the knock sensors on these runs?

I know now what i am going to do for my Colorado Xtreme

Could we please see the SBE 4.8 tested with a Holley high ram intake and cam swap. Also see the result for a single and twin turbo application using the Holley high ram intake on the SBE 4.8. Thank you for your time. Great videos.

23 pnds is the right point 1077 hp can move everything u swap in to to be a 4.8 ls and push this power is a good choice thank u for this video

You gotta push a gen4 bottom 4.8L Also wanna see a 4.065 lq4/9 w/ls3 pistons under boost and maxxed NA (maybe flycut em)

Love your channel man ! Thanks for all the great info ! Im currently building a drop in motor to replace my current turbo 4.8, which pistons would you reccomend if you did it all over ?

I'd like to see figures on swapping to a shorter stroke crank on the LS. I'd also like to revisit the mod 4.6 2v and see if a eBay turbo can make more power than heads and cam for less money.

Methanol fuel, ice water in the intercooler, stage 3 or 4 ljms turbo cam, properly sized turbos, 4 bar map sensor. Timing in the single digits before 5800, spin it up to 7k, make power

Richard Holdener LITERALLY PROVING THE INTETNET LS CLAIMS WRONG! The diffrence between Richard and all "the other guys" is experince and he shows you first hand dyno information so. You know everything is real and true.Hands down best engine channel

Love to see what a gen4 4.8 would do since it has short stroke and longer rods

Wanyed to see how much power you would make with this set up Texasspeed hot cam with springs for LS1, slp ram air lid, MSD manifold intake, Texas speed headers with catted ypipe and cat back set up 3". This is build i. Working on my 99 WS6 with LS1, next year will add DcS1 procharger with 10 to 14lb boost. Everything else stock. Oh and 36lb injectors might upgrade throdle body

It's theorized that the ideal rod/stroke ratio for turbocharging is 2.0:1... so I'd like to see that tested, and what results. ;)

2:50 thats what i am doing atm, top of cylinder walls had been damaged by piston (84mm piston in 83.8-83.85mm bore, last owner(tuning company) did everything wrong, even rod bearing clearences are 3x the factory spec) so i hone it out to 84.05mm, and will reuse old rings (in that 83.8 bore clearance was only .014", when forged piston needs for circuit application like .021-.025", and after honing i will end up (what looks like) .031"-.033" ring gap as i want this engine to max out 950hp turbo, and for $800 i paid, engine with forged internals and arp everything is steal here in Slovakia

Hmmm, might have to put one of these in my ‘63 Chevy ll.

@Richard Holdener taught me one thing, mainly: Turbos seem to be THE lowest-stress way of making big daily power, as they don't require this: (very rough estimates for emphasis in this post, forgive the inaccuracy of the quanta) A) make 1500hp gross. Spend 400 of it on driving blower, net 1100. instead, they seem to provide: B) make 1150hp gross. Spend 50of it on backpressure to drive turbos. net 1100hp. I UNDERSTAND that more than 100 hp is required by the turbos, but 50 of that is HEAT energy converted by the turbine directly into compressing incoming air. In other words, exhaust that is 1200 degrees BEFORE the turbo is not at that temperature after the turbo. That selfsame heat "lost" (I know partially due to lower pressure after the turbo) is LARGELY used by the turbine instead of being discarded to the atmosphere, wastefully. The ideal turbo motor would have exhaust leaving at ambient temperature, for a true "closed loop" level of energy recycling. Richard taught me one thing, mainly: Turbos seem to be THE lowest-stress way of making big daily power, as they don't require this: A) make 1500hp gross. Spend 400 of it on driving blower, net 1100. instead, they seem to provide: B) make 1150hp gross. Spend 50of it on backpressure to drive turbos. net 1100hp. I UNDERSTAND that more than 100 hp is required by the turbos, but 50 of that is HEAT energy converted by the turbine directly into compressing incoming air. In other words, exhaust that is 1200 degrees BEFORE the turbo is not at that temperature after the turbo. That selfsame heat "lost" (I know partially due to lower pressure after the turbo) is LARGELY used by the turbine instead of being discarded to the atmosphere, wastefully. The ideal turbo motor would have exhaust leaving at ambient temperature, for a true "closed loop" level of energy recycling. These are rough estimates of a primitive sort. Supercharged and turbocharged engines are the only engines that come anywhere near close to providing motive power to the piston on the intake stroke due to the intake pressure being higher than the crankcase pressure. When that exhaust valve is closed, there are only two pressures on piston: intake tract on the top and crankcase on the bottom. Thanks largely to @RichardHoldener's explanations, I understand turbos and all sort of power adders much more than I used to. I have occasionally wondered if they used six strokes, as in, two succeeding power strokes, to extract even more work from the combustion pressure before finally letting it escape, would they have more efficient engines? I know that recompressing the combustion gases to get ready for the second "power" stroke would consume some power, but would it NET more energy harvesting from each drop of gasoline than the single power stroke does now? What would it be like with over 400 crank degrees being under pressure, especially if you reactivated the spark plugs from near TDC of the second stroke all the way to near the BDC? Someone can try this with an engine management system and custom 1/3 speed camshafts instead of the usual 1/2 speed. Just having the spark plugs fire for all 180 degrees of first combustion stroke then again for close to 180 degrees for the second combustion stroke may allow harvesting a bit more of the energy. However, one would want more cylinders to yield the same number of initial power pulses relative to "compression" pulses on the crank for smoothness, yes? Supercharged and turbocharged engines are the only engines that come anywhere near close to providing motive power to the piston on the intake stroke due to the intake pressure being higher than the crankcase pressure. When that exhaust valve is closed, there are only two pressures on piston: intake tract on the top and crankcase on the bottom. Thanks largely to @Richard Holdener's explanations, I understand turbos and all sort of power adders much more than I used to. I have occasionally wondered if they used six strokes, as in, two succeeding power strokes, to extract even more work from the combustion pressure before finally letting it escape, would they have more efficient engines? I know that recompressing the combustion gases to get ready for the second "power" stroke would consume some power, but would it NET more energy harvesting from each drop of gasoline than the single power stroke does now? What would it be like with over 400 crank degrees being under pressure, especially if you reactivated the spark plugs from near TDC of the second stroke all the way to near the BDC? Someone can try this with an engine management system and custom 1/3 speed camshafts instead of the usual 1/2 speed. Just having the spark plugs fire for all 180 degrees of first combustion stroke then again for close to 180 degrees for the second combustion stroke may allow harvesting a bit more of the energy. However, one would want more cylinders to yield the same number of initial power pulses relative to "compression" pulses on the crank for smoothness, yes?

I'm a big fan of the 4.8 (underdog) I'd like to build using all the best gm parts (used) inc supercharger! Have you done one of them builds?

I see you run the fuel rails one in and one out and just loop the front. Lots of people say that is a no no. Is there a way to test if running dual inlets to the back then both into the regulator is actually better than the way you have?

Calling people out on their crap, I love it lol

The only good thing about the HIV-19 is I found this channel!!!