I always appreciate your videos. If you want I been told that you can run solid roller lifters on a hydraulic roller cam at low lash . Might be a interesting test on engines that were spun up to a higher rpm . You probably already done that . May not be any different. I use to change my lash a bit on my 302 and see how it effects the torque curve. It did make a difference

I wish you would dyno one of Chevy ZZ427 crate engines . Chevy says its a modern version of the old second gen L-88 they sold as a crate engine back in the 70s and 80s. It’s rated at 480 but I’ve heard most hit 530 on a engine dyno. It actually comes with a HEI ignition, manifold and a pretty small Holly 770 cfm 4 barrel carb.

Hey Richard. The inspiration for my 540 twin 80mm turbo motor. Wilson did my manifold as well. 550lb injectors. Can't wait to share my hp numbers when it's done.

One cam to rule them all, one cam to find them, One cam to bring them all, and in the chopness bind them

Hey Richard I would like to see the tunnel ram bbc with turbo boost and 2 carbs FTW

Damn Richard it's like you know I'm building a big block and looking for ideas 💡

Would love to see a video on using such a large cam on a blown bbc that is a basic 454

hey Richard, would you be interested in testing full length exhausts? H pipes vs X pipes and everything unequal length and equal big and small it would do a lot to clear up exhaust myths and see how different types of exhaust effect the power curve i see alot of things online like "our catback produces an extra 20HP compared too stock" and that just seems like hog wash to me

It will also help to know how much advance is ground into the camshafts you are testing and do some cam testing with same duration & lift but ground with different advance 2, 4, 6 degrees of advance.

Damn. I would've liked to have seen a turbo setup on here. I'll bet with the right setup it would beat them both. Or at least considerally close the gap, low and high rpm.

My takeaway is this BBC would be a great daily driver engine. 8.9 compression sounds pump gas friendly. Or toss it in a '57 Chevy or '67 C-10 and drag race with some nitrous. Great video.

I’d like to see it run with a 10/71 or 12/71 it’s pretty big cubes and turning pretty hard, possibly running out of blower in the roots style

When you upgrade your cam, better exaust, more compression or boost, numratically higher differential gears, more t c stall needed. Best highway gears. 3.25 to 3.50 is good. 3.73 to 4.11 with od. Worse on gas 4.30 to 5.13.

A really good all around street cam would come in at about 2-2500 rpm max start. And about 278 to 286 degree duration. Old school. And work with 8.5 1 to 10.25 comp.

My thoughts, A 9 second car back in the day was rare back in the late 1980s. Everyone wanted 1000 hp, a 9 second car. We couldn't do more then about 600 on our best car. Pump gas was like 91 max. Twin turbos set to about 10 psi. And a 225 nos plate or manifold injected would yield about 700 to 800 on a 427. At the strip we had 1250 hp cars. And 8 second passes. 600 to 650 off the motors say 540 cid and a 600 burst of n o s. And they were street cars. 10.5.1 comp. 91 oct gas. 454, 496, 427 cid. We had diesal turbos that could make about 1000 hp in some rare cases. No one really ran alcohol on street cars back then or 112 oct fuel. We had aircraft fuel 100 oct. We had used mostly nos and 6 71 superchargers.

That was impressive hp gain . I know 2 dominators usually adds power over 1 but 60 hp was insane. Ive seen 40 to 45 b4

Very interested in these big block chevy videos now that I have swapped a junk yard 454 into my k1500. Thank you for the info, would love to hear some input on how to get 600hp on a budget!

These days it's pretty easy to make 1000 HP's. That motor would be a blast to drive and so reliable on pump gas. Dart block and such might be a couple dollars though. Good comparison

Big block guy here. If I went LS I'd probably have more money for tires right now.

If the first set up was on a 454, how much difference would there be? Just checking some options. You can't beat cubic inches for power.

I double checked with several stroker kit offerings ,and you are 9.25 with flat top Pistons with 120,CC head just as I knew was the case. While your doing u tube videos I'm actually matching and building them for a living so I new based on experience

Big cams are known to limit the powerband range. Some about 5400 to 8500 rpm.

Lots of cubic inches eats up what appears to be a big cam. Imagine that. Us mere mortals with old 396-402-454 engines probably couldn't get away with it being that big on low rpm low compression stuff without losing power idle-3500 where they live on the road

I've noticed that many cams have a very limited rpm range and the racing ones are worse. Most cams with more then 278 to 284 seem to lose torque on the dyno. Unless you have a top end racing motor with a 320 roller cam, 400 to 450 cfm heads 16.1 comp. I am somewhat of a cam expert. We had the best luck with a good old 274 to 278 at full duration cam. And it worked with lots of engine combos.

The first version would be a great street engine. 👍🏻

Do you have a recommendation on a cam upgrade for the Chevy Zz502 ? The heads has been ported and it has roller rockers. I don’t have any papers on the airflow of the heads. I have it in a 73 TransAm together with a Hughes TH400. I am now using a sniper EFI that supports up to 650hp. Inge

It's like SS2 version for the Big Block.

So a 300° duration @ 0.05" is perfect then for my small 2.0 liter turbocharged four cylinder, Yay! Talk about a magic cam!

The problem with certain or most t rams is filling the extra volumn, in the upper part of the t ram.

When in doubt start with a smaller cam then work your way up. Say 274, then 286, 302, 320.

Great power for the 5% that can afford the build, love your 496 builds

I need a good hydraulic roller cam for a stock bore 402 with 781 heads. I'm currently running a comp 265h cam but wanting one for better 1/8th mile track range.

I'd like to see that camshaft in a 468... can you make it happen

Lift issues can happen with to big a cam. Valves hitting the piston that is. Cams with more then 550 lift with flatops can be an issue.its safer to run a moderate spec cam all around. When in doubt, go smaller. For a stock engine I'd never go bigger then a 274 cam. Too big a cam can cause clearence issues, much more stall needed for the converter. Sluggish low end power. Radical idle, too high an idle, vacuum issues. Valvetrain binding. Piston clearencing needed. Cam lobes coming close to rod bolts. Cam lobe fitting in cam bore issues. Etc

Impressive that cam can ask for part#?

How would that work in a stock vortec 7.4 in a stock truck

What would you recommend for my 69 oldsmobile 442 with the 455 big block. Doing a stock rebuild, i am thinking about rolling cam. Any ideas? Thanks Dave

Thank you sir for all your great information! I see you have a valve relief on this motor and the fairly large cam, do you think the big cam would work (PVC) on a stock bottom end gen 6 bbc or would I need new pistons with reliefs?

Big block fan here!! This must be the comp cams 300 something cam. Edit to say, nope.

We had to jet duel carbs way down on say duel 850s. A d low rpm power will suffer.

One cam to rule them all!

Richard what do you mean as fat as a 4 -7 swap doesn't really add power? If I understand correctly the swap helps with crank torsional vibration and such. Do you mean its not significant in the cam to cam or you just haven't seen gains from such a thing? Does it change power in single plane vs dual plane intake?

What is the LC on that cam?

100hp from swapping from one tunnel ram to another?!?! Crazy!

Interesting

nice. so if you had more compression, id bet youd have to run less initial timing so it wouldn't act "lazy" but aint nothing lazy about that power it made!!

Bigger carbs orders work best on high rpm big cid engines and on forced apps usually.

But you have to agree that longer duration camshafts will sacrifice low end torque, and increasing compression is a way to gain some of that low end torque back. I think that is where this mindset stemmed from, that you "need" more compression for more cam. I agree, you don't NEED it, but it does help in a street application.

Wow 39 timing advance, my 565 9.5 to one only 34-35 , and i feel the engine a little lazy, maybe need more timing

David Vizard’s gotta be at home cursing and shaking his fist at the screen watching this

It made 833hp and 712 ftlbs, on a 8.9:1 compression 540 BBC.

Hello Richard! Is it possible that the blower belt runs on the wrong Side of the assisting pulley? If it where on the flat Side of the belt you have more Angle around the Drive. Greetings from Germany!

Hey Richard what octane fuel were these tests run with? If you said it i missed it so I do apologize if so.

The thing about cam manufacturers catalogs.... this cam needs bla.. 3.90+ gears. 9.5 compression. 2500 stall bla.... sure, might be a rough idle in a 366 big block, but very smooth in a 454. I have friends that are running a 292 cam in their 454 and gas good idle. Sure you can hear it but it's not all radical.

quick questions Rich, I have a half filled 496 BBC, AFR 335 enforcer heads, forged crank and rods, Holley EFI setup, I want to make 800hp on pump gas 93 N/A and then 1300hp on boost with a water to air intercooler and E85, If I use this magic cam or something similar..should I run 10.1 compression or 10.6? Will the 10.6 work with low boost pump 93? Thank you

Don't know if I missed something in the video, but what camshaft was it, who makes it etc. ??

I've got a 71 bbc "402" block. it's running the factory 8.5:1 compression. looking for a cam to give it a great big block sound. Flat tappet hydraulic cam. thinking of the crower 01294 cam. Thoughts? Any other options for a great sounding "big block" idle with decent performance? or is the compression to low?

I've seen 4000 plus stall tork converters and super high rpm powerband bracket cams and they suck on the street.

I'd have ran a budgeted 284 flat tappet streetable camshaft with solid rollers on a hydrolic cam.

I have the same motor,i want to put togather but it has the je dished pistons i think 8.5.1 compression with 119cc 320 proaction protopline head will it come close to this flat top you teststed or to low compression it was suppose to be with blower but i dont want to put a blower our should i go ahead and by new pistons

I have a 402 BB that came in a car I bought, according to the build sheet it has a comp cams 11-213-3, 292/244 duration, .550 lift with 1.7 ratio rockers, 110 LSA, HS 2001 roller rockers, don't know about the heads, it has 2 Edelbrock 500 CFM four barrels. It seems like it should have more power than it does, is the cam too big ? I have the timing at 36 degrees. Any ideas ? Thanks Jancojk

Back in the day it was hard to beat a 3.50 gear, a 278 degree cam at full dur. On acstock 8.5.1 motor. 3.73 to 4.11s were awful w o an o d unit. Awful on the highway even at 55. I had a 4x4 gmc with 44 tires and 4.88 gears, and the gears behaved like 3.25 gears in a car. B v

On his custom cam, Short powerband I bet guys.

Richard your killing me, don't have a budget for all that go fast goodies, what works for my 74 MarkIV big block ? Stock 454 ,need a good hydraulic lifter cam? Stock stroke and bore and piston . Thank you

A 4 7 cam swap can add about 10 hp

Good Grief.... I thought I missed the Magic Cam.....

I am hearing and reading many horror stories about flat tappet cams getting wiped out during break in. Was wondering if this is something you or your viewers are seeing these days. Seems like comp cams gets mentioned a lot. I've always been under the impression that they made really good stuff, but folks are posting that their quality is not what it used to be. I haven built an engine in 20 years, but I had good luck with them back in those days. I know you run mostly roller cams, but I wondered if you'd seen this trend lately.

Richard, I love the videos sir, but I don’t know anyone that runs nitrous for only 800 rpm’s and can say that’s a good nitrous cam!!! Come on, run it from 3000 to 7000 and let’s see what it makes. We use nitrous for 4-13 seconds at a time (depending on your car and track).

Anything needing more then 2800 stall would be a bit radical.

Low fuel press or lean up top

Dude!!!!!!!!

I think the compression is 9.4:1 not 8.5:1 A.090 bump on a 454 will get you 8.7:1. 119 CC heads ,flat top 8:2

You can advance or retard a cam with about a 400 to 800 rpm difference by advancing or retarding it 2 to 4 degrees.

How efficient would this be under 10:1

Big racing cams have limited rpm ranges.

I would be happy with no boost

Hey Darrel what cam is this?

That cam in the pic is damaged by the roller

I like my power to be in 1/8 mile .

The best cam.....hmmmmm. 274 to 278 xe full duration. Awsome street made power. 2000 to 6200 is a realistic combo you will be happy with.

That's a big cam rich is talking about. Good for racing not street. 742 lift is a big cam.

That engine is sitting on the dyno and not in a car, so who knows it's characteristics.

If 1 cam was so great then why do the cam companies make all those grinds??? Bv

It's 540 cubic inches

I like your comparisons but to put to small a cam is a waste of time

The common knowledge says the cam should be selected to work with the compression...looks like this isnt correct...maybe you can elaborate on this more in a video if you havent already.

Slow the heck down! Damn!

Imagine trying to drive a cam on the street that starts making power at 3500 plus rpm. Not to fun.

N/A this engine should have made another 100 Ft. Lbs of torque Lobe centers should have been down 106 lobe centers more torque lower RPM

Personally I blame squirrels

you are wasting your exhaust energy. try a turbo setup. most efficient way.

Personally I blame the rats…Rat motors that is!

Rich! Why Trick Flow Heads?!