GM. 454 HO. (ZZ502 Cam.) AFR 265 Heads

Рет қаралды 3,126

Күн бұрын

Sharing a surprising combination,
454 ho short block
9.3 to 1 cr.
zz502/427ci cam
AFR 265 CNC Ported
Edl. RPM air gap
770 brawler carburetor
1inch open spacer
SORRY, I forgot to mention it is 454ci

Пікірлер: 96

@Scubasteve22 22 күн бұрын

That's pretty dang good nick for no bigger than that cam is.. Those AFR's are solid! Thanks

@josephmclaughlin9787 3 ай бұрын

You putting together good combo very simple and realistic keep up the good work

@lionelwells5618 27 күн бұрын

Great job. That would make a nice street monster!!!.

@dzperformance7360 27 күн бұрын

@@lionelwells5618 thanks for watching

@hankclingingsmith8707 5 ай бұрын

ANOTHER GREAT STREET COMBO

@dzperformance7360 5 ай бұрын

thanks for watching

@DavidB7474 5 ай бұрын

Can’t wait to see what the 781 heads make. I’ve seen some ported peanut port heads make 500hp. But with today’s heads it’s an easy just to upgrade to a set of aftermarket heads. Cause no one is selling used parts for cheap anymore.

@dzperformance7360 5 ай бұрын

Thanks for watching,, it'll be a 4 or 5 weeks till I test the 781's

@aaronanderson6892 5 ай бұрын

I would love to see a test with the factory vortec heads. I think 279 is the casting number. 100cc combustion chamber. Im building the exact same setup, only im using the factory flat top pistons, they are down in the hole .024", and im using a .022" head gasket

@Cajun4x403 5 ай бұрын

I would love to see this as well. I’m purchasing a L29 vortec based 496 stroker with the stock heads on it.

@MrsSunshine75 5 ай бұрын

That’s gonna be very interesting to see what the numbers will be with the 781’s!

@dzperformance7360 5 ай бұрын

In my opinion I don't think they'll hurt the tq. that much, And maybe Negative 30 horsepower

@warrenpemberton-ww9fq 5 ай бұрын

Thank you for giving me some good ideas that would work perfect in my Impala

@dzperformance7360 5 ай бұрын

I didn't mention in the video, but I'm betting. It would run just fine on 87 octane, It was tested with 91 pump gas

@DavidB7474 5 ай бұрын

Image running a high performance engines running on 87 octane.!!

@jameshatfield3529 5 ай бұрын

Thank you for posting this! I have almost exact combo going together right now. ZZ454 short block, AFR 265’s, 230/236 .550/.550 113LSA. Vic Jr EFI. And 4150 throttle body. Going to make an exceptional street combo for a 91 454SS Thanks for sharing your combos and results!

@dzperformance7360 5 ай бұрын

Thanks for your input

@xozindustries7451 5 ай бұрын

That’s a good combination, I am building a similar motor, Gen 6 502 with a Lunati cam with a ,544 lift, 290 heads, and Holley EFI single plane intake with terminator EFI using a Chevrolet performance timing cover for crank and cam trigger, L21 valve covers with LS style coils

@dzperformance7360 5 ай бұрын

casting #290 heads?

@xozindustries7451 5 ай бұрын

@@dzperformance7360 Flo Tec 290cc oval port aluminum heads, I found out after I bought them that they are AFR knockoffs, I bought them because they fit my combination

@bluecollarhotrods9781 4 ай бұрын

Interesting results. I'm sure that you are aware of the 454 GM used to offer with that cam and "GM" aluminum heads (edelbrock) It was 469 HP with 9.6:1 CR I put together an engine for my folks 72 El Camino consisting of: ATK .040" over Gen V 454, Lunati retro fit hyd roller lifters, AFR 265s @ 106cc - fully CNC ported, THe ZZ502 H.O. cam, Edelbrock Torker II, Holley Sniper EFI. I told them that it likely won't be much more than 500HP at the crank. I measured everything and got 10.4:1 SCR for their engine. Not going to lie - this gives me hope that it might be closer to 540-550 HP. Waiting on a few small parts, then it will be time to fire it up and start tuning.

@dzperformance7360 4 ай бұрын

I don't think that's correct.They never use that cam in 454,, That z z 454 you're talking about,, They have the little cam in it, I could be wrong and I am occasionally wrong but research it.And I think you'll see what i'm talking about.

@bluecollarhotrods9781 4 ай бұрын

@@dzperformance7360 just looked it up, has the smaller 211/230 @.050 cam. Not sure why I thought it had the ZZ 502 H.O. cam. 🤷‍♂️ Oh well, makes me feel better about what I put together making 500+

@dzperformance7360 4 ай бұрын

I got a theory,, I think that the 454 cubic inch reacts really well to that cam , and GM didn't know how they were going to sell the 502.When the 454 probably would produce within 10 horses of the 502 hp and Tq

@ekitching 2 ай бұрын

Those are really good numbers! Of couse those afr heads are not cheap. The next step would be to zero deck the block and get a slightly larger cam with around 230 deg duration and .600 lift. That will bring you in the 600 to 625 hp range. Let us know what happens with the factory heads.

@dzperformance7360 2 ай бұрын

I'd release the video on it.If you look on my channel you'll see it

@tomcumbey9029 5 ай бұрын

Those little AFR 265 heads seem to do pretty good.

@dzperformance7360 5 ай бұрын

They're expensive heads but they are good

@andy347495 5 ай бұрын

this is great. I always like seeing what the AFR 265's do. they are great heads for a 454. seeing how 781's compare to the 265's is something I've wanted to see also. do your 781's have the factory valves or larger ones? comparing your 265 afr test to Richard's gen 6 454 test the afr 265's had a 1000 rpm gain of where peak power was made at. I know its not an apples to apples test, but it is pretty close to the same duration, so its at least an idea of what they gain over the vortec heads. looking forward to the 781 test. are you gonna be doing any dyno testing with ported peanut port heads?

@dzperformance7360 5 ай бұрын

The valves are factory size,2.07/1.72. But they're good quality manly.

@dzperformance7360 5 ай бұрын

Funny you ask about peanut ports I got a well ported set with big values that i'm going to be testing soon,, If you watch eric winegunner's channel , he did a flow test on them and reviewed my port work.

@leonardfoster6252 5 ай бұрын

Good hp for the compression buddy!

@dzperformance7360 5 ай бұрын

Thanks!!

@joshuashuck3994 5 ай бұрын

What an awesome build! Love it when someone is trying to inform folks and not market for a company. Are the 781s worked on?

@dzperformance7360 5 ай бұрын

Manly valves and a minor pocket port

@dzperformance7360 5 ай бұрын

This may be a bad time to mention this but I got my own custom carburetor spaces.

@dzperformance7360 5 ай бұрын

I have, i've used #088 heads several times,, The large intake ports you must have cubic inches or compression or both . I like your 11 to 1cr,, rpm air gap, Medium size roller and you probably on your way to 550 to 590 horsepower

@lamarw9901 5 ай бұрын

Impressive. I made a comment a while back about an 87 octane test for a street car. The compression could be low enough that a little less timing this motor could still be a very fun street motor, and I could run 87 ethanol free. I would think the newer chamber would be more detonation resistant than an old casting.

@dzperformance7360 5 ай бұрын

What I was so cranked up about This combination,, is There's no waiting at the machine shop. Just mail order good quality parts and made some serious street horsepower

@dzperformance7360 5 ай бұрын

Thanks for watching thanks for putting in some good comments

@lamarw9901 5 ай бұрын

-@@dzperformance7360 The phrasing of making a comment a while back could come across as being a PITA but intent was that I follow and I can't remember screenames on these comments sections, like the old forum days. I found your feed a while ago searching for 434 strokers. I like what you are doing with more budget stuff. 496s and 540s are cool but really for those of us on a budget that want to have a fun stick shift street tire car that sees the track once or twice a year, it is over powered and possibly over budget. An iron head 496 maybe built cheeper, but an aluminum head 454 with some RPM more fun. As someone that has built heads and cam LT1s(of the 90s variety)/LS1s this is a doable combo which I have had interest in. Heads and cam are a big part in making power and as someone that like handling less weight of the aluminum heads is a perk. So you're building the kind of stuff I like. Just a few ideas from stuff kicking around in my head. I've had issues with 93 pump carb stuff after sitting, my 87 ethanol free burning 250 6 banger has been great once I made the switch for ethanol free.

@carlpreston1680 5 ай бұрын

The 454 HO version with the same cam and cast iron 118 cc heads has 8.75 to 1 compression and still makes 438 horsepower according to GM you should be able to run that on 87

@6426yy 5 ай бұрын

Awesome build, I intend to use the same cam and lifters on a future 468 with peanut port heads. Did you set last at about .006"? I'm surprised the factory springs supported that RPM.

@dzperformance7360 5 ай бұрын

Lash was set at .004 cold, The springs on the AFR.265 heads was pretty good compared to most of the off the shelf bbc Aluminum aftermarket heads springs, They came equipped with.

@dzperformance7360 5 ай бұрын

Let me know what happens on that 468 I bet that package works good

@FORCFED 5 ай бұрын

You build a lot of BBC, what's the best timing chain assembly you use? Great videos sir

@dzperformance7360 4 ай бұрын

Sorry I didn't find your questions till just now,, I like Cloye's,, Just telling you a story,, I recently used a cheap timing chain that broke and bent a bunch of valves,, I also had one of those pro Comps. That was six degrees off of what it was labeled on the sprocket,, Point of the story, don't try to save money there.

@dzperformance7360 4 ай бұрын

Also thank you so much for the compliment thank you for watching

@FORCFED 4 ай бұрын

@@dzperformance7360 thanks again sir

@dkp7895 4 ай бұрын

Maybe I missed it but what was the combustion chamber size? I see two of them for the AFR265, 112cc and 109cc

@dzperformance7360 4 ай бұрын

112 cnc, ported by afr.

@pockets5628 5 ай бұрын

You should try that combo with just a cam swap. Get a Clay Smith 160-3103, which is designed for the AFR heads. Or the 160-3196.

@pockets5628 5 ай бұрын

If you look at the valve events, the clay smith that’s closest to the zz502 cam is vastly different. There would be a substantial power increase.

@RobS.-pq9vm 2 ай бұрын

Nick. I have a virtually identical motor with the exception of a Lunati 60211 style cam and roller hydraulic lifters. .575/.575 lift, advertised duration 272/280, 221/229@.050. running on 87 pump gas. Can you make any timing recommendations. Trying to fill in the Holley spark table but with side pipes it's hard to hear any detonation. Many thanks.

@dzperformance7360 2 ай бұрын

No experience with that sorry,, I'm a Holly carburetor type guy

@RobS.-pq9vm 2 ай бұрын

Total timing should be close minus a few points for 87 octane vs 91-92. Maybe 10 deg vac advance at idle and a bit more at cruising. Just wasn't sure how much total timing for 87? Can probably figure rest from there there.

@gmcnelly2468 5 ай бұрын

Nick, any videos of this engine idling/running? Thanks for the good work!

@dzperformance7360 5 ай бұрын

No not yet, But I'm installing the 781 heads and putting it on the engine. Start up stand tomorrow maybe tomorrow night. I'll Post a engine run stand video.

@aaronanderson6892 5 ай бұрын

@@dzperformance7360that 502 chop sounds so good at idle

@gmcnelly2468 5 ай бұрын

Thanks - looking forward to the video.@@dzperformance7360

@larrythompson7802 5 ай бұрын

I've always wondered if this would be a good combo with a blower. I assume forged pistons sre in that shortblock.

@dzperformance7360 5 ай бұрын

yes

@454ho 5 ай бұрын

Hey Nick, ever done a back to back test with hyd and solid roller lifters on a BBC same camshaft.

@dzperformance7360 5 ай бұрын

No,, But I have built Almost identical engines and used hydraulic once and solid next time, I believe on a big block chevy street motor it's about + 5 hp.( It's not a huge difference in power. It's just what I happen to have on the shelf. At the time the motor goes together)

@rogerbritt1964 5 ай бұрын

Are u sure mark 4 781s will seal the water jackets outerside on decks on mark 6 block?

@dzperformance7360 5 ай бұрын

yes,

@dzperformance7360 5 ай бұрын

My experience is they will not fit on a gyn.5, but gyn 6 They will, but you always have to check. The coolant passage just to be sure

@leonardfoster6252 5 ай бұрын

Did you say you run solid roller lifters on a hydraulic cam?

@dzperformance7360 5 ай бұрын

Yes ,on this test I did

@luisbarrientos5411 5 ай бұрын

Good afternoon, friend, have you worked with the 088 325cc iron cylinder head in intake? Will it be a good cylinder head for a 468cid with 11.1 compression ratio?

@musclebone7875 5 ай бұрын

088 heads are good heads. I have them on my 496 bbc. Camshaft selection will be important for you.

@luisbarrientos5411 5 ай бұрын

@@musclebone7875 I am going to use a flat mechanical cam..263 - .273 at 0.50 and a lift of .623 - .650

@dzperformance7360 5 ай бұрын

Flat tappet cams are dangerous these days. They make thim out of plastic or pot metal or something like that, I I've had so many go flat. I'm worried about you using that cam.

@dzperformance7360 5 ай бұрын

And when your cam goes flat and you call the cam manufacturer. They said you didn't use the special special breaking sauce or the lightweight break in springs,, But how come 20 years ago we did none of that c***, we just Turn the idle up just a little bit for the first day and they never went bad

@luisbarrientos5411 5 ай бұрын

@@dzperformance7360But in other words, let's assume that nothing happens with the material. Do you think that combination of the cam with the cylinder heads is good? The cylinder heads have smooth work on the ducts and a 3-angle seat. Will I be able to reach 550hp?