HI HOW FAST WILL ME ZZ454 IN MY 75 CAMARO DOWN THE STRIP 535HP 3000 STALL 3.42 REAR THANKS

What did you do to pick up 95 HP over the stock ZZ454??

Yeah, GM rates them at 440HP- 15 more than the standard 454HO it's based on, owing to the better flowing aluminum heads they put on them.

I'd have to beleive that would be at least a mid 12 second ride with any kind of traction and in reasonably good tune.

I think some pictures are in order... I want to see this ZZ454 before I start giving opinions on times...

Also, what gears are you running? And what kind of meats do you have on your ride?

Ask and you shall recieve:

http://www.sdpc2000.com/catalog/120/products/156333/ZZ454-440-440-Horsepower-454-Engine-with-Aluminum-Heads.htm

BTW- GM rates their crate engines the way they rate their production engines- to SAE standards. That means they're usually a smidge conservative vs. how the aftermarket usually rates them. It wouldn't surprise me if that engine pulled more like 460-470 on the local machine shop's dyno.

HI YES DAMON IS RIGHT THE GM CRATE MOTORS
ARE UNDERATED IN THE HORSEPOWER FIGURES THEY GIVE OUT
THEY RATE THEM AT 440HP IF YOU CET HOT ROD MAG EVERY MONTH THEY HAVE BEEN RUNNING A ARTICLE CALLED EVERY TRICK IN THE BOOK
THEY TOOK A ZZ454 PUT COMP CAMS XR282HR BEHIVE VALVE SPRINGS COMP ROCKERS AIRGAP MANIFOLD 850 CARB AND MADE 535HP-560FTLBS
MY 75 CAMARO HAS 3.42 10 BOLT TH400 3000 STALL WAS HOPEING TWO GET INTO THE 11SEC RANGE WITH A 150 SHOT OFF NOS
WILL USE DRAG RADIALS
HEY THANKS FOR THE INFO I LIVE IN A LITTLE PLACE CALLED NEW ZEALAND NOT ALOT OFF CAMAROS HERE WE LOVE EM AMERICAN CARS

I think you stand a modest chance of hitting 11s just on the stock crate engine just as it comes from GM if you can get a good launch. With the upgrades that you mentioned (cam, springs, intake, etc.) I think you're there for sure. With nitrous (even on the stock motor) it's an absolute no-brainer.

I have heard. (just heard) that the 454 and the 502 motors are not worth the $$

Hey Victor,

How about getting rid of the upper-case. It is somewhat irritating to read.

Thanks,

Jim

------------------
1975 Camaro
1972 Camaro (Son's car)
1973 Trans Am 455, 4-spd
1971 Firebird

I have heard. (just heard) that the 454 and the 502 motors are not worth the $$

My neibor has a 502/502 513's 3,000 stall Full weight street car on slicks ran 1.67-7.51 eigth mile, But i've heard the cam holds them back?

BTW its a 70 Z28

The 454 HO and ZZ-454 use a smallish 211/230* hyd. roller with a VERY large duration split between intake and exhaust.

The 502HP ZZ-502 uses an only slightly larger 224/234* hyd. roller cam.

Like most factory rate engines, the cams are not super wild for many reasons, including the extensive longevity testing the motors must pass. Yes, you could probably add a fir bit of HP if you shoved in a roller with more duration and lift.