Chev Big Blocks

[VAN454]

Okay, I thought it would be good to get a thread going for the mighty Chev Big Blocks. Anyone out there who has one please post your specs, and if anyone has any questions about them or fitting them to an HQ-HZ then post that too and I will try to answer what I can. I do have a good collection of books on the subject, plus I drive my 454 everyday.

OK, my engine specs are,
454(7.4L)
mild cam
roller rockers
dual plane med-rise manifold
tri-y pacemakers
straight gas- twin impco 425 mixers and twin B2 converters
HEI with MSD module and coil
'headbang'

[Daryn]

My knowledge of chev motors is pretty limited unless we're talking about the LS1. So is the 454 motor released as that or has that been stroked?

[VAN454]

It is a factory engine yeah. They are basicly a stroked 427 from the factory.

[wabbit]

why would they do that?

wouldn't that give them less race power?

[VAN454]

why would they do that?

wouldn't that give them less race power?

HAHAHAHAHAHAHA!!!!! Well yeah, but it would give them more pulling power and more HP, just less race powerbiglol

[azzahstylez]

Arnt 454 truck engines ??

[VAN454]

Not really, no. The Big Block Chevs were designed as a performance engine first, for NASCAR, then they did truck versions. Mine is originally from a 1970 Impala. They were also available in Corvettes and Camaros and Chevelles. Google the SS 454 Chevelle and have a look at one of the alltime classic muscle cars.

[CHEVY_torana]

a mate of mine has a 30 grand 502 big block chev on nitrous in a camaro runs 10s str8 and high 9s with nitrous was bought as a crate motor from rocket (top of line engine from rocket) and was gutted and preped up with race gear pumps out 800hp

[VAN454]

What gear does he have left over?

[v8tfcorty]

yep big blocks are the way to go we running 2 ...
454 with a 14/71 and a 510 with a 16/71
what sorta spares were ya after van we got some lying round

[CHEVY_torana]

nah my mate did this project a few years ago and sold his parts all off around the same time

[VAN454]

yep big blocks are the way to go we running 2 ...
454 with a 14/71 and a 510 with a 16/71
what sorta spares were ya after van we got some lying round

What do ya have? I want to put a bigger cam in it. A single plane manifold. Maybe a tunnel ram if I can get one at the right price. Dunno, anything to make it more powerful LOL!'headbang'

[REV308]

I have LS7, its about to go into my torana drag car.

454+ 30 thou
scat crank, eagle rods
JE pistons, 12.5.1 comp.
crane roller cam.
ported LS7 heads
comp cams rockers, stud girdle.
edelbrock super victor intake.
1050 holley
msd billet dissy

642 hp on engine dyno on avgas, will run on methanol now.

[CK_318]

i agree VAN454, the SS Chevelle is the thoghest chevy in my opinion, the first time i saw one i was about 7 and said to my self i want one (doing the Homer Simpson as i thought it).Also one of my brothers mates here in Port has a HQ 350 GTS monaro with a 572 big block (crate motor) stoked to a 595 with dual 1000 cfm Demon carbies on a tunnel ram, when she starts up she shakes shakes the ground, imitating an earthquake & deafens you for a few minutes. i recently heard that he had to sell his 350 powered 70's land cruiser to put in a new tranny, bcoz it got shatteredwhen out for a thrashing of the bitumen.

[hx sandman]

we have
67 corvette - 427 tripple carb big block
all standard restored ground up car

and
74 corvette with a 454 4 bolt stroked out to 460 with race cam has added on
runs about 420 rwhp
no feeling like it