Motor swap
Thread Starter
Navigator
Joined: Jun 2008
Posts: 9
Likes: 0
Motor swap
Looking to build a new motor for my 79,want to stay with a SBC,and would like to get about 550hp - 600hp. can you get there with Vortec stuff? i don't much like the vortec stuff but it is cheaper.
Or should i just buy an early block and get some good alum heads like AFR or something like that?
Thanks for any advise.
Jesse.
Or should i just buy an early block and get some good alum heads like AFR or something like that?
Thanks for any advise.
Jesse.
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Looking to build a new motor for my 79,want to stay with a SBC,and would like to get about 550hp - 600hp. can you get there with Vortec stuff? i don't much like the vortec stuff but it is cheaper.
Or should i just buy an early block and get some good alum heads like AFR or something like that?
Thanks for any advise.
Jesse.
Or should i just buy an early block and get some good alum heads like AFR or something like that?
Thanks for any advise.
Jesse.
I would suggest you lower the HP goals, plan for a big block, or prepare to have a LOT of cash for a small block that powerful. You'll need all forged rotating assembly, large cubes, high revving, fully balanced, and high compression. You won't get that goal with Vortec stuff...in fact you'll spend some coin for after market stuff.
Thread Starter
Navigator
Joined: Jun 2008
Posts: 9
Likes: 0
I would suggest you lower the HP goals, plan for a big block, or prepare to have a LOT of cash for a small block that powerful. You'll need all forged rotating assembly, large cubes, high revving, fully balanced, and high compression. You won't get that goal with Vortec stuff...in fact you'll spend some coin for after market stuff.
Instructor
Joined: Jul 2002
Posts: 105
Likes: 0
From: spring hill fl
550 Hp?
It can be done. It's going to cost you, big time and be a bear to drive on the street.
Contact a cam grinder or two and ask them what they can do for you.
They all have run tests on all combs. They know what will work best.
It can be done with stock iron heads. They do need work and that cost big. Every thing forged and a touch of chuckle gas.
Best results?
Get a big block and do it mild. Much easier to drive and will cost 1/2 the price. A 427 cid- 390 hp, give it 250 shot of NOX.
You'll have to change the front springs and shocks, beef up the rear also. Be prepared for a WOW factor
Contact a cam grinder or two and ask them what they can do for you.
They all have run tests on all combs. They know what will work best.
It can be done with stock iron heads. They do need work and that cost big. Every thing forged and a touch of chuckle gas.
Best results?
Get a big block and do it mild. Much easier to drive and will cost 1/2 the price. A 427 cid- 390 hp, give it 250 shot of NOX.
You'll have to change the front springs and shocks, beef up the rear also. Be prepared for a WOW factor
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
The problem with Vortec heads when you get into that much HP is the heads need to be modified so heavily that you're better off buying after market heads, maybe originally of Vortec design, but ready to go out of box for the kind of air flow you need for that kind of power.
Le Mans Master
Joined: Jan 2006
Posts: 6,506
Likes: 139
From: Butler Pa
You're willing to spend big bucks to build a 427 or 454 small block, but you want to skimp on the heads and intake. I don't understand...
Burning Brakes
Joined: Feb 2006
Posts: 1,173
Likes: 5
From: Paducah Ky
To be street friendly cubic inches and airflow will be the key. while you may get those numbers from a 383 it would be a much more driveable setup to go with a 427 or 434 and use some good aftermarket heads. You can probably buy large runner Dart heads for less than the machine work required to get the iron heads flowing. AFR's would be even better but cost a little more.
Drifting
Joined: Oct 2004
Posts: 1,496
Likes: 1
From: Lafayette Louisiana
Do yourself a favor and follow this thread. You wont go wrong with anything Lars puts together and this particular build meets your goals. http://forums.corvetteforum.com/show....php?t=2055968
He even has nice pics to go along with it.
He even has nice pics to go along with it.
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Thread Starter
Navigator
Joined: Jun 2008
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