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stevens03 07-20-2012 08:18 AM

383 Advise
 
Hi everyone , im new to the forum and have a couple questions regarding a 383.
I want to have a 383 built for my corvette. I want to have 400hp. I also want to avoid such a lumpy lope at idle for more of the typical corvette sound.
What do you suggest parts wise to build this engine.
my budget is 4,000.00 i have no core

This engine will be all street. Thanks in advance for the advise.
Heads?
Crank?
Cam?
Pistons? etc.

zildjian4life218 07-20-2012 08:25 AM

I think a 383 with a set of GMPP vortec or RHS vortec heads would be a sweet little street machine. Should make gobs of torque and definitely hit your 400hp goal. Shoot for 9.5-9.8:1 and you will have no problems with pump gas. What is the drivetrain in it? stick? auto? converter stall? rear gear?

stevens03 07-20-2012 08:32 AM

My transmission is a 4 speed muncie
gears are 307 i believe maybe 373

I want this engine to resemble my old 63 327
i will be using exhaust manifolds, i will get a intake with a oil fill tube, air cleaner, etc.
Would i have any problems with vortec heads, what other heads if i dont use Vortec?
Aluminum heads? Can you paint these to match block? Does it hold? Thanks

zildjian4life218 07-20-2012 08:35 AM

Quote:

Originally Posted by stevens03 (Post 1575434)
My transmission is a 4 speed muncie
gears are 307 i believe maybe 373

I want this engine to resemble my old 63 327
i will be using exhaust manifolds, i will get a intake with a oil fill tube, air cleaner, etc.
Would i have any problems with vortec heads, what other heads if i dont use Vortec?
Aluminum heads? Can you paint these to match block? Does it hold? Thanks

if your talking about the factory intake then no it won't bolt up to the vortec heads. You will have to look into something else. Are you using the factory ram horn manifolds?

ap72 07-20-2012 08:38 AM

Quote:

Originally Posted by stevens03 (Post 1575428)
Hi everyone , im new to the forum and have a couple questions regarding a 383.
I want to have a 383 built for my corvette. I want to have 400hp. I also want to avoid such a lumpy lope at idle for more of the typical corvette sound.
What do you suggest parts wise to build this engine.
my budget is 4,000.00 i have no core

This engine will be all street. Thanks in advance for the advise.
Heads?
Crank?
Cam?
Pistons? etc.

why 383? You can do an LS swap with a cam upgrade for less than your budget and end up with more power, better mileage, and less maintenance...

Nothing wrong with a 383, but there are a lot better options out there if you're just wanting good torque and power.

stevens03 07-20-2012 08:39 AM

Quote:

Originally Posted by zildjian4life218 (Post 1575435)
if your talking about the factory intake then no it won't bolt up to the vortec heads. You will have to look into something else. Are you using the factory ram horn manifolds?


I am going to use my ram horn manifolds for sure.

zildjian4life218 07-20-2012 08:50 AM

Quote:

Originally Posted by ap72 (Post 1575436)
why 383? You can do an LS swap with a cam upgrade for less than your budget and end up with more power, better mileage, and less maintenance...

Nothing wrong with a 383, but there are a lot better options out there if you're just wanting good torque and power.

I guess he wants it to be more period correct or resemble a certain period

ap72 07-20-2012 09:16 AM

Quote:

Originally Posted by stevens03 (Post 1575434)
My transmission is a 4 speed muncie
gears are 307 i believe maybe 373

I want this engine to resemble my old 63 327
i will be using exhaust manifolds, i will get a intake with a oil fill tube, air cleaner, etc.
Would i have any problems with vortec heads, what other heads if i dont use Vortec?
Aluminum heads? Can you paint these to match block? Does it hold? Thanks

400hp with those manifolds will be damn hard to do. You need a set of non-vortec heads, your choices comes down largely to budget. There's a lot of good offshore 200-210 castings that will work fine and be cheaper, then there's some good Brodix, AFR, Dart, Profiler, etc stuff that works well but costs more. Your head selection will NOT be the limiting factor, those exhaust manifolds will be. Since you're basically cutting your leg off before the race I'd just go with a good mild build. You will need a custom cam if you want that engine to be worth anything as those manifolds will change your needs from what s normally seen.

FWIW, exhaust manifolds are usually the FIRST thing to get rid of, and they are used as a RESTRICTION in many budget classes of racing.

stevens03 07-20-2012 11:59 AM

would I be correct in saying that to reach 400 hp, it would be easier to get their from a 383 rather than a 327 or 350?

ap72 07-20-2012 01:05 PM

Quote:

Originally Posted by stevens03 (Post 1575475)
would I be correct in saying that to reach 400 hp, it would be easier to get their from a 383 rather than a 327 or 350?


Yea, it will be easier with more displacement. But those manifolds are going to make your power curve hit a brick wall. Build for a low rpm power peak. Performer manifold, AFR 180 heads, and a really good roller cam from a cam grinder that can work magic. all the "little things" will count sice your placing such a handicap on yourself.

stevens03 07-20-2012 01:29 PM

Im in Los Angeles. Any good engine builders that you guys think would be good for this project. Im looking at a couple guys. But could always use a recommend.
Thanks for all the help.

stevens03 07-20-2012 01:32 PM

Will paint hold on aluminum heads? I want to paint them to match the block?

stevens03 07-20-2012 01:58 PM

Quote:

Originally Posted by ap72 (Post 1575493)
Yea, it will be easier with more displacement. But those manifolds are going to make your power curve hit a brick wall. Build for a low rpm power peak. Performer manifold, AFR 180 heads, and a really good roller cam from a cam grinder that can work magic. all the "little things" will count sice your placing such a handicap on yourself.

What size roller cam would be good for this?
Flat top or dome pistons recommended?

stevens03 07-20-2012 03:20 PM

great info. thanks!

ap72 07-20-2012 03:37 PM

I don't think Joe will build you an engine for 4 grand, not one with all new parts and a solid roller cam.


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