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Old 02-18-2012, 09:28 PM   #1
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Default heads for a 383 turbo motor?

hey guys im kinda new to the v8 world and am just lost in it all.

so the project im working on is a ctsv with a stock 115k ls6. i picked up a forged bored/stroked iron 5.3 (now a 383). the short block i got is as bare as can be. ithe car is going to have twin pt 5858s. and am shooting for around 800rwhp ish. the dilemma im haveing is should i pull the stock 115k ls6 apart and use everything but the short block on my new motor or buy new heads and cam for the new motor?
the new block is going to be 10.5-1 with 64cc heads. but id like to get it down around 9.0 to 9.5-1 for it to be a turbo motor.

what heads if any should i buy? prc ls6 stage 1?
what cam for a boost motor?
lsa?
im just vary lost on all this v8 stuff and ill like to not buy things twice.
thanks for helping a noob out.

-alex
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Old 02-19-2012, 11:29 AM   #2
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noob needs help.
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Old 02-19-2012, 07:39 PM   #3
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Stock casting 317 heads flow pretty much the same thing as LS6's but have a bigger combustion chamber (71cc). Quite a few people have made good power with them.

Cam depends on where u want the power band.

O'....

Tell Spiker to sale that rice rocket and build something with a V8.
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Old 02-20-2012, 09:38 AM   #4
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U know a good place to get a packge deal on ported 317s and cam?

As for the cam i am super lost
What do these turbo v8s like?
What lsa should i be looking for?
Im only trying to make 800ish rwhp with the best street drivability.

And spiker is to slow to own a v8
-alex
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Old 02-20-2012, 10:44 PM   #5
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Interesting, so a 5.3 can take a 4" stroke crank and be bored to take 5.7 pistons ?

Would this give a better combo for big boost than an alloy based 383 ?
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Old 02-21-2012, 07:42 AM   #6
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The iron blocks flex less under high load, so the short answer is yes.

Still need more input on a good cam
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Old 02-21-2012, 08:50 AM   #7
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Texas speed has a head cam package!
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Old 02-21-2012, 08:11 PM   #8
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Quote:
Originally Posted by runsfromdacops View Post
The iron blocks flex less under high load, so the short answer is yes.

Still need more input on a good cam
Contact Ed curtis or Patrick G.

I sent u a PM.
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Old 02-23-2012, 02:35 AM   #9
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Quote:
Originally Posted by runsfromdacops View Post
The iron blocks flex less under high load, so the short answer is yes.

Still need more input on a good cam
is there still plenty of cylinder wall thickness when bored to 5.7 for big boost.

Spotted a cast 5.3 locally and would consider fitting my 383 rotating assembly
if it would handle 18-20 psi boost better than an ls1 block.
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Old 02-23-2012, 04:01 AM   #10
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Quote:
Originally Posted by Johnv View Post
is there still plenty of cylinder wall thickness when bored to 5.7 for big boost.
Get you the latest copy of Car Craft -LS Series Power. They did a 5.3L, 383 stroker, maxed out a BW 72mm at 21psi. Made nearly 1000HP and over 1000 TQ.
Also has some good tech info in it.

Click the image to open in full size.
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Old 02-23-2012, 11:22 AM   #11
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317 heads with a tu1 cam maybe?
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Old 02-23-2012, 11:45 AM   #12
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Brute Speed cam with AFR Heads

That's my setup.
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Old 02-23-2012, 12:12 PM   #13
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Quote:
Originally Posted by venom ws7 View Post
Brute Speed cam with AFR Heads

That's my setup.
Wow, saw you sig... great power with those 241 heads. Are they untouched or were they CNCd?
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Old 02-23-2012, 12:38 PM   #14
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Quote:
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Wow, saw you sig... great power with those 241 heads. Are they untouched or were they CNCd?


Untouched 241 heads only the dual springs kit..
I just hope the ported AFR 225 heads will gain 40+rwhp on the same boost level.
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Old 02-23-2012, 02:23 PM   #15
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Quote:
Originally Posted by foose04 View Post
Get you the latest copy of Car Craft -LS Series Power. They did a 5.3L, 383 stroker, maxed out a BW 72mm at 21psi. Made nearly 1000HP and over 1000 TQ.
Also has some good tech info in it.

Click the image to open in full size.
That book has allot of helpfull info. My plan is to go with the single making 946hp with the afr heads, still in the works but hoping for next year
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Old 02-23-2012, 03:28 PM   #16
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Thanks, looks like a great book, not available over here , have to see if I can get it online.
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Old 02-25-2012, 05:50 AM   #17
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Quote:
Originally Posted by runsfromdacops View Post
U know a good place to get a packge deal on ported 317s and cam?

As for the cam i am super lost
What do these turbo v8s like?
What lsa should i be looking for?
Im only trying to make 800ish rwhp with the best street drivability.

And spiker is to slow to own a v8
-alex

Says the guy whos shitbox that has a chute on it has YET to make more power or come around my piece of **** ;O)


Cute Jr Dragster chute though.
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Old 02-25-2012, 09:53 AM   #18
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Im thinking about stock 317s or the prc stage 1 317s
But the cam and lsa i have no idea about.
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Old 02-25-2012, 11:44 AM   #19
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Quote:
Originally Posted by BAD ASS K5 View Post
That book has allot of helpfull info. My plan is to go with the single making 946hp with the afr heads, still in the works but hoping for next year
Thats close to 1,000 at the Flywheel right?

Pretty good for a 72mm. I didn't think a 72mm could even get close to 1,000.

.
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Old 02-25-2012, 11:44 AM
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