Exira

iTrader: (1)

6.0 bored .030
.5 cc valve reliefs
823 Heads Scoggin Dickey CNC'd
Milled .030
stock ls3 gasket? looking for the 10.8-11 compression?
234 250 .630 .605 113 +3
Eddy vic jr
HAVE NOT CHOSE CARB, whatre some options? 850 enough?

Im thinking of dropping the motor in an 85 cutlass i currently have a 406 in, turbo 350 ford 9" and 4.10s about a 3200lb car

I got recommended the cam so im going to try it

What do you think?

A.R. Shale Targa

iTrader: (2)

AED 750 sportsman I've used these on dozens of applications. They just work!!! Also I wouldn't put the larger CNC square ports on. Get some stock LS3 heads and have AI do their valve job and exhaust work to them. It balances the heads out E/I flow ratio

ragtopz28

iTrader: (57)

X2 ^^ I ran that carb on my old drag car and it was faster and more consistent than the Demon 850 that was on it.

slogo

Exira, there is a carb section you might get a little more feedback on.

https://ls1tech.com/forums/carbureted-lsx-forum-172/

JimmyGTO

Would you have AI port the heads or just valve job and exhaust work? If porting which porting job?

A.R. Shale Targa

iTrader: (2)

IIRC they have a program that just CNC ports the chambers and then the exhaust bowl/short side.
The head doesn't flow 60% E/I ratio stock cuz the exhaust sucks; but more because the intake flows so well. They kick the exhaust side to balance the head to around 70% while keeping the intake runner at 261cc for velocity on 370" range engines

JimmyGTO

Thanks for the info.

Exira

iTrader: (1)

I bought the CNC heads used, that primarily why im building the engine, because i have had them sitting for 2 years and going to no use. Can the exhaust valves be cut larger and run a larger valve to help? i have them at the machine shop now

Exira

iTrader: (1)

As far as the carb goes, i have been talking with pro systems and i am super pleased with the customer service i have been getting, so i am going with them.

sbf

x2 on the aed carb ive always had nothing but good luck with them from a 7 sec street car to a 4 sec drag car

baronsmith98

iTrader: (2)

You won't regret the Prosystems carb. I just got one for my motor and it runs way better than the quick fuel that was on it. Patrick knows his ****!