quickbrad

I have 383 eagle rotating asmbly, with lt4 cam, flat-tops- tpi-- 26# injectors-- slp runners.. The heads are Brodix 221 cc intake runners-64 cc-2.05/1.60.. what should it run like and what should I expect over a set of stock l98 heads???

Atilla the Fun

64cc on a flat top 383 will put you around 10.9:1. Your cam was probably cheap, but is very tame. 221cc heads will work up to 7000 rpm, so no using the stock TPI manifold on top. Best to run either a Victor Jr. for carbureted or a TPIS Mini-Ram for EFI. And change the cam. then you could see 500 horses with 1.75" headers and a single 3" exhaust won't flow enough.
If 7000 rpm isn't what you want, sell those heads and get some AFR 195s. The 75cc version should give you around 9.9:1, and this would work up to 6500 rpm. Still would want a cam change.
As it stands, you have a mis-matched combination.

birdtojag

iTrader: (1)

Mismatched combonations will work against you. Before picking a cam, get the flow rates and choose your cam from there.

quickbrad

Cool thanks for the info on the brodix,,,,, what about Vortec?????????

Atilla the Fun

The 170cc, casting numbers 062 and 906, Vortec 350 truck heads, on a 383, will be all done by 5500 rpm. They are a much better match for your cam, and for TPI. But Edelbrock's E-Tec heads are lighter by about 25 pounds each.