General Category > Quadrajet Carb Talk and Tips

WOT Shift points th400, Pontiac 400

(1/1)

Tyler73Deville:
Hey everyone, I'm trying to adjust the wide open throttle shift points through the governor on a th400 in a Gto. So far I got her to around 4600-4800rpm from the previous 4000 rpm. Big difference..

What I'm trying to figure out is how high I should go, given this engine was rebuilt 30 years ago with cast pistons and connecting rods, even has the stock valve springs.
Cam has since been changed to a Crower 60916 degreed at 108 icl with 1.52 roller tip rockers.

Unported 16 heads, high compression,stock intake manifold,quadrajet and 3.55 gears.

I was thinking 5200 rpm, given the camshaft... let me know what you all think, thank you.

Car is mainly used as a cruiser with occasional wot bursts.





 

Cliff Ruggles:
5300rpms would be plenty considering stock cast iron connecting rods are still in use.  They are a sore spot for Pontiac engines but in a 400 build fine at that RPM......IMHO...

Navigation

[0] Message Index