Quote Originally Posted by pnut
This is a 350 with a flat top pistons, and a full Holley Sytemax kit (234/244 cam, high flow aluminum heads, intake manifold). Also running full roller rockers, and using a Holley 750 carb with #69 Jets. It is running well, I can get it to idle at 600rpm even with this lopey cam. Running a TH350 tranny.

Problem is that I SHOULD be able to spin the tires off a stop, but can't. I have 35" diameter tires (Jeep), with 4.10 gears. I'm pretty sure this is not the core of the problem, but it contributes I'm sure.

I run at 2000RPM torque converter. I had a 3000 stall speed converter, but I hated revving up at every stoplight. I am quite certain that the core of my problem is engine to torque converter mismatch. I need to swap my cam for a cam with a lower RPM range (90% of my driving is 1800-3000 rpm on street and offroad). But before I do, I wanted to get some feedback.

If I do a cam swap with lower durations, should I also change out my intake? WIll I still be taking advantage of the aluminum heads? Any suggestions for a CAM? I am very much wanting a low rpm torque monster and I do not have that now.
For one the heads are to big.Take 20 cc away from the head port volume,take 25 degree's of duration away from the cam at .050.
Use an Edelbrock Performer intake or one like it.Try a 500 or 600 cfm carb.This should get you much closer.