...well, got the engine back together and in the car, new Trickflow 23 degree heads, SLP 51006 cam and 1:6 roller rockers installed. Port matched the heads and 58mm throttle body to the SLP t-ram intake, and installed a new SLP 600-800 over stock torque converter, new plugs and wires. The car now pulls extremely strong from 1500 rpm to the redline, but stumbles coming off of idle. Timing is dead on, all parameters look good and the computer is not throwing any codes. I'm thinking that maybe with the higher lift cam I'm not getting the proper vacuum at near idle rpms, and maybe need a new chip for it. Also wondering if I may have a bad injector, although you sure wouldn't think that the way it runs once the rpms come up. Anyone have any other ideas or areas to check.

TIA for your help...

jimbo

------------------
jimbo

Mosquito Coast F-Body Association (MCFBA)

1991 Formula SLP350
1999 Trans Am Firehawk

 

I'm not sure when GM went to non adjustable TPS on the F body, but if yours is adjustable, raising the voltage to .61/.64 will richen the tip in A/F ratio and many times will cure that just off idle stumble.

Hope this helps.

Jake

------------------
1986 Corvette Coupe, 415 CID, Edelbrock 6073s, ZZ9

 

...hey Jake...mine has the adjustable TPS...right now it's set around .49v. Will definitely give it a try.

thanx for the tip...