After a break of about 3-4 years, I am finally back to messing with GM stuff.

My brother picked up a 90 Formula with the 305 TBI, 305 was shot, so picked up a L31 350 out of a 3500 Express. LT4 Hotcammed it and swapped on a Marine TBI and adapter plate on it. Only waiting on the headers to get it swapped into the car. Will be tuning it with either the EBL or a 93-95 TBI truck PCM. Have not decided whether to keep the 700r4 or replace it for a built up 60E from a later LT1 F-car.

Also swapped the 97 Express from the Vortec Black box ecm to the 0411 so that I can use my HPTuners on it. It has the 01-02 intake ducting, LT4 production cam in its L31 350, a set of bolt on direct replacement highflow magnaflow cats, a set of edelbrock shorty headers, and a stock muffler. Put in a Transgo HD2 shift kit not long ago. Finally may swap the gears from 3.42s to 4.10s with a posi for better acceleration in around town traffic. Its almost 6,000 lbs and needs the extra punch from a stop.

All in all, happy to be tuning GM stuff again after tuning Dodge and Nissan, GM tuning is by far ahead of the curve compared to those two.

I loved my Hemi Ram but the lack of affordable transmission tuning really hindered my luck with transmissions. Went through 5 of them before 70K. Got out of that thing and picked up a Titan. Titan has even less tuning support but luckily it loves the Hypertech can tune thats on it.

My next GM tuning project will be a Ford Galaxy with a GM ECM controlling the engine. Have not decided if it will be TBI or MPFI.

 

Glad to see you back, been getting nothing but good information out of your posts from years past.