Quote Originally Posted by Fast355 View Post
L99 4.3 V8 is based off the LT1 setup and uses the same PCM although a different calibration than the LT1. Most B-cars seem to have $EEB files. Should be a 4.3 file on this site if you need one. 4.3 V8 will run smoother and make more power than that 4.3 V6 that was under your hood to start with. Its still a V8 and will respond to basic hotrod parts. Headers, small cams, tuning, etc.


Thanks. Any good info is helpful. Got a lot to learn