View Full Version : carb tuning needed for head change?

03-15-2006, 03:11 PM
is re-jetting the carb needed for changing the heads to GT40P heads?

03-15-2006, 03:21 PM
No, you're not increasing horsepower enough with those heads to warrant rejetting. I have a GT-40 equipped PCM with a stock Holley, no problems.

03-15-2006, 04:38 PM
martini, im glad you replied. I know you did alot of work on your old MC.
did you change the intake too, or just the heads and RR's?
how much low end trq will I gain switching to GT40P and a electronic conversion on a 91 190 w/ a Slot. ??
and, do you think the roller rockers are worth it?