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View Full Version : carb tuning needed for head change?


DooSPX
03-15-2006, 04:11 PM
is re-jetting the carb needed for changing the heads to GT40P heads?

martini
03-15-2006, 04:21 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.

DooSPX
03-15-2006, 05:38 PM
excelent....
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?