steele901

thats funny because i have gt40p's and i bought mac shorties specifically for my application. theyre supposedly an exact replica of the ffrp shorties

man, if people on this message board quit acting like they knew everything it would make the world a better place...

anybody else thats never touched a set of gt40p heads got some helpful info for 95walter?

95walter

thanks for the support, i really like your car to steele901 i have the same car with 18in chrome bullitts. what do you have done to her

steele901

with the gt40p h/c/i swap properly tuned you're gonna walk all over that new edge. it takes a full bolt-on new edge to gimme a run now.

fyi: if you don't get a tune after that swap your car is gonna run dangerously lean and probably surge at idle as well. the t4m0 computers in the sn95 5.0's are garbage. my car would backfire and shoot fireballs out my exhaust pipes when racing before i got it tuned. felt like a whole new car after the tune, picked up some much more hp it was ridiculous.

steele901

-gt40p's with 1.7 rockers
-mac shorties
-mac h-pipe
-flowmaster catback
-mac cai
-mac underdrive pulleys
-373 gear
-king cobra clutch
-bfg drag radials

wow, i have a lot of mac stuff don't i?... eehh, the price is right for this poor college kid.

i think thats all my "go" mods

5IVE.OH

Didn't know mac made shorties for the P heads, I bought the longtubes what a PITA. Oh well good to know.

steele901

yeah, the bbk long tubes we put in my buddys 89 were a nightmare