Hi I was wondering if anyone knows if you can run GT 40 heads, a stock Mustang HO cam and 1.6 rockers and have sufficient piston to valve clearance on a stock shortblock in a 1989 Town Car. I always thought I had read that it should be ok, but i just picked up a high performance Ford Engine parts interchangeability book and it says that you should not use GT 40 heads on motors with pistons that do not have valve reliefs. Has anyone used these on their cars with a similar setup? I was going to run a GT 40 Explorer intake with a 65mm TB on it.
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you will be fine.......the low output pistons are dished instead of having valve reliefs......i've had conversations with some mustang guys a few yrs back when i was in search of a low mile ho shortblock for my town car, that prefer to use the lopo shortblock......one guy was trying to sell me a 89 townie shortblock with about 100,000 miles in stock form then got the engine from the junkyard and put twisted wedge heads on it and i forget what cam and a 100 shot and he was running 11.06 in a fox mustang.....keep the lift under .500"
1986 lincoln towncar signature series. 5.0 HO with thumper performance ported e7 heads, 1.7 roller rockers, warm air intake, 65mm throttle body, 1/2" intake spacer, ported intakes, 3.73 rear with trac lock, 98-02 front brake conversion, 92-97 rear disc conversion, 1" rear swaybar, 1 3/16" front swaybar, 16" wheels and tires, loud ass stereo system, badass cb, best time to date 15.94 at 87 mph. lots of mods in the works 221.8 rwhp 278 rwt
2006 Lincoln Town Car Signature. Stock for now
1989 Ford F-250 4x4 much much more to come, sefi converted so far.
1986 Toyota pickup with LSC wheels and 225/60/16 tires.
2008 Hyundai Elantra future Revcon toad
1987 TriBurner and 1986 Alaska stokers keeping me warm. (and some pesky oil heat)
please be patient, rebuilding an empire!
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