im pretty close to buying some gt40p heads cause there cheaper than real gt40 but i herd from a few people that they dont have the "thermactor plumbing" smog pump stuff on the back of the head is that true and if it is a detailed guide on how to drill it, or a estimate for a machine shop to do it.
p.s. i need the cuz i live in California
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1993 5.0 Mustang, 93 cobra intake , GT40p heads, Trick flow valve-springs upgrade, 65mm throttle body,73mm c&l maf, 24# ford racing injectors, cold air intake, ford racing hardened push rods, ford racing headers, flow masters, cat-back x pipe,Hurst Short Shifter, MSD coil and 6AL, ford racing springs, roll cage, racing seats, Simpson 5 point seat belt harness, FRPP hood pins, new water pump, ARP and felpros all around. And a ton of WD-40 lol
as far as i know,the only standard GT40 cast iron heads that came with the air holes drilled were the ones that came from the factory on 1993-1995 cobra's and possibly the F-150 Lightning pickups(not totally sure on those though).
ANY head from an Explorer/Mountaineer,GT40 or GT40P WILL NOT have the air holes drilled.. i have a set of GT40P heads on my car and a set of GT40 cast iron heads sitting in the garage..both are from explorers..neither have the holes drilled
i swear i recall reading somewhere that thumper or similar port/machine shop was able to drill the stuff out for you at fairly reasonable prices
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92 lx 5.0 vert-,stock plastic airbox,stock T-5,shifter & clutch,stock 19lb injectors and fuel pump,no radio,speakers or cruise control..antenna delete(for less wind resistance)
(new)best so far 12.712 @ 105.99mph 1.752 60ft
as far as i know,the only standard GT40 cast iron heads that came with the air holes drilled were the ones that came from the factory on 1993-1995 cobra's and possibly the F-150 Lightning pickups(not totally sure on those though).
ANY head from an Explorer/Mountaineer,GT40 or GT40P WILL NOT have the air holes drilled.. i have a set of GT40P heads on my car and a set of GT40 cast iron heads sitting in the garage..both are from explorers..neither have the holes drilled
i swear i recall reading somewhere that thumper or similar port/machine shop was able to drill the stuff out for you at fairly reasonable prices
thanks looks like i got to find a cobra
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1993 5.0 Mustang, 93 cobra intake , GT40p heads, Trick flow valve-springs upgrade, 65mm throttle body,73mm c&l maf, 24# ford racing injectors, cold air intake, ford racing hardened push rods, ford racing headers, flow masters, cat-back x pipe,Hurst Short Shifter, MSD coil and 6AL, ford racing springs, roll cage, racing seats, Simpson 5 point seat belt harness, FRPP hood pins, new water pump, ARP and felpros all around. And a ton of WD-40 lol
does any one know how to make it look like there hooked up so i can pass the visual part of the exam
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1993 5.0 Mustang, 93 cobra intake , GT40p heads, Trick flow valve-springs upgrade, 65mm throttle body,73mm c&l maf, 24# ford racing injectors, cold air intake, ford racing hardened push rods, ford racing headers, flow masters, cat-back x pipe,Hurst Short Shifter, MSD coil and 6AL, ford racing springs, roll cage, racing seats, Simpson 5 point seat belt harness, FRPP hood pins, new water pump, ARP and felpros all around. And a ton of WD-40 lol
Need them bolted to the back of the heads around the back of the engine.
just bolt them in to a dead end and it will work thanks
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1993 5.0 Mustang, 93 cobra intake , GT40p heads, Trick flow valve-springs upgrade, 65mm throttle body,73mm c&l maf, 24# ford racing injectors, cold air intake, ford racing hardened push rods, ford racing headers, flow masters, cat-back x pipe,Hurst Short Shifter, MSD coil and 6AL, ford racing springs, roll cage, racing seats, Simpson 5 point seat belt harness, FRPP hood pins, new water pump, ARP and felpros all around. And a ton of WD-40 lol
gt40p heads street legal (california) 
