Upgraded GT40 stud mount heads w/ double springs. Pulled these off my 1990 mustang GT after about 100 miles when I got some Trick Flow heads fro my birthday. They have new valves, valve job, 3/8 stud mounts and double springs good for up to .550 lift. I do not drive my car much so I only put 100 miles on them after the initial build. These heads with a small comp cam (XE264HR) 70 mm throttle body and 24 lb injectors netted 40 HP and 60 ft lbs torque. Got the car dyno tuned after the build. Please feel free to call me, I am located in Houston, TX. Jason 291-755-7839
$550.00. These heads have well over this cost for the work put into them.
$550.00. These heads have well over this cost for the work put into them.
