1988 mustang gt, 5 speed, mass air conversion, bbk unequal length headers, off road h-pipe, explorer intake, explorer 65 mm tb, 70 mm pro-m mass air meter, gt40p heads with comp cam springs.
I just finished swapping my e7's for the gt40p heads. I was told the springs were comp cam spring upgrade for these heads from a local mustang enthusiast. I had to use the pushrods and rockers from the e7 setup. First i torqued the rockers to 18-20 ft/lbs at tdc on compression stroke, valvetrain sounded awful. Then i tried the spin the pushrod until it stops then turn bolt one full turn, still, sounded awful. Then i tried it with the engine running and broke a rocker arm bolt during the procedure. What am i missing?
I just finished swapping my e7's for the gt40p heads. I was told the springs were comp cam spring upgrade for these heads from a local mustang enthusiast. I had to use the pushrods and rockers from the e7 setup. First i torqued the rockers to 18-20 ft/lbs at tdc on compression stroke, valvetrain sounded awful. Then i tried the spin the pushrod until it stops then turn bolt one full turn, still, sounded awful. Then i tried it with the engine running and broke a rocker arm bolt during the procedure. What am i missing?