Does anybody know if the spring pressure on the FGT and GT500 heads is the same?
I know the exhaust spring pressure on the GT500 head is 72# closed with an install height of 1.550.
GT500 cam lift .393 straight across
FGT cam lift .438 in, .447 ex
I know the exhaust spring pressure on the GT500 head is 72# closed with an install height of 1.550.
GT500 cam lift .393 straight across
FGT cam lift .438 in, .447 ex