Explorer GT40 heads vs Cobra GT40 heads
Im sure this has been discussed before, but I have searched, and havnt been able to find the answer...
I know the Cobra GT40 heads came with upgraded Crane 1.7 roller rockers, but did the Cobra GT40 heads come with upgraded valve springs? If so what is the max valve lift on them?
Or are the valve springs in the Cobra GT40 heads the same valve springs used in the Explorer GT40 heads?
Im sure this has been discussed before, but I have searched, and havnt been able to find the answer...
I know the Cobra GT40 heads came with upgraded Crane 1.7 roller rockers, but did the Cobra GT40 heads come with upgraded valve springs? If so what is the max valve lift on them?
Or are the valve springs in the Cobra GT40 heads the same valve springs used in the Explorer GT40 heads?