GT-40 Head ? -

Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

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Old 11-02-2006, 03:32 PM   #1
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Default GT-40 Head ?

ok so if i got some gt40 heads cast iron ones and i had them milled down to a bit to reduce the size of the combustion chamber would i need to get valve notches i my pistons its a 289 BTW
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Old 11-02-2006, 06:08 PM   #2
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Default RE: GT-40 Head ?

I doubt that you would need to, unless you installed a very long duration cam.
Rig up a pair of solid lifters and do the clay test on the piston just to be sure.
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