71-74 are getting hard to find 69-70 are shorter.
as far as converting there are two ways small chevey stle cam and stock 5.0 spyder gear . or normal cam with roller lifters with bars.
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I just saw some slotted roller lifters with a keyway and no bars for a chev so im trying to find if they make them for Ford yet.
hp depends on the prep. if its a concern get a sportsman block
my present on hits 700 but im thinking of lowering the torqu curve now.
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89 with 331 t3'/t4 hybrids. upr Suspention worked out finnaly . 9.89 144 mph .
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