Originally Posted By fast68plymouth
I talked with someone who tested 500" (4.380 x 4.15) with the TF heads last week.
256/262-112 solid cam, .567/.585 w-1.5 rockers, 6bbl, 2" tti headers, 11:1.
I had told him it should make 645tq/625hp, made 649tq/628hp.
I would think with the TF intake and a big 4150 carb, maybe some sort of spacer, it would make another 25hp or so.


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