Yea...even a 326-400 crank will fit right in(same Main size, rod bearing size, and stroke... No , on the 421-455..
If they need one, i have crank, will sell
PM me...
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1968 Bird/TRW 455/Home ported 13's, '70 Qjet,Holley Street Dominator manifold, Comp Solid FT, 10.817/122.30/1.440
Workin' on E/SA combo
3119 E/SA