Were you supposed to have a non stock front cap? My 59 front cap is pretty beefy(especially compared to 400/455) I'm definately NOT going to change it out. On my 59 #1-4 cap are all same height and near 1/4" taller than 400 caps at the bolt shoulder and center. Still thinking of staying with two bolt iron caps vs steel splayed and just build a halo with additional supports at the pan rail. Halo will get doweled to caps to get maximum effect for wave and walk control. Those 59 caps are strong! Different expansion rates of steel vs iron bugs me, not really a strength issue. IMO the 4 bolt splayed likely is stronger. Is it really just a warm fuzzy though? I'm keeping RPM to about 6k max. Its the extra clamp though that tells me 4 bolt splay even if steel will better handle high 1000+hp loads vs just two bolts clamping a good strong iron cap.
DANG,I wish Milodon Pontiac ductile iron caps were splayed, I wouldnt be so hesitant.
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