Thread: 8-71 blown big block,questions

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i have a blown 548 one key way in the crank fits gooodin tight with a fluidampr been that way for over 5 years it is 10to1 with 10 of boost I BEAT THE HELL OUT OF IT. so the one key way that would not worry me to much but the rods i would go up to a H beam and every thing looks good but if you pull it down why not go with some H beams and add a key way?

if I took it apart I would change out the rods and crank key,BUT it runs so perfectly now I hate to fix it ,IF IT AINT BROKE,I could just leave the boost low while I build a replacement,I have a nice standard bore 4 bolt 454,a454 steel crank,a bunch of 7/16 chevy rods,also have a 427 tall deck motor,steel crank,standard bore,I am trying to decide what size the replacement motor should be,I also have a nice set of 990 heads that will go on this next motor,I'm thinking 496 or 525 with 8# boost ,pump gas

Originally Posted by pat mccarthy

i have a blown 548 one key way in the crank fits gooodin tight with a fluidampr been that way for over 5 years it is 10to1 with 10 of boost I BEAT THE HELL OUT OF IT. so the one key way that would not worry me to much but the rods i would go up to a H beam and every thing looks good but if you pull it down why not go with some H beams and add a key way?

what do you think of stock chevy 7/16 rods compared to say eagle rods?I have 19 of the 7/16 chevy rods,could sell em and buy better ones,sell my 454 steel crank and buy a 4.25 stroker,some 5.385 rods for my 4 bolt 454 block,I have everything to build to build a 454,stock heavy duty chevy parts,would aftermarket eagle 496 be better ?