Quote:
Originally Posted by bullet1
not sure how long this engine has been sitting around so i would probably tear down and check out anyways.i also have a chance at a 68 455 with c heads but im sure this would be a full rebuild.i just want to have the right setup so when i do this i will be happy with the results.may get both and combine the two sounds like the 425 crank is the one to have.c heads seem to be the choice heads.will the c heads fit on the 425?the 425 seems to be the one that revs a little quicker.like to show the chevy boys a thing or two.i have heard the term gutless cutlass enough through the years even though my 350 in its day may people think twice.have owned car since 85 first car i actually payed money for but it needs alot of tlc.
thanks again
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If the 425 is indeed of 65 vintage the C heads may cause pushrod clearance problems as the lifter bank angle is different than a 68 455 block. There is nothing wrong with using the stock A heads. However some early 425 heads had a different style rocker assembly and parts may be hard to get for these.
If you swap a 425 crank into a 455 you will need the 425 rods and pistons and then you will have recreated a 425 in a 455 block.
The brackets and pulleys from a 455 will work on the 425.