427 vs 454

[Joe L.]

Re: 427 vs 454

And just to throw a twist into this discussion, just for the heck of it. If someone has rebuilt a 427 and stroked it with a 454 crank (or aftermarket 4.25in crank)---------------AND THEN HAD IT INTERNALLY BALANCED---------------the same 427 balancer and flywheel can be used. Thus, checking the balancer/flywheel for additional weight and determining whether it is a 427 or 454 is invalid.
My philosophy is "More cubes is still not enough". Therefore, I feel a 427 or 454 deserves to become a 496. Too much power and torque is just right!

Tom-----


Yes, this can be done. However, to do it the crankshaft requires expensive balancing with mallory metal (tungsten alloy). It's rarely done because it's much easier and cheaper to just use the counterweighted balancer and flywheel.

[Tom P.]

Re: 427 vs 454

Tom-----


Yes, this can be done. However, to do it the crankshaft requires expensive balancing with mallory metal (tungsten alloy). It's rarely done because it's much easier and cheaper to just use the counterweighted balancer and flywheel.

Yep, you are correct. But SOME of us go to the added expense of having a crank internally balanced. One of my reasons for internally balancing an EXternal balance engine is to eliminate those tell tale indicators (balancer/flywheel). The SB400 in my 56 is internally balanced and it has a 327 finned balancer, massaged 1966 2.02 heads with the double humps removed and a pyramid symbol shaped on the ends of the heads and a Bill Thomas modified FI unit. With a repo airbox, the intent was to duplicate the appearance of a 57 FI 283 Airbox car (of course, the fat balancer does not look like a 57 balancer).


















And a dual bolt pattern for valve covers so that I can use 9-fin, staggered valve covers.

[Kenneth B.]

Re: 427 vs 454

Kenneth------



No, the oil pan is not deeper. However, the internal baffle on the oil pan is set a little deeper to allow clearance for the crank.

THANKS JOE. That's what I meant to say. I tried to put a 427 pan on a 454 & it hit the baffle.