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Kirkham Motorsports

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  #11 (permalink)  
Old 08-11-2017, 06:08 AM
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
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Quote:
Originally Posted by blykins View Post
You don't need forged, and scat doesn't make a steel 428 crank anyway.

I personally would go with a 4.250, and yes, when you add 30-60 cubes, the cam selection will change. The cam you have will be much milder with a larger engine. If that's something you can deal with, then no need to change. Also no problem with mixing manufacturers if you do change.

Save the $500 that you would spend on a steel crank, get a cast 4.25 stroke, and buy a new set of rods and piston rings with the money.
Doug, you should listen to Brent, he's much brighter than I am on these matters. But, I will throw this in: I know you're younger than I am (because I've met you) and I know you run your car harder than I do mine (because you break it every couple of years). If you don't want to do all of this again, err on the side of "less is more" on your rebuild. A slightly shorter stroke, slightly less cam lift, and slightly less power, will let your engine live longer and, that way, the next "major rebuild" will be undertaken by your heirs.
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