Quote:
Originally Posted by Clarkson  Slooger,I don't think the power will brake the crank,it's the RPM. Buy some decent ARP bolts and Studs and you could also get a nice fillet ground in the crank and use chamfered bearings, this stops it cracking at the journal. Those are the mods I used to do with Mini cranks. Rods are weak too, you can get Scat rods cheap and fit ARP rod bolts. I run my stock crank to 6500rpm, also make sure you have a steel flywheel.
Do you need parts?? |
What you guys have to remember is that Chevy invested $m in developing all their engines, even in the 60's.
375hp 327 in 1966
450hp 454 in 1969
The Big Block Chevy is fine in std form, rods and cranks as well. No need to chamfer fillets, that's race car stuff and totally un-neccessary on a street car. Why change it?
Lets face it, you will very rarely see 6500rpm on the road with a 454 and the thing that pushes the car down the road is torque, which the 454 has plenty of even in std trim.
I would keep the bottom end stock, maybe balanced, invest money in the cam, inlet and a good set of heads , that make power low down, you won't regret it.
The more air/fuel you can get through the engine, the more power it will make. The engine doesn't know whether it has a forged crank or Scat rods, just how much airflow it can handle. Get that right and you won't need anything else.
08-06-08, 07:18 PM
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