Crossover point between billet and forged cranks.

[disco stu]

When is it time to start thinking beyond forged? Seriously. I don't want to hear "you can run into the nines with....." You know what I mean.

6 banger crank with 4 mains, when is a forged crank not enough?

Discuss. :smile:

 

[boostingbuick]

I know there is a HP cap on a forged crank. I don't know what it is but I would guess its around a 1000 crank hp. And since you have the money to cross that HP line then a 2800 crank is not far out of reach.

 

[disco stu]

Meh, I'm not at the 1k HP level yet. But i've been running 9.6x on old outdated stuff and heads that were overported that slowed me down 5 mph.

I figure I can improve on that with some updating, fixing my combo, and a few more cubes. I bet I can do at least 800hp. But over 2 grand in a billet over a forged is tough to swallow. It's a tough decision.

 

[Chuck Leeper]

Maybe call the folks at Lunati... They say that the forged has a better grain pattern than a billet....

 

[disco stu]

Now, theres a twist. No pun intended.

 

[gnxtc2]

Crankshaft Tech - Popular Hot Rodding Magazine

Billy T.
gnxtc2@aol.com

 

[Nick Micale]

Crankshaft Tech - Popular Hot Rodding Magazine[/url ]Billy T.

Very good article, but does NOT answer the question - which is stronger?

The one comment asks "why top fuel, funny cars, F-1 and others run billet", and a simple answer is they all have different and very special cranks that are cheaper as a billet, than as a run of forged cranks.

My experience in turbo Buick V-6's is limited to working on, and dealing with, engines approaching 1500 HP, and they were using forged cranks.

We have definitely seen that forged cranks will far outlast the HP that can be generated by a stock production block. At close to the 1000 HP level, those blocks do not last long, forged cranks have been fine there.

A specific answer to your post is that your best build and budget can be handled by either!