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-   -   Forged crank and balancer for 306 (http://www.clubcobra.com/forums/small-block-talk/130650-forged-crank-balancer-306-a.html)

CobraV8 08-17-2014 12:21 PM

Forged crank and balancer for 306
 
What crankshaft and balancer would you recommend?

I tend towards the Scat 43021 http://www.summitracing.com/int/part...3021/overview/

-Simon

blykins 08-17-2014 04:32 PM

I would use a forged crank, but honestly, any crank you use will probably out live the block at almost 600 hp. They split in half at lower levels than that.

ERA Chas 08-17-2014 06:15 PM

Quote:

Originally Posted by blykins (Post 1315281)
I would use a forged crank, but honestly, any crank you use will probably out live the block at almost 600 hp. They split in half at lower levels than that.

A World won't-saw close to 2000 in a Fastest Street car app.
Did you ever see a Dart split Brent? I just don't know.

blykins 08-18-2014 02:52 AM

No, but I assumed he was using factory block.

CobraV8 08-18-2014 09:34 AM

I think a forged crank might be cheap insurance for even such a relatively mild engine, considering the effects of a crank breaking at a 4500rpm launch with nitrous.

Also the bottom end would be ready for some higher revs if I ever feel the need to go to a solid roller in the future.

So what brand can be recommended? I used Scat I-beam rods in the past and was very pleased with the quality.

blykins 08-18-2014 09:55 AM

I would go with a Scat forged crank and Scat I-beam rods.

xb-60 08-18-2014 10:06 PM

Quote:

Originally Posted by blykins (Post 1315353)
I would go with a Scat forged crank and Scat I-beam rods.

Brent - external or internal balance?
Cheers,
Glen

blykins 08-19-2014 03:54 AM

If I were building this engine for the application he was intending, I would internally balance it.

However, in his case, it would depend on several things...if he already has a balancer and flywheel, how light his pistons and rods are, and if he had the budget to internally balance.

PANAVIA 08-19-2014 04:38 PM

+1 for internally AKA 0 balance - Scat or Eagle Forged and nice Hbeam Rods

this should get you to 400hp.

Steve

xb-60 08-19-2014 10:24 PM

Hasn't the jury come out in favour of Scat forged cranks over Eagle?
If it's a Scat crank, which the OP favours, do Scat do a neutral/zero balance 3" stroke forged crank?
Cheers,
Glen

blykins 08-20-2014 03:46 AM

Yes, the jury is absolutely out....

And yes, Scat offers a 3" stroke crank that will internally balance.


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