Crankshaft question

Kdw1403 · 02-11-2021, 01:21 PM

In stock eliminator is it legal to turn a large journal crank down to a small journal crank. What about reducing the main size?

Glenn Briglio · 02-11-2021, 01:28 PM

Quote:

Originally Posted by Kdw1403

In stock eliminator is it legal to turn a large journal crank down to a small journal crank. What about reducing the main size?

Only if the engine came with small journal to begin with from factory

GTX JOHN · 02-13-2021, 02:55 AM

Some gentleman running stock have reduced Main size (Ex:360/2.81 down to 2.50
and use a 340 block in mopars).

The low RPMs of most stockers = I think it is a waste of time as well
as total illegal

My .02

Larry Hill · 02-13-2021, 09:12 AM

Are the early 360 blocks, 71, 72, still in demand?

GTX JOHN · 02-13-2021, 06:36 PM

Absolutely Larry!

The casting # must start with 34 or 36.

If Std. they are worth $500.00 every day of the Week.

I am hoarding a couple for spares for my new Ram Truck

that is almost done.

Look out Tree = Here I come!

02-11-2021, 01:21 PM	#1
Kdw1403 Member Join Date: Nov 2016 Posts: 194 Likes: 47 Liked 68 Times in 22 Posts	Crankshaft question In stock eliminator is it legal to turn a large journal crank down to a small journal crank. What about reducing the main size?

02-13-2021, 02:55 AM	#3
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,530 Likes: 2,222 Liked 1,809 Times in 572 Posts	Re: Crankshaft question Some gentleman running stock have reduced Main size (Ex:360/2.81 down to 2.50 and use a 340 block in mopars). The low RPMs of most stockers = I think it is a waste of time as well as total illegal My .02 __________________ John Irving 741 Stock 741 Super Stock

02-13-2021, 09:12 AM	#4
Larry Hill Live Reporter Join Date: Oct 2004 Location: Hickory, Ky Posts: 10,280 Likes: 1,637 Liked 9,456 Times in 1,957 Posts	Re: Crankshaft question Are the early 360 blocks, 71, 72, still in demand? __________________ IHM Used Parts https://ihmusedparts.com 888-821-1817

02-13-2021, 06:36 PM	#5
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,530 Likes: 2,222 Liked 1,809 Times in 572 Posts	Re: Crankshaft question Absolutely Larry! The casting # must start with 34 or 36. If Std. they are worth $500.00 every day of the Week. I am hoarding a couple for spares for my new Ram Truck that is almost done. Look out Tree = Here I come! __________________ John Irving 741 Stock 741 Super Stock