The Ford Barn

deuce295 · 10-05-2023, 11:14 AM

Scat crankshaft shows stroke length 4.00 and 4.250. I thought the stock stroke was 4.125. Which is a stock replacement crank? Thanks for the help.

Jim Brierley · 10-05-2023, 11:18 AM

4.250"

deuce295 · 10-05-2023, 11:22 AM

Thanks Jim. Appreciate the reply.

BRENT in 10-uh-C · 10-05-2023, 12:09 PM

Quote:

Originally Posted by deuce295

Scat crankshaft shows stroke length 4.00 and 4.250. I thought the stock stroke was 4.125. Which is a stock replacement crank? Thanks for the help.

Quote:

Originally Posted by Jim Brierley

4.250"

Ummm, yes better go with 4.250" for a stock A crankshaft. The Model-T was 4.000"

johnneilson · 10-05-2023, 12:23 PM

Hmmmm no
The model a stk stroke is 4.250
Deck ht 11.5
Rod 7.5
Pist ch 1.875

Terry Burtz, Calif · 10-05-2023, 12:28 PM

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The Ford crankshaft drawing A-6303 specifies a stroke between 4.246 and 4.254 inches.

Dodge · 10-06-2023, 12:35 AM

Terry, Happy to note your cranks are right on at 4.250

10-05-2023, 11:14 AM	#1
deuce295 Member Join Date: May 2010 Location: Appleton, Wisconsin Posts: 58	Crankshaft question (stupid?) Scat crankshaft shows stroke length 4.00 and 4.250. I thought the stock stroke was 4.125. Which is a stock replacement crank? Thanks for the help.

10-05-2023, 11:18 AM	#2
Jim Brierley Senior Member Join Date: Jun 2010 Location: Temecula, CA Posts: 4,251	Re: Crankshaft question (stupid?) 4.250"

10-05-2023, 11:22 AM	#3
deuce295 Member Join Date: May 2010 Location: Appleton, Wisconsin Posts: 58	Re: Crankshaft question (stupid?) Thanks Jim. Appreciate the reply.

10-05-2023, 12:23 PM	#5
johnneilson Senior Member Join Date: Jun 2010 Location: 34.22 N 118.36 W Posts: 1,181	Re: Crankshaft question (stupid?) Hmmmm no The model a stk stroke is 4.250 Deck ht 11.5 Rod 7.5 Pist ch 1.875 __________________ As Carroll Smith wrote; All Failures are Human in Origin.

10-05-2023, 12:28 PM	#6
Terry Burtz, Calif Senior Member Join Date: May 2010 Location: Campbell,CA, USA Posts: 395	Re: Crankshaft question (stupid?) Sponsored Links (Register now to hide all advertisements) The Ford crankshaft drawing A-6303 specifies a stroke between 4.246 and 4.254 inches.

10-06-2023, 12:35 AM	#7
Dodge Senior Member Join Date: Nov 2011 Location: Sonoma, CA. Posts: 1,568	Re: Crankshaft question (stupid?) Terry, Happy to note your cranks are right on at 4.250