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Old 10-05-2023, 11:14 AM   #1
deuce295
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Default 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.
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Old 10-05-2023, 11:18 AM   #2
Jim Brierley
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Default Re: Crankshaft question (stupid?)

4.250"
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Old 10-05-2023, 11:22 AM   #3
deuce295
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Default Re: Crankshaft question (stupid?)

Thanks Jim. Appreciate the reply.
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Old 10-05-2023, 12:09 PM   #4
BRENT in 10-uh-C
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Default Re: Crankshaft question (stupid?)

Quote:
Originally Posted by deuce295 View Post
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.
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Originally Posted by Jim Brierley View Post
4.250"
Ummm, yes better go with 4.250" for a stock A crankshaft. The Model-T was 4.000"
Attached Files
File Type: pdf Crankshaft Stroke.pdf (124.2 KB, 16 views)
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Last edited by BRENT in 10-uh-C; 10-05-2023 at 01:23 PM. Reason: corrected a typo & add picture
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Old 10-05-2023, 12:23 PM   #5
johnneilson
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Default 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
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Old 10-05-2023, 12:28 PM   #6
Terry Burtz, Calif
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Default Re: Crankshaft question (stupid?)

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The Ford crankshaft drawing A-6303 specifies a stroke between 4.246 and 4.254 inches.
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Old 10-06-2023, 12:35 AM   #7
Dodge
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Default Re: Crankshaft question (stupid?)

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