The Ford Barn

kurt v · 04-12-2026, 01:39 PM

Is the spline 1 3/8" on the side shift trans or the i" ?

Mart · 04-12-2026, 03:59 PM

1-3/8" ten spline

Mac VP · 04-16-2026, 04:14 AM

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The 1-3/8” diameter spline is correct for 1932-48 passenger car transmissions, with the exception of the 1937-39 cars with the V8-60 transmission……those had the smaller transmission which had the 1” diameter splines. The truck transmissions used the 1-3/8 splines well beyond 1948…..into the 1960’s anyway.

04-12-2026, 01:39 PM	#1
kurt v Senior Member Join Date: Sep 2021 Location: summerton, sc Posts: 544	1940 clutch spline size Is the spline 1 3/8" on the side shift trans or the i" ?

04-12-2026, 03:59 PM	#2
Mart Senior Member Join Date: May 2010 Location: Solihull, England. Posts: 9,239	Re: 1940 clutch spline size 1-3/8" ten spline

04-16-2026, 04:14 AM	#3
Mac VP Senior Member Join Date: May 2010 Location: Cincinnati, OH Posts: 1,465	Re: 1940 clutch spline size Sponsored Links (Register now to hide all advertisements) The 1-3/8” diameter spline is correct for 1932-48 passenger car transmissions, with the exception of the 1937-39 cars with the V8-60 transmission……those had the smaller transmission which had the 1” diameter splines. The truck transmissions used the 1-3/8 splines well beyond 1948…..into the 1960’s anyway. __________________ VANPELT SALES LLC Cincinnati, Ohio Office: 513-724-9486 www.vanpeltsales.com www.classictransmission.com