The Ford Barn

medctr1 · 04-15-2013, 01:04 PM

I have a 1949 F1 239 flathead with a crash box non syncro 4spd. It had a 10inch clutch,but it seems that the 4spd should have come with a 11inch clutch.Should I change to an eleven, would it be more original.....advantages?

alan · 04-15-2013, 08:20 PM

+since it is doubtful that you will be hauling a heavy load, you won't need an 11 clutch, 10" is just fine, not completely sure your F1 even with the four speed came stock with an 11", I am sure it could have been special ordered.

49r · 04-16-2013, 03:31 AM

My 49 F1 came out of the factory with the heavy duty 3 speed box (synchro 2nd and 3rd and lower 1st and 2nd gear ratios than the lighter duty box) and the 11 inch clutch and pressure plate. I looked at mine after 38 years of driving and there was no noticeable wear. Some say this is a much heavier clutch than the 10 inch but I have never found it so. The 10 inch will be fine for standard driving with the 11 inch more suitable for heavy haulage.

mtflat · 04-16-2013, 08:03 AM

My 48 F1 came with the 11" clutch also - and I agree with the guys about the 10 working just fine unless you make your truck work hard like mine has to.

4t8v8 · 04-16-2013, 11:49 AM

Sponsored Links (Register now to hide all advertisements)

My engine came in a new F3 purchased in 1950. It had the 4 speed crash box. The truck was used for heavy farm work all its (first) life. When I tore it down for rebuild I found it had a 10 inch clutch. Used hard from 1950 to 1968 and never a clutch problem.

04-15-2013, 01:04 PM	#1
medctr1 Junior Member Join Date: Sep 2012 Location: fairbanks alaska Posts: 15	More F1 clutch questions I have a 1949 F1 239 flathead with a crash box non syncro 4spd. It had a 10inch clutch,but it seems that the 4spd should have come with a 11inch clutch.Should I change to an eleven, would it be more original.....advantages?

04-15-2013, 08:20 PM	#2
alan Senior Member Join Date: Jul 2010 Location: UPSTATESC Posts: 669	Re: More F1 clutch questions +since it is doubtful that you will be hauling a heavy load, you won't need an 11 clutch, 10" is just fine, not completely sure your F1 even with the four speed came stock with an 11", I am sure it could have been special ordered.

04-16-2013, 03:31 AM	#3
49r Senior Member Join Date: Jul 2011 Location: Wellington New Zealand Posts: 308	Re: More F1 clutch questions My 49 F1 came out of the factory with the heavy duty 3 speed box (synchro 2nd and 3rd and lower 1st and 2nd gear ratios than the lighter duty box) and the 11 inch clutch and pressure plate. I looked at mine after 38 years of driving and there was no noticeable wear. Some say this is a much heavier clutch than the 10 inch but I have never found it so. The 10 inch will be fine for standard driving with the 11 inch more suitable for heavy haulage.

04-16-2013, 08:03 AM	#4
mtflat Senior Member Join Date: May 2010 Location: Kalispell Montana Posts: 344	Re: More F1 clutch questions My 48 F1 came with the 11" clutch also - and I agree with the guys about the 10 working just fine unless you make your truck work hard like mine has to.

04-16-2013, 11:49 AM	#5
4t8v8 Senior Member Join Date: Nov 2011 Location: NW Arkansas Posts: 524	Re: More F1 clutch questions Sponsored Links (Register now to hide all advertisements) My engine came in a new F3 purchased in 1950. It had the 4 speed crash box. The truck was used for heavy farm work all its (first) life. When I tore it down for rebuild I found it had a 10 inch clutch. Used hard from 1950 to 1968 and never a clutch problem.