Truck Clutch Fork Ratio

Posted By charliemccraney 11 Years Ago

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Truck Clutch Fork Ratio

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charliemccraney

Posted 11 Years Ago

Supercharged

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Does anyone have one handy to check the ratio of linkage travel to throwout bearing travel?

Lawrenceville, GA

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lyonroad

Posted 11 Years Ago

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Rono (1/17/2014)

So would car clutch forks have a different ratio and if so, why?

Rono

I agree with Horvaths. Probably for increased leverage. Some trucks had 10.5", 11" and 12" clutches (pressure plate springs were different). Also cars had the big helper spring on the pedal while trucks had the through the floor thigh-master style pedal.

Mark

1956 Mercury M100
1955 Ford Fairlane Club Sedan
Delta, British Columbia

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Truck Clutch Fork Ratio By charliemccraney ( 11 Years Ago )

I've just rebuilt the T98 in Albatross. That's our '55 F500. I have... By The Horvaths ( 11 Years Ago )

BTW: the casting bears the number TAAA7515B By The Horvaths ( 11 Years Ago )

I checked one of my spares and I get about 3 1/4 and 6 1/4. It looks... By charliemccraney ( 11 Years Ago )

My guess would be that the difference may be related to different... By The Horvaths ( 11 Years Ago )

So would car clutch forks have a different ratio and if so, why? Rono... By Rono ( 11 Years Ago )

[quote][b]Rono (1/17/2014)[/b][hr]So would car clutch forks have a... By lyonroad ( 11 Years Ago )

I reason (aloud) that, for a given transmission/bell housing, the... By The Horvaths ( 11 Years Ago )

I looked in my'57-'66 Truck parts catalog and any of those trucks with... By charliemccraney ( 11 Years Ago )

Charlie, I have a '56 clutch fork (at least it came in a "56) in the... By lyonroad ( 11 Years Ago )

See how it compares to the dimensions we've posted and the number on... By charliemccraney ( 11 Years Ago )

This is from a bellhousing off a B9 block with hydraulic clutch. I... By slick56 ( 11 Years Ago )

[quote][b]charliemccraney (1/18/2014)[/b][hr]See how it compares to... By lyonroad ( 11 Years Ago )

Same casting as mine but I measured with a rule and one eye. By The Horvaths ( 11 Years Ago )

Cool! So it looks like '54-'56 and '57-'64 are different. By charliemccraney ( 11 Years Ago )

My '56-'57 book shows TAAA 7515B for '56 and B7C 7515A for '57,,,,,10... By Park Olson ( 11 Years Ago )

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