BB W/ TH400 tailshaft length? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

MadnessBigBlock · 02-09-2012, 05:52 PM

What is the factory TH400 tailshaft length that would of been behind a big block in 68-72 trucks (I assume 68-72 used the same tailshaft length but correct me if im wrong)

hugger6933 · 02-09-2012, 10:50 PM

I think it was the "short" shaft if I get time I'll look under mine. Is'nt the short shaft like 4-6 inches?

MadnessBigBlock · 02-10-2012, 07:20 PM

Thanks if you get time please measure it and let me know thanks again Brett!
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MadnessBigBlock · 02-21-2013, 08:14 PM

any able to measure this for me? thanks, brett.

brad_man_72 · 02-21-2013, 10:28 PM

If its the short shaft the trans yoke will be 5.5" center of joint to end with a .5" counterbore.
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MadnessBigBlock · 03-10-2013, 08:55 PM

Anyone know the factory tailshaft length on th400 with big block in front?
Posted via Mobile Device

02-09-2012, 05:52 PM	#1
MadnessBigBlock Registered User Join Date: May 2008 Location: Neche, North Dakota/Winnipeg, Manitoba Posts: 605	BB W/ TH400 tailshaft length? What is the factory TH400 tailshaft length that would of been behind a big block in 68-72 trucks (I assume 68-72 used the same tailshaft length but correct me if im wrong)

02-09-2012, 10:50 PM	#2
hugger6933 Registered User Join Date: Oct 2008 Location: Marianna Arkansas Posts: 7,263	Re: BB W/ TH400 tailshaft length? I think it was the "short" shaft if I get time I'll look under mine. Is'nt the short shaft like 4-6 inches?

02-10-2012, 07:20 PM	#3
MadnessBigBlock Registered User Join Date: May 2008 Location: Neche, North Dakota/Winnipeg, Manitoba Posts: 605	Re: BB W/ TH400 tailshaft length? Thanks if you get time please measure it and let me know thanks again Brett! Posted via Mobile Device

02-21-2013, 08:14 PM	#4
MadnessBigBlock Registered User Join Date: May 2008 Location: Neche, North Dakota/Winnipeg, Manitoba Posts: 605	Re: BB W/ TH400 tailshaft length? any able to measure this for me? thanks, brett.

02-21-2013, 10:28 PM	#5
brad_man_72 the boat guy Join Date: Jul 2007 Location: springfield mo Posts: 2,339	Re: BB W/ TH400 tailshaft length? If its the short shaft the trans yoke will be 5.5" center of joint to end with a .5" counterbore. Posted via Mobile Device __________________ 67, swb, fleet, tach, throttle, 5.3, 4l60e, 3.73's, fuel cell, 5 lug, p.d.b., 4-6 drop. great little truck 66, stevens drag/ski 18' silouette, 350, 2.02 doublehump heads. comp extreme marine 278 cam, vette 7 fin valve covers, old polished edelbrock intake, velvetdrive, casale v-drive, adj cavitation plate. 28, model a rpu project,

03-10-2013, 08:55 PM	#6
MadnessBigBlock Registered User Join Date: May 2008 Location: Neche, North Dakota/Winnipeg, Manitoba Posts: 605	Re: BB W/ TH400 tailshaft length? Anyone know the factory tailshaft length on th400 with big block in front? Posted via Mobile Device



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