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Old 01-31-2013, 01:55 AM   #1
alwaysbroken
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Join Date: Dec 2010
Location: sooke canada
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quick spline help!

i got a 1979 gmc 3\4 ton with a 10 bolt front end (thought it was weird) 14 bolt ff back.. long box with a turbo 350 and a 205 with a slip yoke, im just trying to figure out if its a 10 spline tcase or 32.

anything would help thanks
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Old 01-31-2013, 04:29 AM   #2
Chevymaniac
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Re: quick spline help!

4 spd maual is a 10 spline
TH350 is a 27 spline
TH400 is 32 spline

I think 79 was the year GM starting putting 10 bolts instead of the dana 44's.
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Old 01-31-2013, 10:24 AM   #3
alwaysbroken
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Re: quick spline help!

Oh I didn't know there was also a 27 spline.. I guess that will be why it's clip yoke to. And yea the 10 bolt is odd cause my 76 half ton has a true 44 In it, that all makes sense now
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Old 01-31-2013, 12:33 PM   #4
kwmech
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Re: quick spline help!

10 bolt front ends started in 78 I think
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