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#1
07-05-2018, 05:34 PM
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71 Muncie spline count
Time for a new clutch for me. I remember when I put one in 10-11 years ago there was a question on how many splines were on the 71 Muncie. I cant find my receipt from years ago, and a search turned up nothing. Anybody know?
Thanks!
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 71' GTO -original 400/4-speed/3.23 posi 13.95 @ 102.1 on street tires @ 4055lbs. 63 LeMans- 69 400 w/ original transaxle. 2.69 gears. |
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#2
07-05-2018, 06:19 PM
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26 count
__________________
Mark.. The Goat whisperer "I spent a lot of my money on booze, crazy women, and fast cars. The rest I just squandered." 
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#3
07-05-2018, 06:28 PM
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assuming my memory serves me correct:
1970 & prior are 10 spline 1971 and later are 26 spline also; 1970 & earlier use a TH350 (small) output shaft 1971 & later use a TH400 (large) output shaft The only exception to this is Muncie three speeds - they retained the 10 spline input/small output configuration. This is why there appears to be some duplication regarding engine codes; 1971-1974 engines (1971-only for Firebirds; 1971-1974 for GTO/Lemans) destined to have a Muncie three speed had a unique code - to identify which clutch assembly the engine had installed... I may be wrong because this is a guess, but I think that Saginaw transmissions retained this configuration as well.
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1970 Formula 400 Carousel Red paint on Black standard interior A no-engine, no-transmission, no-wheel option car. Quite likely one of few '70 Muncie three speed Formula 400's left. 1991 Grand Am: 14.4 @ 93.7mph (DA corrected) (retired DD, stock appearing) 2009 Cobalt SS: 13.9 @ 103mph (current DD; makes something north of 300hp & 350ft/lbs) |
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#4
07-06-2018, 10:29 AM
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Thanks guys!
I was just going to use my old receipt to order the same parts, and I always save receipts!Just cant find it. Too long ago for Summit to look it up in their system also.
__________________
71' GTO -original 400/4-speed/3.23 posi 13.95 @ 102.1 on street tires @ 4055lbs. 63 LeMans- 69 400 w/ original transaxle. 2.69 gears. |
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