1971 auto to manual swap - Pontiac GTO Forum
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post #1 of 3 (permalink) Old 03-30-2017, 10:31 AM Thread Starter
 
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1971 auto to manual swap

Hi guys. Going to do a muncie 4 speed swap into my 71 with 455 th400. Found a 661 muncie m21 fresh rebuild out of a 68 camaro. Came with levers and all but no shifter. Do I need to order a shifter lever and mount for camaro so I can use supplied levers? Not worried about keeping it original. Thanks in advance!
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post #2 of 3 (permalink) Old 03-30-2017, 03:58 PM
 
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The typical tail shaft housing on a 661 case Muncie is the one that only has 3 bosses in a triangular pattern to bolt a stamped steel mtg plate to. The Hurst shifter mounts to this. The earlier alum style mtg plate mounts differently. IF the '661 case Muncie is a mid to late '70 model transmission it should still have the small output shaft & take the same tailshaft housing (with the W bolt pattern) as previous Muncie 4sods.

Linkage rods for '71-74 Muncie 4sods were much beefier than previous linkage rods. The length though ought to be the same as '67-70 Pontiac A-body Muncie 4spd shifter linkage, I have both styles, on my list of things to do when i get my shop organized is take pictures & measure shifter rod lengths.

OEM Chevelle style Hurst 4 sod shifter has an offset to the mechanism where the flat handle bolts on, much like the '69 Camaro Hurst shifter. This Chevelle style shifter could be used in a '68+ GTO, but doubt it will work with a factory console.
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post #3 of 3 (permalink) Old 03-30-2017, 06:05 PM Thread Starter
 
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Thanks for the reply. Not using a factory console. I think I'll go the cheap route and order the camaro hurst handle since I have all the other stuff to go that route. Thank again!
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  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO Undercarriage, Frame, Transmission and Differential Discussions.

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