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john70gmc · 05-01-2002, 10:53 PM

I have a 1970 GMC shortbed that I bought new, had a three speed in it and I changed out to a saginaw 4 speed. I also still have the two piece driveshaft. I am not pleased with the saginaw and would like to go to a muncie 4-speed: questions
Which Muncie will fit, the length is 21.5 inches.
Which input and output spline do I have (10-27?)
Anyone have any preferences on Muncies? m-20, 21 or 22?
Also I have no transmission crossmember, didn't have with 3 spd, or with saginaw 4 spd, would I need one with the Muncie?
I would certainly appreciate any suggestions.

05-01-2002, 10:53 PM	#1
john70gmc Registered User Join Date: May 2002 Location: folsom, ca, usa Posts: 1	Transmission help! I have a 1970 GMC shortbed that I bought new, had a three speed in it and I changed out to a saginaw 4 speed. I also still have the two piece driveshaft. I am not pleased with the saginaw and would like to go to a muncie 4-speed: questions Which Muncie will fit, the length is 21.5 inches. Which input and output spline do I have (10-27?) Anyone have any preferences on Muncies? m-20, 21 or 22? Also I have no transmission crossmember, didn't have with 3 spd, or with saginaw 4 spd, would I need one with the Muncie? I would certainly appreciate any suggestions.