3-speed trans ID - The 1947 - Present Chevrolet & GMC Truck Message Board Network

chris1044 · 06-06-2015, 10:00 AM

Trans in my truck needs an output shaft seal, and I'm trying to positively ID it. Looks exactly like this:

http://67-72chevytrucks.com/vboard/s...d.php?t=539846

Muncie SM-318?

Three on the tree, can't read the GM casting numbers on the main case other than:

GM
22
8437____
______

Thanks!

66Submarine · 06-06-2015, 11:38 AM

Sm318

chris1044 · 06-06-2015, 12:21 PM

Gracias!

cv65 · 06-06-2015, 06:13 PM

might help http://content.chiltonsonline.com/co...RUCK_p2432.pdf SM318

06-06-2015, 10:00 AM	#1
chris1044 Registered User Join Date: Jul 2014 Location: MI Posts: 56	3-speed trans ID Trans in my truck needs an output shaft seal, and I'm trying to positively ID it. Looks exactly like this: http://67-72chevytrucks.com/vboard/s...d.php?t=539846 Muncie SM-318? Three on the tree, can't read the GM casting numbers on the main case other than: GM 22 8437____ ______ Thanks!

06-06-2015, 11:38 AM	#2
66Submarine Registered User Join Date: Sep 2012 Location: Dallas, GA Posts: 1,497	Re: 3-speed trans ID Sm318 __________________ 1965 C30 pickup 350/SM420/4.10's (daily driver) thread 1968 Impala 4 door sedan (future driver project) thread

06-06-2015, 12:21 PM	#3
chris1044 Registered User Join Date: Jul 2014 Location: MI Posts: 56	Re: 3-speed trans ID Gracias!

06-06-2015, 06:13 PM	#4
cv65 Registered User Join Date: Jan 2015 Location: usa Posts: 335	Re: 3-speed trans ID might help http://content.chiltonsonline.com/co...RUCK_p2432.pdf SM318 Last edited by cv65; 06-06-2015 at 06:16 PM. Reason: add info

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