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01-30-2015, 02:44 PM | #1 |
Registered User
Join Date: Apr 2014
Location: West Jordan, UT
Posts: 189
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Muncie SM420
Possibly a dumb question... Will a Muncie SM420 bolt to a small block 350?
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01-30-2015, 05:27 PM | #2 |
Registered User
Join Date: Oct 2013
Location: Austin, TX
Posts: 170
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Re: Muncie SM420
The simple answer is "Yes" - but look here:
SM420: (4 speed used in ½, 3/4, 1 and 2 ton trucks from 1947 to 1967). http://www.novak-adapt.com/knowledge/sm420.htm SM465: (4 speed used in ½, 3/4, 1 and 2 ton trucks from 1968 to 1991) http://www.novak-adapt.com/knowledge/sm465.htm The SM420 was the 4-speed for '67, while its replace was the SM465 which was the primary 4 speed used for the 68-72 trucks. The front bearing flange is a different size, so you need the correct bell housing for each, but assuming you have the Chevrolet bell housing for the SM420, it will bolt up to both the V8s and I6s of the 67-72 trucks. The SM420 was made for a lot of years, but only in the last year ('67) does it have a reverse back-up light switch. |
01-30-2015, 05:58 PM | #3 | |
Registered User
Join Date: Apr 2014
Location: West Jordan, UT
Posts: 189
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Re: Muncie SM420
Quote:
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01-30-2015, 09:58 PM | #4 |
Vintage 4x4s
Join Date: Sep 2010
Location: Prior Lake, MN
Posts: 4,305
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Re: Muncie SM420
They are good if you want durability and authenticity or a granny low.
They aren't so desirable for the street with the long throw shifter and wide ratios. That said, I can't wait to get a gearvendors behind one or a SM465 to split the wide ratios nicely.
__________________
67 GMC K1500 Custom- 305V6 SM420, PTO, Ram Assist, yellow (the outcast) (project period correct upgrades) 67 GMC C2500 351V6 TH400, AC, PS, PB (can't decide what to do with. Update, decided to keep and will restore ) 86 CHV K30 502 th400, apple red NEW 71 CHV K20 350 SM465, ochre (saved work truck) 71 CHV K20 292 SM465, white, tach, PTO, (future project) 72 CHV K20 350 350th, medium blue (project stocker) 01 CHV K2500hd crew, indigo blue ^3 dont run and the others don't see winter either '86 K30 Cummins "Fireside" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=649649 '71 K20 "get driveable" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=590642 '72 K20 Build Thread: http://67-72chevytrucks.com/vboard/s...=493477&page=6 |
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