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02-27-2003, 11:55 PM
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#1 |
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Registered User
Join Date: Feb 2003
Location: sw
Posts: 341
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4 speed trans
I am building a 69 4x4 truck . Did this come w/ a sm465 trans , is this a good trans ?
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02-28-2003, 12:22 AM
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#2 |
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Registered User
Join Date: Jun 2001
Location: Houston, TX
Posts: 126
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I don't know if it came with a sm465. If I had to guess, I'd say it came with a sm420.
Both are great transmissions. Keep oil in it and that's really all you have to do to make it survive. -- Mike
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http://home.houston.rr.com/chevy73/ |
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02-28-2003, 01:08 AM
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#3 |
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Registered User
Join Date: Feb 2003
Location: The Rubber City
Posts: 5,498
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My 69 GMC has the SM465. I think the difference between the two is that the -465 has a hump on the drivers side and the -420 has a hump on the passenger side. Feel free to correct me if I'm wrong.
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1969 GMC K2500  1996 Honda Accord 2007 Kawasaki KLR 650 |
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02-28-2003, 01:11 AM
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#4 |
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Registered User
Join Date: Jun 2001
Location: Houston, TX
Posts: 126
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The 420 and 465 are not the same internally - the 465 is a slight evolution of the same basic design.
The 420 has a fist gear in the 7's. The 465 is 6.55. 420 is somewhat smaller. -- Mike
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http://home.houston.rr.com/chevy73/ |
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02-28-2003, 01:43 AM
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#5 |
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I need another Barley Pop
Join Date: Feb 2001
Location: Grants Pass, OR
Posts: 1,629
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The 465 also has a webbing or finned casting on the sides of the case where the 420 does not. I think that 67 was the last production year for the 420 (with some carry over in 68).
If reverse is towards the driver and down, it's an SM420. If it's towards the passenger and down, it's an SM465.
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67 Short Fleet 4x4 04 Honda CRF450R 89 Toyota 4-Runner 34 Ford 2 door sedan - Long term project ---------------------------------------------- There is a very fine line between "hobby" and "mental illness" 
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02-28-2003, 09:51 AM
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#6 |
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Registered User
Join Date: Oct 2000
Location: St. Johns, Arizona
Posts: 2,660
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My '69 has a 465. So does my '68. I don't think any of the 420's made it to '69.
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my 2¢ - t.i.o.l.i. Bowen 1968 K20 fleet 1969 K10 swb fleet 1972 K10 Suburban 1972 C10 lwb step 1992 K1500 'burb 1995 K2500 'burb 1997 C1500 'burb 1999 K1500 2000 K1500 'burb Why do I own so many Suburbans? |
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03-01-2003, 01:12 AM
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#7 |
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Senior Member
 Join Date: Feb 2003
Location: WIS
Posts: 1,752
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1969 has m465 tranny & rockwell xfer case. That's why the xfer case lever is on the left side of the hump. The np205 xfer case shift lever is to the right of the tranny lever.
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03-06-2003, 04:48 AM
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#8 |
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Young Gun wth Fast Inline
Join Date: Jan 2002
Location: Idaho
Posts: 1,475
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They stopped putting the sm420 tranny in in 1967. I have never seen on in a newer truck factory. The sm465 was used into the mid ninties with heavy duty trucks
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1967 Chevrolet LWB with built 292! 415 ft. lbs of torque, 4 speed :O with 27% overdrive too, 3.73 Posi. Frame and body done... getting painted!!! |
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