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| | | | Joined: May 2005 Posts: 323 Shop Shark | | Shop Shark Joined: May 2005 Posts: 323 | Can anyone help me id my tranny in my 1957 6500? It is a 4speed with a 2speed rear end and a pto. The shift pattern is 1 3 R on top and
2 4 on bottom
Last edited by tri5trucking; 08/31/2016 6:56 PM.
| | | | | Joined: Mar 2004 Posts: 6,214 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 6,214 | If you really have reverse to the right and up, you have a New Process 5-speed and Granny is to the left and up! New Process 5-speed pattern (optional in 1957) 1-2-4-R ..3-5 GM SM-420 4-speed pattern (standard issue) ...1-3 R-2-4 Dots/periods are just page space holders to keep the numbers liner up correctly... Mike B  | | | | | Joined: May 2005 Posts: 323 Shop Shark | | Shop Shark Joined: May 2005 Posts: 323 | Thanks Mike, looks like I have some worn gears in there so time to pull and rebuild or find another. | | | | | Joined: Mar 2004 Posts: 6,214 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 6,214 | So whats the answer...do you have the SM-420 or something else??? SM-420 will only have one PTO location (drivers side), the NP will have one on each side. Mike B | | | | | Joined: Nov 2010 Posts: 1,159 Shop Shark | | Shop Shark Joined: Nov 2010 Posts: 1,159 | | | | | | Joined: Jan 2008 Posts: 4,962 'Bolter | | 'Bolter Joined: Jan 2008 Posts: 4,962 | If you have reverse toward the dash, its a New Process 540 or 541. 1st is right next to 2nd and in kind of an awkward position. I drove one for 5 years. You may have a 5 speed and just haven't found 1st gear. | | | | | Joined: Jun 2011 Posts: 5,096 Crusing in the Passing Lane | | Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | And they are a great trans, you get a close ratio 4 speed with a 'granny' for starting out. I put one in an early Bronco behind a Buick 3.8 V6. Normally start out in second. 4 shift rails, so that is where each gear resides-on the end of each shift rail.
Ed
Last edited by EdPruss; 11/30/2018 8:20 PM.
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
| | | | | Joined: May 2005 Posts: 323 Shop Shark | | Shop Shark Joined: May 2005 Posts: 323 | It's the NP540. You're right, I never use 2. Most of my driving I don't use the 2 speed cause I'm not going on anything fast enough | | | | | Joined: Nov 2018 Posts: 1 Moderated | | Moderated Joined: Nov 2018 Posts: 1 | Hi. I have 1957.chevy 6500 5speed. Can not find reverse. Help. Thankyou. | | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy Kcfattts57, welcome, reverse will be in one of four positions, from neutral extreme right and up or down, or extreme left and up or down, hope that helps. | | |
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