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Fixing the old truck

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SM-420 question #685517 10/13/2010 12:57 AM
Joined: Mar 2004 Posts: 77 Pa 6 64 Pete 'Bolter
64 Pete 'Bolter 6 Joined: Mar 2004 Posts: 77 Pa	Hi, I was hoping someone has an SM420 laying around and could measure from the front of transmission to centerline of shift tower. My SM465 measures 5 1/2". The SM420 is 10 1/2" overall, and the SM465 is 12"long. (http://advanceadapters.com/resources/964/Manual-Transmissions.html) Just trying to get an idea of shifter hole location with added length of OD unit. Thanks. Pete Pete Geurds 1961 Chevrolet 1-Ton Panel Truck

Re: SM-420 question 64 Pete #685527 10/13/2010 1:12 AM
Joined: Oct 2010 Posts: 111 Greenwood IN B bowtiefan Wrench Fetcher
bowtiefan Wrench Fetcher B Joined: Oct 2010 Posts: 111 Greenwood IN	Pete Have one in the shop - can measure it tomorrow. Dan 1948 Chevrolet Thriftmaster In the Stovebolt Gallery More pix on Photobucket My Blog about the Rebuild Whetzel Trace Travelers

Re: SM-420 question bowtiefan #685700 10/13/2010 2:30 PM
Joined: Jan 2002 Posts: 2,254 SoCal O oldbluetruck 'Bolter
oldbluetruck 'Bolter O Joined: Jan 2002 Posts: 2,254 SoCal	What is the OD unit? TIA Dennis -there is nothing stronger than the heart of a volunteer-

Re: SM-420 question oldbluetruck #685712 10/13/2010 2:51 PM
Joined: Mar 2004 Posts: 77 Pa 6 64 Pete 'Bolter
64 Pete 'Bolter 6 Joined: Mar 2004 Posts: 77 Pa	Originally Posted by oldbluetruck What is the OD unit? TIA Dennis, I'll be using one of these Overdrives from Advance Adapters. Goes between Bellhousing and transmission. Moves everything back 7 3/8" (they say 7 1/2") see: http://advanceadapters.com/product/1941/760002M-27.html Note: Cheaper thru Summit Pete Pete Geurds 1961 Chevrolet 1-Ton Panel Truck

Re: SM-420 question 64 Pete #685749 10/13/2010 4:43 PM
Joined: Jan 2002 Posts: 2,254 SoCal O oldbluetruck 'Bolter
oldbluetruck 'Bolter O Joined: Jan 2002 Posts: 2,254 SoCal	Thanks. Would this be cheaper and easier than rear gears from Patrick's? It shows to be 80 pounds. Would a brace be needed? And the shifter would be pushed back. Are you going to modify the shifter or simply have the shifter closer to the seat? Thanks for the information. Dennis -there is nothing stronger than the heart of a volunteer-

Re: SM-420 question oldbluetruck #688117 10/21/2010 6:58 PM
Joined: Mar 2004 Posts: 77 Pa 6 64 Pete 'Bolter
64 Pete 'Bolter 6 Joined: Mar 2004 Posts: 77 Pa	Originally Posted by oldbluetruck Thanks. Q. Would this be cheaper and easier than rear gears from Patrick's? I have a 1 ton so I'm not going to find gears too easily. Q. It shows to be 80 pounds. Would a brace be needed? Advance Adapters advised going to a crossmemnber and avoid the bellhousing mount. Q. And the shifter would be pushed back. Are you going to modify the shifter or simply have the shifter closer to the seat? Truck will have separate seats but probably still need to do something to lever. Thanks for the information. Sorry this took so long. Pete Geurds 1961 Chevrolet 1-Ton Panel Truck

Re: SM-420 question 64 Pete #689651 10/27/2010 6:26 PM
Joined: Jan 2002 Posts: 2,254 SoCal O oldbluetruck 'Bolter
oldbluetruck 'Bolter O Joined: Jan 2002 Posts: 2,254 SoCal	Thanks for the reply. I wish you the best with your project Dennis -there is nothing stronger than the heart of a volunteer-

Re: SM-420 question oldbluetruck #689838 10/28/2010 5:46 AM
Joined: Dec 2004 Posts: 1,897 san francisco B bigbadswingdaddy Shop Shark
bigbadswingdaddy Shop Shark B Joined: Dec 2004 Posts: 1,897 san francisco	4 1/2 inches back from the bellhousing.

Re: SM-420 question bigbadswingdaddy #690465 10/30/2010 1:12 PM
Joined: Mar 2004 Posts: 77 Pa 6 64 Pete 'Bolter
64 Pete 'Bolter 6 Joined: Mar 2004 Posts: 77 Pa	Originally Posted by bigbadswingdaddy 4 1/2 inches back from the bellhousing. Thanks for the measurement. Looks just swapping the SM-465 in place of a 420 moves lever back 1", plus the 7 1/2" for the OD unit. Now I'll have to see how putting in a 292 effects driveline location. Pete "Measure several times, cut once. I hope!" Pete Geurds 1961 Chevrolet 1-Ton Panel Truck

Re: SM-420 question 64 Pete #690492 10/30/2010 3:51 PM
Joined: Nov 2000 Posts: 1,927 Roane, TN F Frank50 'Bolter
Frank50 'Bolter F Joined: Nov 2000 Posts: 1,927 Roane, TN	I followed the link to the advance site. Very interesting item. At 27% reduction that's a nice O/D. I did not see the price on that page. How do I see the price? I also saw that they are saying out of stock until 12-1-10. Do they offer that with the smaller bearing retainer to fit in front of a SM-420? Good luck. Keep us informed about how this works in your Panel truck. Oh, and pictures! We love pictures. Professional Novice

Re: SM-420 question Frank50 #693031 11/08/2010 7:37 AM
Joined: Mar 2010 Posts: 10 Florida R RocketRay New Guy
RocketRay New Guy R Joined: Mar 2010 Posts: 10 Florida	Excellent, You've inspired me! Been looking to do same. Several months back, I snagged a Power Torque Industries cast iron version of this OD unit with thought of also placing in front of my SM420. I have the add'l task of re-swapping back in my 3.90 ring/pinion. How did you go about modding the driveshaft? 1960 Chevrolet Apache 10 Short Fleet black 1995 Chevrolet Silverado 1500 Z71 RCSS black 1963 Oldsmobile Starfire Coupe black/black 1965 Oldsmobile Starfire Convertible teal 1965 Oldsmobile Starfire Convertible white 1965 Oldsmobile Dynamic 88 Convertible sand 1965 Oldsmobile Dynamic 88 Convertible red

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