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#685517 - Tue Oct 12 2010 07:57 PM SM-420 question
64 Pete Offline
Wrench Fetcher
Registered: Mon Mar 15 2004 12:00 PM
Posts: 74
Loc: 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
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#685527 - Tue Oct 12 2010 08:12 PM Re: SM-420 question [Re: 64 Pete]
bowtiefan Offline
Wrench Fetcher
Registered: Thu Sep 30 2010 09:10 PM
Posts: 149
Loc: Greenwood IN
Pete
Have one in the shop - can measure it tomorrow.
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#685700 - Wed Oct 13 2010 09:30 AM Re: SM-420 question [Re: bowtiefan]
oldbluetruck Offline
Shop Shark
Registered: Fri Jan 11 2002 12:00 PM
Posts: 3174
Loc: SoCal
What is the OD unit?

TIA
_________________________
Dennis
48 3100 - my current fixer up'er (Harry)
-there is nothing stronger than the heart of a volunteer-
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#685712 - Wed Oct 13 2010 09:51 AM Re: SM-420 question [Re: oldbluetruck]
64 Pete Offline
Wrench Fetcher
Registered: Mon Mar 15 2004 12:00 PM
Posts: 74
Loc: 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
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#685749 - Wed Oct 13 2010 11:43 AM Re: SM-420 question [Re: 64 Pete]
oldbluetruck Offline
Shop Shark
Registered: Fri Jan 11 2002 12:00 PM
Posts: 3174
Loc: 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
48 3100 - my current fixer up'er (Harry)
-there is nothing stronger than the heart of a volunteer-
Top
#688117 - Thu Oct 21 2010 01:58 PM Re: SM-420 question [Re: oldbluetruck]
64 Pete Offline
Wrench Fetcher
Registered: Mon Mar 15 2004 12:00 PM
Posts: 74
Loc: 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
Top
#689651 - Wed Oct 27 2010 01:26 PM Re: SM-420 question [Re: 64 Pete]
oldbluetruck Offline
Shop Shark
Registered: Fri Jan 11 2002 12:00 PM
Posts: 3174
Loc: SoCal
Thanks for the reply.

I wish you the best with your project
_________________________
Dennis
48 3100 - my current fixer up'er (Harry)
-there is nothing stronger than the heart of a volunteer-
Top
#689838 - Thu Oct 28 2010 12:46 AM Re: SM-420 question [Re: oldbluetruck]
bigbadswingdaddy Offline
Shop Shark
Registered: Fri Dec 31 2004 12:00 PM
Posts: 2319
Loc: san francisco
4 1/2 inches back from the bellhousing.
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#690465 - Sat Oct 30 2010 08:12 AM Re: SM-420 question [Re: bigbadswingdaddy]
64 Pete Offline
Wrench Fetcher
Registered: Mon Mar 15 2004 12:00 PM
Posts: 74
Loc: 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
Top
#690492 - Sat Oct 30 2010 10:51 AM Re: SM-420 question [Re: 64 Pete]
Frank50 Offline
Shop Shark
Registered: Wed Nov 29 2000 12:00 PM
Posts: 1497
Loc: Central IL, again
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.
_________________________
Frank50
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