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Joined: Jun 2009
Posts: 98
J
'Bolter
'Bolter
J Offline
Joined: Jun 2009
Posts: 98
My 1949 GMC FF 350 COE eats up flywheel ring gears. Engine is a 1955 248 GMC repower.

By the looks of Jim Carters catalogue a new ring gear is 40$ No problem. (I converted from 6 volt to 12 with an alternator. Starters rebuilt with new drive.)
What I need help is which ring gear count to get as Carter offers 139,153 and 168. All seem to use the same starter drive. Presently the truck has a 139 count (maybe original?,been flipped.
Am I using the wrong tooth count causing the failure? (less teeth means more room for the bendix pinion gear to engage? Aye yi yi.

Can someone give me direction?
Thank You
John
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Joined: Apr 2005
Posts: 7,440
Bolter
Bolter
Joined: Apr 2005
Posts: 7,440
The extent of my knowledge is..... The starter drives are NOT the same. The experts will be along shortly to guide you towards success. Good luck.


Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
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Joined: Jan 2016
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S
'Bolter
'Bolter
S Offline
Joined: Jan 2016
Posts: 631
6 volt starter running on 12volts with 139 tooth ring gear is the correct combo.

12 volt starter would use the 159 ring gear.


There several prior posts on starter identification........the starter drive (shafts) are different diameters. Red and black labels.

Last edited by showkey; 12/02/2020 1:48 PM.
Joined: Jun 2009
Posts: 98
J
'Bolter
'Bolter
J Offline
Joined: Jun 2009
Posts: 98
Thank You for helping me sort this out. 70 years of previous owners repairs have kept me guessing.


Moderated by  Phak1, Woogeroo 

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