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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Jan 2010 Posts: 210 'Bolter | | 'Bolter Joined: Jan 2010 Posts: 210 | Hey guys,
How much headache would it be to swap my 46 4-Speed Crash Box for a 50's SM420? I have access to a SM420 and would really like to get rid of the old Trans next summer. What is the model number for my 46 4-Speed? I've looked and looked and the model number has alluded me. My truck is a 1.5 ton.
Thanks
Last edited by Lend-Lease 1.5; 01/12/2015 4:06 AM.
| | | | | Joined: Jan 2010 Posts: 210 'Bolter | | 'Bolter Joined: Jan 2010 Posts: 210 | Ok, I know I should have searched first, shame on me! I'll call Carters tomorrow and ask Jimmy if they still have modified bellhousings for a SM420 in a 46 1.5. Does anyone know off hand how much the front shaft must be shortened? | | | | | Joined: Apr 2005 Posts: 242 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 242 | Call me I can help you about changing your 4 speed trans. 1-262-392-2989
Marv. | | | | | Joined: Apr 2005 Posts: 242 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 242 | Check out Tired Of Double Clutching??????? in the Driveline Forum
Marv. | | |
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