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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!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Aug 2007 Posts: 1,859 Grumpy old guy playing with trucks, cars, and boats | | Grumpy old guy playing with trucks, cars, and boats Joined: Aug 2007 Posts: 1,859 | The T4 is only a 4-speed. an SM420 is a better transmission if you only want a 4-speed, and fits without modification. If you modify the T4 to fit, and you want to upgrade to a T5 in the future, you will either have to modify the T5 just like you did on the T4, or start swapping parts from one trans to the other.
If you build a spacer to space the transmission out from the bellhousing, you can avoid cutting the splines deeper and trimming off the pilot of the shaft.
The problems we face today can not be addressed at the same level of intelligence we were at when we created them - Albert Einstein Or with the same level of $ - Me
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