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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: Oct 2008 Posts: 26 Apprentice | | Apprentice Joined: Oct 2008 Posts: 26 | all this talk about t5's, i couldn't stand it. i went out to the garage and looked at the tag on my t5 i bought on ebay about a year ago. wc 1351 120 looks like i got a 4 speed from what i can tell. i already cut the shaft and lengthen the splines so the clutch sldes back the same distance as the original. have i been had or is this going to work behind my 235 with a 373 rearend. cody | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | Are you sure it's not 1352- All t-5 's start with that number. I don't find anything for 120. Try to shift to 5th gear. Way over to the right & up. That's a good way to tell. If it's a 4 speed it wouldn't be worth installing with a 3.73 rear end.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | The chart shows 1352-120 was never released.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | 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 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
| | | | | 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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