Trans options

[Duck 37]

Have a72 c10 with a 350 3 speed,has anyone ever replaced the 3 speed with a GM 5 speed.

[jocko]

yes. a 66 here, but same process. If you're gonna do burnouts, you'll need more than a T5 (OTKO or NV-type). If just gonna drive normally, T5 will be fine.
Most all the parts you'll need are listed herein. Generally speaking, the T5 pecking order is this:
- a "World Class" often denoted as a "WC" has a needle bearing for the countershaft, a little more sturdy, but not the be-all/end all.
- an S10 T5 will have the stick location fwd enough for a bench seat, however, it also requires a spacer to make up for the extra length of the input shaft (see thread - homemade, several places sell them though).
- Camaro T5 has correct length input shaft, but the stick location is too far back for a bench - and it is "twisted" around to work with a Camaro console, etc.
- Best of both worlds is a Camaro T5 with an S10 tailshaft, but generally speaking, you'd need two transmissions to do that, so easiest route (if you have a bench seat) is to go with a S10 T5 and add the spacer.
- If you go the S10 route with a spacer, will need to cut the bearing release collar a little bit (see thread) or it will interfere with the clutch fingers (no relation to Rolly).
- Astro van clutch kit is the way to go - recommend full kit, i.e. don't mix/match an Astro van clutch disk with your old chev truck pressure plate, etc. Need to maintain correct full stacked height. See thread.
Good luck! It's a good swap, makes for much more enjoyable driving.

http://67-72chevytrucks.com/vboard/s...d.php?t=482069

[Husker]

Great Info here on the T5. I am going with the S10 T5 behind my 6 Cylinder.
Ron
http://lugnutz65chevystepside.weebly.com/

[ElKotze]

Originally Posted by Husker

Great Info here on the T5. I am going with the S10 T5 behind my 6 Cylinder.
Ron
http://lugnutz65chevystepside.weebly.com/

That T5 should be perfect behind your 6 !!