Auto To Manual Swap

[njdevi11]

I'm not an auto guy. My rig has a Turbo 400 in it right now, I know its a great transmission and all but I Have a friend who's converting his k5 blazer to a divorced transfer case. So he had an sm465 mated to an NP205. Now he swaped in a 4x2 sm465 and divorced 205. So the 4x4 trans and tcase is just sitting in his back yard looking for a new home. It needs a clutch and some love.

Has anybody swapped auto's for manuals before? I have the 6.2 so its all mechanical no computers to deal with. I have the bell housing and everything, all ready to go, I just don't know if my fly wheel will bolt up to the clutch.

[bulldogchance]

The flywheel from the 400 auto is a flexplate, you will need a flywheel for a 6.2.

[njdevi11]

Um... What?

I have a 6.2, Are you saying i need a flywheel from a 6.2 with a manual? Whats a flex plate?

[bulldogchance]

Yes you will need a flywheel from a 6.2 that had a manual trans. A flex plate is like a flywheel but the clutch and pressure plate will not bolt to it.

[njdevi11]

Ok, the flex plate appears to be the same as the flex plate ive seen on 350's, since they share the same bell housing will a manual sbc flywheel work? for that matter a bbc or a 6.5?

[bulldogchance]

Ok, the flex plate appears to be the same as the flex plate ive seen on 350's, since they share the same bell housing will a manual sbc flywheel work? for that matter a bbc or a 6.5?I thing you are going to need a flywheel from a 6.2 maybe 6.5 I do not think one from a gas motor will work.

[njdevi11]

I see the difference now. This makes sense, The flywheel for the 6.2 6.5 is 139 teeth. Autozone sells them for $50. Ill have to buy a new clutch, fork, cylinders and hose.

I heard that the gas bell housing is different then the diesel. Something about the starter nose not fitting in. If this is the case is this a problem that can be solved by a little bit of grinding?

I'm definitely a fan of the extra drive shaft length ill pick up in the back and the 6.6:1 granny low first gear for crawling.

[njdevi11]

Can i get a gasser flywheel and replace the 168tooth ring gear with the 139 tooth ring gear, I looked up parts online and i found the ring gear for the auto/manual/gas/diesel all have an internal diameter of 13.268. It might be much easier for me to find a gasser clutch setup and just swap the ring gear. Is this possible?

[Garth J]

starter wont engage properly then

[njdevi11]

Why? Is there a difference in the spacing? What exactly is the problem with that?

[tinderbox427]

I want a GM 6 speed in mine, but I need to get everything together. Other than a computer what els do I need.:confused:

[njdevi11]

The NV4500 is a 5 speed.
The New Allison 1000 is 6 speed with 2 overdrives.

What exactly are you looking for? I started this thread looking to go the other way, From an automatic to a manual. There's another thread on mating an allison 1000 to a 6.5 I think it stopped at us not being able to find the standalone controller for it. Actually one company said it as still under development.

[njdevi11]

I got myself a used flywheel from a 6.5 and a clutch.
I got a muncie sm-465 4 speed and np205 Transfer case.
I got all the clutch linkage (mechanical linkage) and fork and spring and a new throwout bearing.

My jeep has pedals for a mechanical clutch linkage (which is kinda weird because it has a column shifter) So I need to mount the z-bar so I can run the mechanical linkage. It should be fun, I'm going to start pulling out the old trans and putting in the new one soon, Pictures to follow.