bell housing?

[rick0312]

I recently purchased a 3 speed tranny with a 4 5/8" bearing support. My old bell housing has a larger hole...about 5 1/8". Bolt holes line up fine, but bearing support hole is too large for new tranny. I think I need a new bell housing? If so, any insight on where i can purchase a 4 5/8" bell housing that will accomadate a 11" clutch, or could I still use the old bell housing?

[rick0312]

can i use my original bellhousing even though there is some space between bearing suuport and bellhousing?

[LockDoc]

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I think you could if you are not going to be racing it or beating it too bad. I think I would try and find a machinist to make me a press fit adapter ring to go into the bell housing.

LockDoc

[prg machine]

It would be cheaper just to find the right bell housing........don't......I repeat don't run with that oversize bore..............your front bearing in the trans will be destroyed in short order and then you will wish you found the right bell. They should be easy to find.

[69rut]

Have you tried to swap the bearing supports?

[Green Machine]

Assuming you want to keep the cast bellhousing for the side mounts, I think 1967 and earller had the smaller hole. You can purchase (i think) an adaptor ring or have one made, do not run with out the correct setup here, the tranny bolts will not center the tranny good enough to the clutch and will cause problems.

[prg machine]

Originally Posted by 69rut

Have you tried to swap the bearing supports?

The bearing supports correspond to the transmission input bearing that they belong on. Don't swap this out or youi open a whole nuther can a worms. Don't fool around here just get the right bell

[prg machine]

Originally Posted by Green Machine

Assuming you want to keep the cast bellhousing for the side mounts, I think 1967 and earller had the smaller hole. You can purchase (i think) an adaptor ring or have one made, do not run with out the correct setup here, the tranny bolts will not center the tranny good enough to the clutch and will cause problems.

there are plenty of the pre 67 bell housings with the side mounts. Just find one and it should cost less than even talking to a machine shop.I have picked em up for as little as 10 bucks in wrecking yards. Unless you have some personal attatchment to that particular bell housing give up and get the right one.

[prg machine]

I must be missing something here...................but isn't that first picture the correct bellhousing? Why not use it?

[Wrenchbender Ret]

The 435 4 speed came out in 68 & used the larger hole. An older bell housing or a 3 speed will fit providing it,s for the large flywheel.

[rick0312]

I have two trannys and one bell. the rebuilt tranny has the smaller support bearing. the older tranny fits perfect, but needs a rebuild. was hoping to reuse my old bell, but it looks like I will be seraching for the small bore size.

[rick0312]

So if I am understanding corectly I need a pre- 67 bell housing, with the side mounts. I am using an 11" clutch, so will any pre 67 bell that cam off of a sbc V8 be ok for the clutch size i am using?

[Green Machine]

Originally Posted by rick0312

So if I am understanding corectly I need a pre- 67 bell housing, with the side mounts. I am using an 11" clutch, so will any pre 67 bell that cam off of a sbc V8 be ok for the clutch size i am using?

I think the break is 67-68, so look for a 67 or older, all the 6 banger housing I have seen are the same as small block too.

[rick0312]

thanks!