I bought a T56 Magnum from D&D but now have a question. The part number is Tuet 7477 and says it's for a ls1, small block, and big block. On Tremecs site it shows that they are different transmissions for the older and the ls1 which is what I would have expected. Anyone dealt with this before so I know which engine this is actually for. I guess I need to call D&D or Tremec in the morning but I figured someone here has already dealt with this. Thanks in advance

 

An LS1 input can be adapted to SB and BB with a plate and an old style bellhousing. Hence the "fits all" description.

Yours is an LS style front with 2.66 first, .63 sixth. Keep your 91 bellhousing, hydraulic and clutch/flywheel, buy an adapter plate, measure the input so you can go w/ the correct pilot and bolt it up.

 

Want to be sure I understand. If I use this with an ls1 in my 91 camaro I would just get a regular ls1 bell housing. If I use with something like a ramjet 350 or lt1 then I need an adapter plate with correct pilot bushing. Is that correct? Also can you tell me who makes the adapter plate?

 

Yes.
Yes.
McLeod and others.
http://www.summitracing.com/search/P...sion-Adapters/

The adapter plate was used originally(?) used with an extra long input to adapt the "aftermarket" Borg Warner T56 to a traditional (including 3rd gen) bellhousing.

 

Thanks so much for clearing that up. I am kind of a newbie to doing this stuff and have allot to learn. This is such a great forum that that!! If I don't mind spending a more would I be better off with a new bellhousing instead of the adapter plate to my old bell housing or is that just a waste of money.

 

If you dont mind speending a little money, then Quick Time is worth a look. They make a bellhousing for most every T-56 swap(LT1,LS1,SBC,BBC,V-10's even Porsche tranny's), and the quality is #10 on a scale of 1-10. Its what I use for my MkIIV BBC/LS1 type and didnt requier an adapter plate(but comes with a steel scatter shield), it even made up for the added length of the LS1 input shaft without needing special pilot bearing. I use a needle bearing type but only because it has more of a tapered edge, that makes it easier to stab the tranny. They cost about $450-550. which is a little pricey for something with no moving parts, but well worth it, in my humble opinion.

 

Going to have so much in to it a little more doesn't matter. I like the idea of a scatter shield which is a necessity if I start racing. Raced back in the late 60's and love it. Not up on much of anything anymore so it's a re-learning experience.