Kace

O.K. let's hear it. Thinking about doing a auto swap to a Tremec 5 speed. I know I need a pedal assembly but is anyone aware of any other major mods that will need to be done? Found a company Silver Sport transmissions says does direct conversions.

Kace

Sorry guys, it's for a 68 442

joe_padavano

Oldsmobile did not drill the crank for a manual trans pilot bearing on cars that came from the factory with an AT. You will either need to pull the crank out of the engine to have it machined or you will need to use an aftermarket conversion bearing. These aftermarket bearings fit into the small recess in the crank for the torque converter pilot. The problem is that the tip of the manual trans input shaft will bottom in the crank unless you either shorten the input shaft or drill a clearance hole in the crank. Since this hole is for clearance only, it does not need to be precisely machined as it would for a factory pilot bearing, so is is possible (though difficult) to do this with the trans in the car.

Also be aware that many places that refer to "direct conversions" are usually referring to Chevies and don't necessarily understand that Oldsmobiles are different.

Funkwagon455

The transmission tunnel will need to be modified to gain clearance for the gearbox. I'm pretty sure that your conversion supplier will either offer a replacement trans tunnel, or can probably reccomend a vendor to make the process as easy as possible with professional results. I do know that if you use the replacement panel, no modifications are required for the factory console should you have one. I did the conversion in '99 to a G body I used to own, the fun factor increased ten fold.. Good luck

z11375ss

Before Keisler went under they were making a trans swap kit that required no tunnel modification. I think it was called the SS700. These are the guys who took over Keisler. I changed my car over to the TKO600. It's the best thing I've done and would do it again in a heartbeat.
https://shiftsst.com/articles/cat/ge...ody-1968-1972/

1971 442 convert

The way I understand it from Silver Sport is that the Legend LGT-700 requires no tunnel modification (which may be the Keisler product ?) I was looking at this but have not made the decision yet as our dollar up here blows LOL