Spartan707

Hello, 68 Olds Cutlass Supreme 2speed transmission needs rebuilt. Looking for a step by step manual or video to guide me through process. Also who makes the best master kits & torque converters... Thanks in advance

redoldsman

You should have a factory service manual which should give you everything you need. They are available on ebay. Fatsco is probably one of the best places for transmission parts.

BackInTheGame

Don't go for an el-cheapo Copy or Digital of the factory Chassis Service Manual. Many (important) pages are fuzzy to the point of being illegible.

Spend a few more bucks and get a used factory original manual, like this:


This one is a little worse-for-the-wear, and others in better shape are available. You don't have to drop a C-Note, either.

Good Luck!

joe_padavano

You're going to find information and parts for the ST300 are hard to come by. The CSM is mandatory. I've not seen an ATSG guide for the ST300, unfortunately. Fatsco is one of your better sources for parts.

Here's their parts list for the ST300

Spartan707

Thank you to, redoldsman, Joe padavano, BackinTheGame I for the info provided. Will get manual suggested & go from there. Cool site. Appreciate info. Be safe

BangScreech4-4-2

If the the car is intended to be a driver rather than a concours restoration, you might consider a THM 350 swap. It can significantly improve the fun-to-drive factor.

matt69olds

That was going to be my suggestion as well.

Hard to beat the overall drivability of a 3 speed over the 2 speed. The added first gear makes the engine feel like it has 50 hp more, with zero trade off.

Spartan707

Will see how much swp will cost vs rebuild..... TKS again

matt69olds

If you have a core to build, I bet there isn’t much difference in price, and much easier to find parts and service info.

In my opinion, even if the 350 trans cost 3 times as much to build, the overall enjoyment would be well worth the money.

BangScreech4-4-2

In my area a used, fairly low-mileage B-O-P 350 goes for $2-400 and a rebuilt one by a reputable builder fetches about a grand -- that's CDN$.

Spartan707

Appreciate info

oldsmobuser

Hello Spartan 707, I have a 1968 Olds Cutlass Supreme Holiday Coupe which I removed the ST300 years ago,(1992), and Installed a TH350. It made a big difference in the cars acceleration and overall driveability. I still have my ST300, which I will keep. I have a rebuild kit and e few filters and pan gaskets in case I put it back on. It worked fine when I pulled it off but I wanted a 3 speed. If you can, you might want to splurge and go with a 200-R4 4 speed. You would have good acceleration and cruise at low RPM.s on the freeway and spend less on gas. Take care and good luck.