I would like to hook a 67 Olds two speed auto trans to a SBC, has anyone ever done this? I would like to know what I would need to do this. Thank you!
I'm thinking that a 67 Olds has the BOP pattern and all you need is the BOP trans to Chevy engine adapter plate. I'm not sure I'd waste that much effort on a Jetaway transmission unless you are desecrating an Olds and sticking a Chebby engine in it.
The Olds used the ST300 in the midsize cars from 64-67. as far as I know see if it has a switch pitch converter...picture of the input shaft/stator support will tell us.... get the adapter to fit a BOP TH350/400 to the Chevy engine.
What Squirrel said, https://www.speedwaymotors.com/Spee...dramatic-Transmission-Adapter-Plate,3281.html
Thanks, I'm using the Jetaway trans because it is in good shape and I already have it. Now for the shocker, this setup is going in a 40 Foad.
you might want to show us a picture of the transmission, so we can see for sure what you're talking about. When you mention "Jetaway", folks who worked on late 50s GMs get kind of antsy! but that's a different transmission than the ST300. We can only guess from your limited description, what you really have.
straight off the internet fwiw: AI Overview Learn more Oldsmobile offered the "Jetaway" transmission, which was essentially a rebranded version of the GM Super Turbine 300, primarily in the mid-1960s across various models, with the most prominent years being 1964 to 1969. Key points about the Jetaway transmission: Name variation: While other GM divisions like Buick called it the "ST-300," Oldsmobile marketed it as the "Jetaway". Transmission type: It was a two-speed automatic transmission. Application: This transmission was used in a variety of Oldsmobile models during the mid-1960s.
The ST 300 is the BOP version of the Powerglide. While it is a 2 speed automatic, with a similar gear train it is very different from the Powerglide. It uses a vacuum modulator to control operating pressure and upshift points so it doesnt have any throttle linkage. It also has an electric kickdown control. All Buick versions had a convertor with a 2 position stator while only some Oldsmoblile had this option. I don't believe Pontiac ever offered the 2 position stator. The easiest way to tell is the electric connector on the transmission. If it has 2 terminals you have a convertor with a 2 position stator. One terminal means that you do not have that option. The 2 position stator almost makes it like a 3 speed transmission. They are a very robust, dependable transmission.
also from the internets, for what it's worth.... "1956-1964 Dual-Coupling/Controlled-Coupling Hydramatic — Substantial redesign of the Hydramatic. (Aka Cadillac 315/P315 HydraMatic, Oldsmobile Jetaway/StratoFlight, Pontiac Super HydraMatic)." So, some guys get a bit antsy when they hear "Jetaway".
the slim jim was the worst trans mission ever made by man. when we rebuilt them we told the oner the warenet t expired when it left the shop.
St300 is a link between dynaflow and th350. It has variable pitch stator, like dynaflow and some parts, like tail housing, interchanges with th350. Th350 was designed by buick division.
Not to step on the OP thread, but I have what I was told is a Jetaway, and it appears to not have a torque converter. I have no idea how it works or even if it is a Jetaway. some pics of my trans, it came with my 394 Olds engine.
Just curious, does that splined input shaft engage with the crank or is there something else between the two? Looks like an interesting install.
I didn't take a picture of that, but it looks like a clutch disc with no lining on it, bolted to the flywheel.
What a timely thread... Picked up a switch pitch a while back, it had the input shaft and 2 wires. Then I find out its just a ST300 with electric detent But wait, there's more! Now I find out it's a switch pitch 300! Need one not quite as cheap as yesterday? Milwaukee area. (I am told that the TH350 & the ST300 shared converters)
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