Royal, I have the same engine trans in my 36 Chevy. I connected the vacuum line to the intake port and as for the "kick down" cable, I disconnected it at the valve body and plugged the hole in the case. I just manually down shift when its needed, The trans works fine, it doesnt seem to know the difference. Mitch.
I have the original 36 column in the truck, its hooked up to a steering system which I can not mention here. Some would tell you that the th350 wont up shift properly without the kick down hooked up but that is not the case that I have seen, mine shifts fine. I do have a stall converter and modified valve body as the trans was behind a mild SBC that I had in the truck previously and it works out good behind that anemic inline. It could use a bit more gear though, I plan to swap the current 2:73's for some up in the middle to upper 3 range, she strains pretty good running in the mountains. Mitch.
Here's an update to my project. The transmission was in fact a good running one. Yesterday I had the pleasure to drive her out of the garage just down the street with no problems. I just need to re-cut my driveshaft because I'm still about an inch too long. I didn't realize that I'm running air bags and when I dumped the rear it causes the driveshaft to go all the way in. Other than that it shifts fine.
So now the transmission is leaking out of the speedometer cable, looks like from the threaded part. The weird thing is that when I removed the cable to see what was wrong it immediately started leaking a lot of fluid. I didn't think fluid could come out of there? And as you can see from the picture, I don't have a straight shot in. The crossmember it's in the way.
Did you put a new seal in the adapter? The plastic driven gears wear themselves a groove , and won't keep pressure on the seal.
I did not. I did this project first to see if it was a running ******. Now that I know it works, I will change filter and maybe seal on that cable right?
It looks like you have the driven gear sleeve made out of pot metal, they wear egg shaped and let fluid p*** by the gear so a new seal probably wont solve it. You need to replace the sleeve with a steel one along with a new driven gear. The GM number on the steel sleeve is 345215, you can find them online or we have them for $18.00 plus $7.50 for USPS shipping.
it was me, Possibly. I’ve got 15,000 miles on my th350 being shifted through a three speed manual shifter I did a lot of welding and fabrication to to build a lockout set up just like a modern column shift car. Here’s the video I shot a couple years ago for guys that asked I shot this video because I believe this is really important. There are so many column shift cars out there that can remain bone stock in appearance, but the owner can enjoy an automatic. If you guys get anything from this, subscribe to the channel, because I am rebuilding this car soon, and I’ll be building my 54 Chevy truck. Was wondering how the whole turbo 350 and 250 engine worked together? I’m switching this car from a V-8 back to a six cylinder. 250 or 292. I ***umed I needed an overdrive transmission to not have it be a dog… Curious what you all have to say
I put a 283 with a PG in a '48 Chevy convert and no floor modifications necessary, so the TH 350 ought to fit. That said, we don't know how your engine is mounted, or any details, but dangling it in the hole should tell the tale pretty quick. I'd look for a PG column shift ***embly from a Chevy that had a PG, then you just need to make a link from the shift arm to the trans arm. Easy peasy.
Remember that between 1969 and 1984 the turbo 350 was used behind hundreds of thousands of GM six cylinders. That includes full size and pickups. tailshaft length isn't a big deal excpt where you are limited on space. The rear trans mount on a turbo 350 is going to be 20-3/8 from the back of the block no matter what the tailshaft length is. The output is 1 to 1 same as a 3 speed stick. still for the best comfortable highway cruise speed it comes down to rear gear ratio and rear tire size. I put a lot of miles on my 48 with a 74 250 with a Saginaw 3 speed and probably not the best rear gear ratio but pulled 20 mpg while cruising at a comfortable speed. it's getting a 292 with an AX-15 5 speed this time unless my shoulder isn't up to shifting gears.
I was originally hoping for a 292. At this point, I would be blessed just to get a 250 or a 230. I cannot find one within even hours of my house. All of them “ran when pulled“ and people seem to want an arm and a leg, I get things have gone up, but it’s crystal clear that Facebook marketplace has artificially inflated prices and taken away the kindness and “payitforwardness” Nevertheless, if I found a really good one that wasn’t seven hours away, I’m all over it! No 194. But 230 250 292. My car has 3.08 rear right now. 27 inch tall tires. I have a BOP 200 4r lined up, but part of me wonders how this 3000 pound car would feel with a 250 and a powerglide… Those powerglide slip a lot in first gear… Probably would accelerate like a Nissan Altima lol but 100 times longer (no offense Nissan drivers). Th350 eats like 45-50 hp or so I understand. Not sure it’s worth the extra gear. I have really come to love six cylinders. I can’t explain it. But I do. Perhaps it started with the 2jz in my wife’s trailer queen
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