Hi all,

Well I finally finished my Th350 install... I drove it for the first time today. It has a Trans-go stage II shift kit. It shifts good & firm through the gears. although the 2-3 shift isn't as firm as I thought it would be.

I also installed a Hayden 6-row cooler. I think I might have the cooling lines reversed. So my question is... which line on the radiator is the inlet & which is the return line to the trans.?

Thanks to all for all your help & support.


Thanks,
Mark P.

Cool! New Trans graemlins/thumbsup.gif I hope you like that extra umph off the line.

Anyway, if I remember, the bottom line out of the trans is the hot oil to the radiator. It should go into the top of the radiator, then out the bottom. From the bottom of the radiator it should go to the top of the external tranny cooler (if there is a top), then from the tranny cooler back to the tranny inlet which should be the top fitting.

The top/bottom thing with the radiator and tranny cooler isn't really that big a deal, so I wouldn't sweat it if they are backwards. the important thing is radiator first then external cooler.

Hope this helps.

Thanks for the reply Eric,

So far I'm pleased with the way the new Th350 performs. Nice firm shifts. I'm glad I did the swap. It seems like the car picked up 20hp or so... and that's with a tired 327/210hp 2bbl. engine.

One thing I noticed was that with the better performance is the weakness of my car's 4 wheel manual drum brakes! :eek:

A front drum to disk conversion just went on my project list... :D

Mark P.

Yup, next thing I did after my TH350 swap was to put in some disks! Congrats.

Imagine that! I put a TH-350 into my 67 RS about 1 1/2 years ago and now I have it up on blocks putting in power discs, plus all new PST bushings, ball joints, tie rods, Eaton springs, etc. That must be the natural evolution of things, eh? Get it going really well and it quickly points out how poor the old non-power drums are!

K-2

Hey Granny? If ya wanna chirp the tires and make the trans run a little cooler the next time you change your trans filter refill with TYPE F trans fluid. F= friction modifier. Should pull the dashe off the frame when going in to second :D :D graemlins/thumbsup.gif

Congrats on getting it running.
AS LB stated, Type F will make it run cooler and shift alittle firmer.
The 1-2 shift will be firmer, but, 2-3 shift will be normal.

The top radiator cooling line is the return to the trans. Your ext cooler should be horizontal and fill up from the bottom and return to the trans being on the top.

Thanks for the info Everett,

My External cooler is spliced into the top radiator cooling line & mounted horizontally.

I will double check the routing of the Top radiator return line to make sure it goes into bottom inlet of the ext. cooler.


Mark P.

I was talking to a reputable trans builder and he was saying that Type F can lead to varnish buildup in the trans. Supposedly Dextron III has 3 additives and Type F has only 2 of the 3 so I thought Type F would be missing something . . . anyway the conversation got a little over my head. Just came away with the impression that Dextron was a better choice. He puts Dextron in rollerized C-4 transmissions :rolleyes: go figure.

I just now got around to doing a drum to disc swap. I've had the TH350 and 383 engine for almost 3 years now . . . I can tell you its a good upgrade and worth the expense. Now that the disc upgrade is complete, I need shoulder harnesses to keep me from smacking my head on the wheel when I stop hard.