I've got a '64 a100 van with a 225 & an early 727 (with the cast iron adapter plate). It's been shifting erratically, & rough shifting. I've checked the adjustment on the kickdown rod, fluid level, etc. and just did pressure tests of the line pressure & the front servo line pressure. The trans. was rebuilt 6000 mi. ago. FSM recommends line pres. of 54-60 psi @ 1000 rpm in direct while at oper. temp. I got 80-90 psi. with the front servo a few pounds above that. Thoughts?? The rebuilder said you want 80-90 psi. All of this started when I changed out the radiator to a stock unit from a mustang II radiator. (don't ask).

I'm changing the fluid and filter now, and adjusting bands, should I adjust line pressure as well?

Tom

Do you have a stand alone trans cooler or does the ford radiator have a trans cooler on it? I had the same problem with my work truck and the cooler was not working and over heating the trans.... just a thought

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Raymond Flynn
Registered Six Offender!!!!

Both the Ford and the original Dodge units used integral coolers in the radiators.

Is the mustang Radiator new,or did you get it used from the junk yard?did you flush the tran cooler?

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V8?? We don't need no stink'n V8!!

The mustang radiator was new, installed it on a road trip when I was overheating. The rad. shop flowtested mine & said no, The mustang one was the only one they had that fit in the doghouse so I stuck it in my Dodge. worked fine for a few years, but ran a little hot in stop & go traffic, so I just had my stock rad. recored. When I installed the recored stock rad last week, this trans problem popped up. don't know if it's just a coincidence.
Really interested in the line pressure though. (is it too high?)
Just adjusted the bands to FSM spec. (it tightened them up)
When I drained the fluid, it was pretty shimmery & metallic looking.
When I pulled the pan, there was a good sized amount of gritty metallic mud on the pan & the filter looked pretty dirty.
Changing filter and putting in new fluid now.
Any other suggestions?

Asking a simple question did you flush the trans cooler in re-cored radiator?

Richard

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Part of Tyrde-Browne Racing