honcho
Well-Known Member
Run valvoline in all my stuff, ya run merc/dext3 in any of ya's vehicle's? I think dext3 is ok to run in727's,been awhile since I changed mine and did not write down what I put in last time,Thanks in advance
ANOTHER 727 QUESTION
- Thread starter honcho
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Dextron 3 will be fine
U can run hydraulic oil or even motor oil if u wish. Kim
famous bob
mopar misfit
good old type f - ran it in every torqueflite i`ve ever owned , 426 hemi superstock , to 505 streetcar---------------
Man that stuff shifts hard. You are a better man than me, I drained it out of my street 383 Barracuda after a few miles.
I thought a very firm shift was what we enthusiasts liked about our AT's! I was taught that a firm shift reduced the clutch slippage, thus reducing heat buildup & prolonging their life.
You were taught correctly, but how hard is hard? Try it some time. It only costs tranny fluid to try it. My 68 would go sideways about a foot or two from 1st to 2nd floored and that was with Dextron. With type F fluid it was bone jarring. Racing maybe, not for me in a street car. I'll not try it again.
Are you talking about a stock transmission doing that? Did you install a shift kit? I've used "F" for a long time and never had that experience, both with stock & transmissions built with modified innards.
Basically stock HP with mods. I'm glad yours was not as harsh. Or maybe you can tolerate the shifts better than me also.
For me, I don't like a "hard" shift like a "bang", but I like "fast" shifts for sure. A fast shift can sometimes be considered hard if there is play in the driveline (U-joints, rear end, etc.). Sometimes folks set the line pressure too high in the valve body, and that can cause some issues too.
Yeah, it was a bang for sure. It shifts fast and good. I was quite taken back when I tried "F" type fluid. Pressure was up and either 5.0 or 4.2 kickdown lever with a blocked accumulator piston. All was good when I drained the "F" fluid and put Dextron back in. I just chalked it up to "not all race upgrades are good on the street". It is an original 383 Formula S and the drive train is good.
Interesting! I too run the blocker rod in my street car. Installed the Fairbanks shift kit, which is the same one I've run in all my cars. Other folks like B&M and Transgo, so guess it depends on what people are used to. Next month I am having the unit rebuilt with heavy duty parts to handle the power of my new engine. And thanks to Kim, I now have a 4 pinion planetary in case the original only has 3.
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