Thread: 700r4 dipstick tube

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Originally Posted by TomJ

What is the minimum length (heigth) a trans dipstick tube can be?

Tom,
If, like Astroracer says, you're simply asking how short you can cut the tube it only has to be long enough to contain any OEM "zig-zag" that's at the top of the stick to hold it straight, a couple of inches or so. Just shorten it as noted in several of the posts here to keep your level marks straight.

Thanks guys. I have one of the braided stainless lokar types now and want to clean up the firewall some. I want to put a stock tube on and cut it back to have not too much protrude past where it mounts to the bellhousing. I thought maybe the trans pushed oil up the tube while running. I see some racing rules require a locking dipstick so as the dipstick cant be thrown out of the tube.

Originally Posted by TomJ

Thanks guys. I have one of the braided stainless lokar types now and want to clean up the firewall some. I want to put a stock tube on and cut it back to have not too much protrude past where it mounts to the bellhousing. I thought maybe the trans pushed oil up the tube while running. I see some racing rules require a locking dipstick so as the dipstick cant be thrown out of the tube.

Tom, the transmission can indeed push oil up the tube under high loads, like a high rpm shift. I think that I'd opt for one of the locking dipsticks if I were going super short, and I hadn't thought before about needing to keep some form of tube bracket/brace that usually attaches to a bellhousing bolt to keep the tube in place. Without that the whole tube could blow out of the tranny case and blow fluid all over. Your firewall mount does that now.

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