Tranny slip-OR-Stall to big?

SpoolingTurbo6

SpoolingTurbo6

Donating Member
How do you know if you installed a really loose converter? Or if it's the tranny is slipping?
I had a Dayco That I imploded a few weeks ago! So a had a local place restall a converter to 2,800rpm. I just told him I needed a loose converter, as close to 3000 you can go with a 12". Since there are no 3000 rpm 12" !!!!!! And didn't have the money right now for a 10" 3000.

So after putting it back in and fixing a leak,yada,yada,yada
drove it a couple a days before getting into it. But when I did it really felt loose.... like
2 psi @ 4000rpm and 50 mile an hour, just didn't feel like it was all there! If I lock up the converter manually (push button) in hand, sometimes at the right time it pulls like MAD!

If I hit the button right after 2nd gear.... It just does 2-3-0D real fast
If I'm in D and hit the button part ways through 2nd gear it seems to do the best !?#%$@

I could do the lockup in the chip but it's never consistent. It just seems strange to me

So any insight would be appreciated
Thanks
Tyson
 
Last edited:
jwaller

jwaller

Evil Genius/SyTy Guru
Re: Tranny slip-OR-Stall to big?

locking the conv will tell you whats going on with the trans or the converter.
it's not a good idea to restall tha conv that hig. your asking for trouble(the guy who did it should have told you that)
 
jwaller

jwaller

Evil Genius/SyTy Guru
Re: Tranny slip-OR-Stall to big?

I was told that in order to get that kinda stall out of those converters the fins had to be bent/clipped so much that it weakened them way too much esp for the amount of torque our engines produce.
 
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100in6

100in6
Re: Tranny slip-OR-Stall to big?

do you have datamaster? if so tell me what rpm you're shiftin into 3rd from second at wide open. if you're dropping below the converter efficiency you will slip it and probably lose boost too. i have no experience with a 12 inch. i would listen to john on this one. are you running a stock turbo or bigger. bigger will only make it worse if you can't spool it.
 
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