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01-17-2009, 07:38 AM
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#1 |
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Registered User
Join Date: Jun 2005
Location: Midlothian, VA
Posts: 148
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What fluid do I use in an '85 NP833 MY6 tranny.
I'm getting ready to convert my '72 to a three speed overdrive. Somewhere I read that this tranny (Supposedly out of an '85 truck) used automatic fluid. Now I'm confussed.
Hoping to do the convertion tomorrow, any advice?
__________________
 72 Chevy C-10 Custom LWB383 Stroker - Edlebrock Air Gap intake and 670 CFM Holley Street Avenger carb. Hooker Comp Headers w/ X-Pipe and 2.25 duals TKO-500 & 3.08:1 rear I Love HEMI's, they're soft & chewy! 
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01-17-2009, 12:00 PM
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#2 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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Re: What fluid do I use in an '85 NP833 MY6 tranny.
I'm moving this to the 73 - 87 group... I'm sure they'd know.
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01-17-2009, 12:11 PM
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#3 |
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Senior Member
 
Join Date: Jul 2004
Location: Estherville, Iowa
Posts: 3,371
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Re: What fluid do I use in an '85 NP833 MY6 tranny.
I've had a couple of these trannys, one had Dexron and the the other had regular gear lube. I think Dexron was the original fluid.
Dexron seems to thin for me, and dino 75-90 too thick when cold. Synthetic 75-90 GL5 too slippery for synchros. So the best lube IMHO would be Redline Manual Trans fluid. Thicker than dexron, buts flows well cold, and has less friction modifiers (slippery stuff) in it so the synchos can do their job.
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1968 C10 307 3spd Long Fleet ------ http://67-72chevytrucks.com/vboard/s...d.php?t=201103 1970 C10 305 Super T10 Long Fleet --- http://67-72chevytrucks.com/vboard/s...d.php?t=202285 1971 C20 383 TH350 Dana Posi ----- http://67-72chevytrucks.com/vboard/s...d.php?t=206894 2001 GMC Sierra 1500 C3 6.0 |
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