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Old 12-26-2017, 05:28 PM   #1
rsmarr1982
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Gear vendors?

Anyone put a gear vendors behind an np205? I want my 72 k20 to have overdrive , but at the same time I'm trying to keep it as stock as possible. My truck has a th350 trans . I figure the easiest would be a gear vendors overdrive.
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1969 chevy c10 lwb stepside 250 6 3 ott
1971 chevy c10 lwb 250 6 with power steering 3 ott
1972 chevy k20 4x4 350/TH350 automatic
1978 chevy Malibu 4dr 305 2bbl (all original)
1979 chevy k10 Scottsdale 350/th350 full-time 4wd(daily driver)
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Old 12-26-2017, 10:13 PM   #2
kwmech
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Re: Gear vendors?

Did one on my crew cab years ago. Not a big deal, just make sure it is out of 4wd when using
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Old 12-29-2017, 10:22 AM   #3
72Cheyenne454
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Re: Gear vendors?

I've done it twice. One in my 86 K30 and one in my dads 70 K10. Both had NP205's. Easy to do and well worth it in my opinion. Makes cruising with the flow of traffic a whole lot easier when running a lower axle ratio.

Miles
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Old 01-14-2018, 12:18 AM   #4
jocko
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Re: Gear vendors?

Quote:
Originally Posted by 72Cheyenne454 View Post
I've done it twice. One in my 86 K30 and one in my dads 70 K10. Both had NP205's. Easy to do and well worth it in my opinion. Makes cruising with the flow of traffic a whole lot easier when running a lower axle ratio.

Miles
Any special adapter needed to mate the GV to the 205?

EDIT: Ok, I think I found it, GV part # Part # 3D0205A (that's the whole kit for a 205 behind an automatic. Pricey! But I guess I already knew that. Good way to go.

Last edited by jocko; 01-14-2018 at 12:39 AM.
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Old 01-14-2018, 01:36 AM   #5
kwmech
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Re: Gear vendors?

If you buy and go to install, instead of bolting it to the rear of the t-case, install some studs first. Way easier to install the unit and a little bit srtonger and less prone to loosen up
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Old 01-14-2018, 03:53 PM   #6
jocko
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Re: Gear vendors?

Quote:
Originally Posted by kwmech View Post
If you buy and go to install, instead of bolting it to the rear of the t-case, install some studs first. Way easier to install the unit and a little bit srtonger and less prone to loosen up
Copy, thank you. No additional support (as in a crossmember) for the GV unit? Seems I never see them used, but sure looks like a hefty hunk hangin out there in space Ha. But, probably not different than the way we used to hang transmissions from the bell housing supported set-ups.
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Old 01-14-2018, 11:07 PM   #7
jocko
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Re: Gear vendors?

Thanks for all the info Miles. My 205 is original to the truck, a 72, so should be good to go.
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Old 01-15-2018, 01:20 AM   #8
andyh1956
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Re: Gear vendors?

One my buds used one of these on a truck once that he took offa Volvo at the junk yard. Lots of European cars used these.
They coulda been DN units back then but worth checking out.
Might save major coin!
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Old 01-15-2018, 02:16 PM   #9
mrtoni
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Re: Gear vendors?

http://www.airforums.com/forums/f159...its-12317.html Volvo info
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