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#1 |
Registered User
Join Date: Nov 2015
Location: Colfax California
Posts: 1,644
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Where do I find used Gear Vendor over/under?
Ok so I know eBay has them sometimes, but I've heard from more than one old timer that Gear Vendor over/under drives can be found on motor homes. What I'm hoping somebody will know, is if there are certain year/make/model motor homes these came on? OR, were these guys I talked to who mentioned it referring to just any old motor home that somebody has installed a gear vendor on, which would make my search much harder and probably more expensive.
This isn't a hurry up and get it done type of thing, it's more of a side project that I'm tinkering with while I have the truck up on jackstands doing the brakes/suspension work. Any leads are appreciated or comments/ideas about doing a project like this, always welcome. The truck is a 1970 C10 LWB, 355/th400 with 3.73 mini spool, one peice driveshaft, 2wheel drive hot rod/fun truck that will be SO awesome with a gear vendor! ![]() |
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#2 |
Senior Member
![]() Join Date: Dec 2013
Location: Gods country East,Tn
Posts: 8,545
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Re: Where do I find used Gear Vendor over/under?
Have you considered a 4L80e may be cheaper in th e long run .
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![]() 1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop |
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#3 |
Registered User
Join Date: Aug 2002
Location: California
Posts: 971
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Re: Where do I find used Gear Vendor over/under?
A few years back I was really into the idea and actively searching for the correct one (although mine would need to go behind my sm465) and I called a guy I saw selling them (I think it was on Craigslist). He was out of Sacramento or close to it, very knowledgeable and honest, because with my lack of knowledge in regards to the ratios he could have sold me one pretty easily. But instead he shot my idea down! ;-0 He said I would hardly notice a difference due to the fact I'm running 3.07's.
I'll check my notes and see if I have a phone number but keep an eye on CL for someone that has more than one for sale, at the time he had like 4 or 5 listed.
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--------------------------------------------------------- I'm not crazy, I'm chosen, there's a difference. ---------------------------- '72 K10 SWB, 350, sm465/np205 ---- ---- |
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#4 |
Registered User
Join Date: Feb 2015
Location: NORCAL CA
Posts: 64
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Re: Where do I find used Gear Vendor over/under?
There's a few by me and close to you, one for a 400. I can look for you Wednesday if you contact him. Not mine
http://chico.craigslist.org/pts/5562400650.html |
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#5 |
Registered User
Join Date: Dec 2007
Location: Santa Maria, Ca.
Posts: 1,423
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Re: Where do I find used Gear Vendor over/under?
You can use any one you find and then buy the right adapter for your transmission from Gear Vendors. I don't think they came stock on any vehicles. You would gain something on any vehicle because they add 22 % to the final gear ratio but also can be shifted manually to add 22% to your other gears. They put them on the Calloway Corvette and I think it had 273 gears.
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#6 | |
Registered User
Join Date: Aug 2002
Location: California
Posts: 971
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Re: Where do I find used Gear Vendor over/under?
Quote:
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--------------------------------------------------------- I'm not crazy, I'm chosen, there's a difference. ---------------------------- '72 K10 SWB, 350, sm465/np205 ---- ---- |
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#7 |
Registered User
Join Date: Feb 2003
Location: Santa Ana, CA
Posts: 2,191
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Re: Where do I find used Gear Vendor over/under?
I have mine on my SM465/NP205/4.10 equipped Blazer with 35" tires. Makes driving the Blazer soooo nice on the freeway. An overdrive will not benefit really low gears because it will bring the rpms down too low to be in the engines power band while cruising, and the engine will bog down under load.
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#8 |
Registered User
Join Date: Aug 2002
Location: California
Posts: 971
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Re: Where do I find used Gear Vendor over/under?
Now that you say that, I vaguely recall that is what the guy I spoke with was telling me. Basically he said not worth it.
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--------------------------------------------------------- I'm not crazy, I'm chosen, there's a difference. ---------------------------- '72 K10 SWB, 350, sm465/np205 ---- ---- |
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#9 |
Registered User
Join Date: Nov 2015
Location: Colfax California
Posts: 1,644
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Re: Where do I find used Gear Vendor over/under?
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#10 | |
Registered User
Join Date: Nov 2015
Location: Colfax California
Posts: 1,644
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Re: Where do I find used Gear Vendor over/under?
Quote:
Check your rpm at cruise speeds next time you're out driving. Just because you won't be in the engines power band while driving on the freeway or anytime your in overdrive for that matter, doesn't mean you won't like it. Heck who wants to be in the power while cruising anyway? If you need power downshift lol |
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#11 |
Registered User
Join Date: Dec 2007
Location: Santa Maria, Ca.
Posts: 1,423
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Re: Where do I find used Gear Vendor over/under?
Yes it mounts to the output of the 205 mine is on a 208
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#12 |
Registered User
Join Date: May 2011
Location: Oakley, Michigan
Posts: 735
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Re: Where do I find used Gear Vendor over/under?
How does that end up working for the front axle then? Only overdrive for the rear axle? That would be a little dangerous for the forgetful folks like me. And that must also mean a pretty short rear shaft on a sb.
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#13 |
Registered User
Join Date: Dec 2007
Location: Santa Maria, Ca.
Posts: 1,423
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Re: Where do I find used Gear Vendor over/under?
It has a lock out when you shift in to 4 wheel and will not engage the overdrive. Its all in the electronics.On mine because I have a 4 in lift in a short fleet I ended up with a cv joint on my driveshaft
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#14 |
Registered User
Join Date: May 2011
Location: Oakley, Michigan
Posts: 735
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Re: Where do I find used Gear Vendor over/under?
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#15 | |
Senior Member
![]() ![]() Join Date: Sep 2008
Location: Harrison, Arkansas
Posts: 9,815
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Re: Where do I find used Gear Vendor over/under?
Quote:
https://saginaw.craigslist.org/pts/5561585095.html
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other Larry Build thread, Arkansas K10 https://67-72chevytrucks.com/vboard/...=755797&page=5 The ability to speak several languages is an asset, but the ability to keep your mouth shut in any language is priceless. |
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#16 | |
Registered User
Join Date: Nov 2015
Location: Colfax California
Posts: 1,644
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Re: Where do I find used Gear Vendor over/under?
Quote:
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#17 |
Special Order
![]() ![]() Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,858
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Re: Where do I find used Gear Vendor over/under?
That application is made so that can't happen. If you need to be in 4wd you don't need to be in overdrive. It's true these didn't come in anything from factory, they were an individual upfit. You would have to find a really good deal on a 4L80E and stand-alone ECM to be cheaper. And while they are toughass auto overdrives, one day they all need a rebuild (or maybe computer issues) and that ain't cheap. The two VSSs cost you a couple hundred, IIRC. Finally, you can't beat all gear direct engage.
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#18 | |
Registered User
Join Date: Nov 2015
Location: Orland, CA
Posts: 103
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Re: Where do I find used Gear Vendor over/under?
Quote:
Holy Crap where did you see two VSS's for a couple hundred? I just bought two of them from GM for $55. |
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#19 | |
Registered User
Join Date: Nov 2015
Location: Colfax California
Posts: 1,644
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Re: Where do I find used Gear Vendor over/under?
Quote:
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#20 |
Registered User
Join Date: Feb 2015
Location: Phoenix Arizona
Posts: 122
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Re: Where do I find used Gear Vendor over/under?
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#21 | |
Registered User
Join Date: Feb 2003
Location: Santa Ana, CA
Posts: 2,191
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Re: Where do I find used Gear Vendor over/under?
Quote:
Having low gears can make an OD unnecessary on the highway while cruising. But you are stuck with the low gears for all situations. The low gears will kill low end torque and make for slow take-offs and un-spirited performance in general. An OD allows you to have a high gear for performance, and then a lower effective ratio for cruising. |
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#22 |
Registered User
Join Date: Nov 2015
Location: Colfax California
Posts: 1,644
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Re: Where do I find used Gear Vendor over/under?
You guys that do these with all new parts, how much is it costing you after its all said and done?
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#23 |
Registered User
Join Date: May 2009
Location: Canton, Tx
Posts: 175
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Re: Where do I find used Gear Vendor over/under?
I found mine at a swap meet, it came out of a 454 SS truck.
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#24 |
Registered User
Join Date: Nov 2015
Location: Colfax California
Posts: 1,644
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Re: Where do I find used Gear Vendor over/under?
I've seen these pictures of your truck before, that setup with the long adapter just looks bulletproof
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#25 |
Registered User
Join Date: Nov 2015
Location: Colfax California
Posts: 1,644
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Re: Where do I find used Gear Vendor over/under?
I've done some reading on the amount of horsepower and torque soaked up by the th350 and th400 transmissions, but I couldn't find anything about the Gear Vendor and if/how much additional power they soak up. Seems like the loss in the transmissions is due to rotating mass, but a gear vendor is relatively small correct? Depending on the adapter?
I've seen the inside of a gear vendor and it's a lot like a transmission, but what's inside the adapter? Just a driveshaft inside the adapter housing? Thanks guys for all the replies |
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