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#1 |
Senior Member
Join Date: Aug 2004
Location: Everett, WA
Posts: 2,316
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Gear Vendors
I found a guy parting/selling a '87 or '88 3/4 ton Suburban.
He said it has a T400 with a Gear Vendors gear splitter. What is this? I have heard of a GV overdrive and underdrive and have never been certain if they were two separate units or one in the same? If they are the same is a "gear splitter" just another way of describing the same thing or is it something completely different??? If someone could describe how these work in a very low level I would appreciate it. I mean, do you have a lever or push a button to make it function or is it just like putting a truck with a 700r4 in OD? I am getting close to moving my '87 crew into the que and was planning on replacing the T400 with a 700r4 but if this would give me OD and the strength of a T400 I would prefer that.
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2009 Honda Fit CfC (bsf 44.9 mpg) 2000 Tahoe Limited 1991 GMC CrewCab Dually 2wd, will end up swb, not dually and replace CCswb below 1991 GMC CrewCab Dually 4x4, just going to fix things up for now 1982/1989 K5/GMC Jimmy 2wd 1987 GMC 1/2 ton swb 2wd Crew (sold) |
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#2 |
yeller
Join Date: Oct 2001
Location: Twin Cities
Posts: 13,826
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Re: Gear Vendors
It is the same thing. I don't have one, but their website should explain how it works. They are spendy units though.
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Jeff 73-87.com 73-87.com Facebook page 73-87 cab corner 6x9 speaker brackets for sale 67-72 cab corner speaker brackets for sale 47-54 cab corner speaker brackets for sale |
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#3 |
Registered User
Join Date: Feb 2007
Location: Austin, TX
Posts: 3,930
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Re: Gear Vendors
If you can score it for cheap, DO IT !!!! It is the ultimate overdrive, but unfortunately, Gear Vendors charges around $2,600 for one.
It's all electronic, it's like a mini automatic transmission.
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1977 GMC Sierra Grande |
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#4 |
In the Forgotten far North.
![]() Join Date: Jul 2007
Location: Anchorage, Alaska
Posts: 2,627
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Re: Gear Vendors
I agree. They are great units will even help with gas mileage as well. On a 4wd with a TH400 and 3:73 rear end gears, when activated it drops the ratio to equal 2:91 rear end gears.
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1987 R3500 CREW CAB DUALLY (BIG RED)Acquired 06/12/2015 1990 chevy suburban V2500 5.7L My cluster Mods-Nov 2007 overhead console Stereo install Round 2 Aug 2009 Heated/turn signal mirror upgrade |
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#5 |
1962 C-10
Join Date: Apr 2005
Location: Las Vegas, New Mexico
Posts: 4,978
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Re: Gear Vendors
Go for it! What's he asking for it? I have a GV unit in my '62. It's great. I have a th350, the GV and 3.73's. It cruises 75 at about 2300-2500 rpms, and you get the firm shifting of a th350 plus overdrive. You can split every gear, that's why its called over/underdrive. If your in 2nd and you kick on the unit, it's like 2nd over OR 3rd under. That's how they explain on their site.
http://www.gearvendors.com/ Check it outVery pricey new. I scored mine for $500. I highly recommend it.
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Joseph Chavez ![]() "See the USA in a Chevrolet!!" ......................_____ .........________//__{\_____ ,,,,,,,/__(O)___//___/__(O)_/ 1962 C10 Shortbed Fleetside 327/th350 GV overdrive 1974 C10 Longbed Fleetside 350/th350 "The Trash Truck" 1999 Chevy 2500 OBS, Longbed 5.7/4L80E 4x4 2015 GMC Sierra SLE 1500 4x4 |
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#6 | |
Senior Member
Join Date: Aug 2004
Location: Everett, WA
Posts: 2,316
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Re: Gear Vendors
Quote:
I still don't understand some things though. Tell me if I am understanding this right; if you have it in "auto" mode, it goes through 1st gear in the tranny then the GV unit goes into 1st-OD then the tranny shifts to 2nd, then the GV goes into 2nd-OD then the tranny shifts into 3rd then the GV goes into 3rd-OD? So essentially you have a 6-speed automatic? Can I assume this is controlled by user input - if you aren't sticking your foot in it it will function normally? It is like the GV is turned off? -or- Am I way off? It only does things in 1st and 2nd if you have it in "manual" mode and you tell it to shift in that manner? It only acts like a fouth gear like a 700r4? It is in a 'burb with a diesel with a broken crank. He want's to sell it complete and says it is a rebuilt T400 with the GV installed at the time of rebuild. Claims it is real nice otherwise but it isn't the color combo I am looking for (brown/tan with tan interior). He is asking $1200.
__________________
2009 Honda Fit CfC (bsf 44.9 mpg) 2000 Tahoe Limited 1991 GMC CrewCab Dually 2wd, will end up swb, not dually and replace CCswb below 1991 GMC CrewCab Dually 4x4, just going to fix things up for now 1982/1989 K5/GMC Jimmy 2wd 1987 GMC 1/2 ton swb 2wd Crew (sold) |
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#7 |
1962 C-10
Join Date: Apr 2005
Location: Las Vegas, New Mexico
Posts: 4,978
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Re: Gear Vendors
In auto mode the tranny will shift 1st-3rd like normal, and the GV will kick in (like 4th) at around 45 mph. In manual mode, you can split every gear, using a floor switch.
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Joseph Chavez ![]() "See the USA in a Chevrolet!!" ......................_____ .........________//__{\_____ ,,,,,,,/__(O)___//___/__(O)_/ 1962 C10 Shortbed Fleetside 327/th350 GV overdrive 1974 C10 Longbed Fleetside 350/th350 "The Trash Truck" 1999 Chevy 2500 OBS, Longbed 5.7/4L80E 4x4 2015 GMC Sierra SLE 1500 4x4 |
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#8 |
Registered User
Join Date: Feb 2007
Location: Austin, TX
Posts: 3,930
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Re: Gear Vendors
For $1200, that's a steal if everything works. You could probably sell the rest and make most of the cost back.
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1977 GMC Sierra Grande |
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#9 |
Registered User
![]() Join Date: Oct 2006
Location: Southern Kalifornia
Posts: 3,066
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Re: Gear Vendors
When I get them, I am able to get 800-1500 each so 1200 is a good deal. If you have the cash,jump on it. It is a hell of alot stronger than a 700r4. Great find.
-Lance
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------------------------------------------------------ -Lance 2000 Chevy C2500, 5.7, 4L80e 1999 Suburban K2500, 7.4, 4L80e 1980 Camaro..son's car...PROJECT |
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#10 |
BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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Re: Gear Vendors
If I found one priced low, I would jump on it like I did with the ZZ4.
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#11 |
Registered User
Join Date: Jul 2004
Location: Spanish Springs, NV
Posts: 1,171
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Re: Gear Vendors
Just helped pull one out of a 90 F250 fwith a friend. $108 with the tailhousing at PickNPull 1/2 price sale this morning. GV current price $2895.00!!
Can you say S C O R E !!!! - Dave
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2003 Silverado K1500 Z71 - Arrival Blue 1973 K5 Cheyenne Blazer 350/TH350/NP203 Kids Trucks:92 K1500 Blazer 5.7/700R4 4" lift. RETIRED: 1980 Scottsdale 4x4 Founding Member: "TILT WHEEL BELLY." Club |
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#12 |
Registered User
Join Date: Feb 2007
Location: Austin, TX
Posts: 3,930
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Re: Gear Vendors
I really need to score one of them for cheap. It's tough for me to let go of the brute strength, simplicity, and cheap cost of the Turbo 350.
I just hate how GV charges so much for these. Yes, it's a quality unit and I've never heard a bad thing about them. When you consider how strong they are and the fact that while your transmission may go through several rebuilds, you will be still using the same GV unit, the $2000 price tag from years ago was reasonable. But $2600-$2800 ? That's just insane. I could have a really strong 4L80E and computer for that much. Does anyone know of a GV dealer that might be able to get better pricing on one of these ?
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1977 GMC Sierra Grande |
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#13 |
Registered User
Join Date: Jul 2004
Location: Spanish Springs, NV
Posts: 1,171
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The trick when "Yarding" is to look inside for the GearVendors" electronic control box. Then you know to look underneath.
- Dave
__________________
2003 Silverado K1500 Z71 - Arrival Blue 1973 K5 Cheyenne Blazer 350/TH350/NP203 Kids Trucks:92 K1500 Blazer 5.7/700R4 4" lift. RETIRED: 1980 Scottsdale 4x4 Founding Member: "TILT WHEEL BELLY." Club |
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