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Gearvendors #189964
01/10/09 09:37 PM
01/10/09 09:37 PM
Joined: Nov 2003
Posts: 3,398
Dandridge TN
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Dabee Offline OP
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Dabee  Offline OP
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Joined: Nov 2003
Posts: 3,398
Dandridge TN
This isn’t exactly race related, but is anyone running a Gearvenders over/under drive? I’m getting ready to put stuff the new 511 cu in bullet my 69 Super Bee and want an overdrive in there with it. The car is primarily a street driven but will see some track time.

4939069-Beeslug005.jpg (91 downloads)
Re: Gearvendors [Re: Dabee] #189965
01/10/09 09:46 PM
01/10/09 09:46 PM
Joined: Dec 2008
Posts: 1,200
UK
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602heavy Offline
pro stock
602heavy  Offline
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Joined: Dec 2008
Posts: 1,200
UK
Yea i'm running the GV set up on a 68 charger , got a 4.1 rear so it helps on the motorway , use it on the track too , is good for 1200 hp , although GV will upgrade to 2000 hp if needed.

Not many problems on installation , but had a control box go bad after a year , they sent a replacement straight away.

Unless you're real quick i don't think it's an advantage on the strip using all gears , i only used 3 over as the old motor ran out of steam through the traps (6200rpm).

Last edited by 602heavy; 01/10/09 09:49 PM.
Re: Gearvendors [Re: Dabee] #189966
01/10/09 09:55 PM
01/10/09 09:55 PM
Joined: Feb 2004
Posts: 1,417
Chicago, IL
blownEFI Offline
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blownEFI  Offline
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Joined: Feb 2004
Posts: 1,417
Chicago, IL
I'm running a Gear Vendors in my 70 Challenger behind a powerglide trans and Dana with 3.54 gears. Here's an old picture. This was taken with the old engine combo. It's a nice unit, but I wish the o.d. ratio was higher (it's only .78) so it only drops the rpms by about 600. With a 28 inch tire I can cruise 70 mph at 2,600 rpm.



"These go to eleven", Nigel Tufnel
Re: Gearvendors [Re: blownEFI] #189967
01/10/09 10:05 PM
01/10/09 10:05 PM
Joined: Nov 2003
Posts: 3,398
Dandridge TN
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Dabee Offline OP
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Joined: Nov 2003
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Dandridge TN
How did the installation go? Was any cutting reuired?

Re: Gearvendors [Re: Dabee] #189968
01/10/09 10:08 PM
01/10/09 10:08 PM
Joined: Feb 2004
Posts: 1,417
Chicago, IL
blownEFI Offline
pro stock
blownEFI  Offline
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Joined: Feb 2004
Posts: 1,417
Chicago, IL
Easy install. They give you a tailhousing extension for whatever trans you're using which places the gv unit at the proper location in the tunnel aft of the crossmember. No cutting required. Their kit also includes a speedo adapter to extend your cable to where the pickup on the gv unit is. Pretty straightforward easy install with basic hand tools.


"These go to eleven", Nigel Tufnel
Re: Gearvendors [Re: blownEFI] #189969
01/10/09 10:13 PM
01/10/09 10:13 PM
Joined: Nov 2003
Posts: 3,398
Dandridge TN
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Dabee Offline OP
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Dabee  Offline OP
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Joined: Nov 2003
Posts: 3,398
Dandridge TN
Blowen EFI, Thanks, I’ll have to give them a call Monday.

Re: Gearvendors [Re: Dabee] #189970
01/11/09 12:34 AM
01/11/09 12:34 AM
Joined: Aug 2005
Posts: 751
Southington Ct.
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turbobitt Offline
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Joined: Aug 2005
Posts: 751
Southington Ct.
I installed one in a '70 Challenger and I can say based on experience that the tunnel need clearancing. You will probably need to hammer clearance into the tunnel. Also, if you are using the stock floor shifter, the shift linkage needs to be bent to accomodate the larger/thicker tailhousing. The lower shifter mounting bracket won't fit unless you grind material off the mounting flange. You will need to check for clearance between the transmission x-member and tailhousing because of the added thickness tailhousing. I needed to use an updated urathane mount to keep it from ratteling against the x-member.


1970 Challenger w/572 Hemi street car and my pride and joy. 1986 T-Type with 272 Stage 2 Buick V6 engine - True 8 second street car. Just updated the engine and put down 928 HP @ 35# boost to the ground on chasis dyno. 1976 Cee Bee Avenger Jet Boat - 460 Ford powered.






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