UNDER/OVERDRIVE or 700r4
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Joined: Oct 1999
Posts: 55
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From: NEW BOSON, Mi MI
UNDER/OVERDRIVE or 700r4
Hate to see it come but winter is just about here in Mi. So I have a few things that I wanted to do to the 77 One is to change the 350 Th. trans to a 700r4 but I was told to look at the UNDER/OVERDRIVE system from GEAR VENDORS any one here have one or know any with one and how they like it.
I do run the car at the drag strip some so I guess that I am looking for the best of both worlds Better mileage and more power. The engine is 383 with a 3:73 rear end best time so far 12:58@107 mph :D :flag :flag
I do run the car at the drag strip some so I guess that I am looking for the best of both worlds Better mileage and more power. The engine is 383 with a 3:73 rear end best time so far 12:58@107 mph :D :flag :flag
Racer
Joined: May 2001
Posts: 262
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From: kingsport,tn,usa
Re: UNDER/OVERDRIVE or 700r4 (1977)
im looking at the same, thing, except im going to be building a 383
i want the overdrive so i can get outta town without having a tanker fly over me, and it would be easier on the engine
i want the overdrive so i can get outta town without having a tanker fly over me, and it would be easier on the engine
Melting Slicks
Joined: Oct 1999
Posts: 2,581
Likes: 14
From: Tolar Texas
Re: UNDER/OVERDRIVE or 700r4 (1977)
A good source for inexpensive Gear Vendors overdrive units is old used class C motorhomes. My dad had a really clean '86 Ford class C motor home with a Gear Vendors unit on it (just needed to buy the GM tailshaft adapter to make it work on the Vette). He sold the motor home for $8300. I had always threatened to remove the unit before he sold it knowing that it wouldn't affect the sales price. But, I didn't remove it and he sold it.
Look for a really good deal on one, buy it, remove the OD unit and sell it for the same or more than you paid. Or, find a wrecked one and buy the OD unit off of it.
This may sound like a stretch but it is a viable option.
Look for a really good deal on one, buy it, remove the OD unit and sell it for the same or more than you paid. Or, find a wrecked one and buy the OD unit off of it.
This may sound like a stretch but it is a viable option.
