Holley DP
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Joined: Sep 2006
Posts: 629
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From: Worcester
Car: 1984 Firebird T/A
Engine: 406sbc
Transmission: TH400
Axle/Gears: Moser 9"
Holley DP
I have a Holley 650 DP that I want to put on my 383 stroker, the only problem is I looked at the manual online and it says that its not compatible with overdrive trannys. I have a th700-r4 tranny with OD? Am I treally not going to be able to use this carb or is there something I can do to run it? I got the carb for free so if I can't use it no loss to me.
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iTrader: (5)
Joined: Jan 2002
Posts: 13,622
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From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
i'd go bigger than a 650 on a 383, but regardless holley makes a bracket for 700R4 transmissions.
Joined: Mar 2000
Posts: 43,187
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
As long as you duplicate the geometry of the original throttle arm, you won't have any problems.
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Joined: Jul 2003
Posts: 2,779
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From: any clime or place...
Car: 1987 Camaro SC, 1999 Z28
Engine: GMPP 350HO, LS1
Transmission: Built 700r4/EDGE 3200, T56
Axle/Gears: 3.42 Eaton 7.625, 3.42 Zexel Torsen
https://www.thirdgen.org/forums/carb...bles-carb.html
check the link, part numbers and pics of my DP/700r4 setup.
works like a charm.
check the link, part numbers and pics of my DP/700r4 setup.
works like a charm.
Last edited by Tobias05; Jan 8, 2007 at 02:56 AM. Reason: double pasted link...
Senior Member
Joined: Jan 2005
Posts: 782
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From: Port Angeles, Wa
Car: 1983 Camaro Z28
Engine: 584
Transmission: TSI Glide
Axle/Gears: Quick performance 9 inch
I have a holley bracket that is designed for exactly what your trying to do. I was trying to ebay it right now. If that doesn't sell I will send you some pics if you want and maybe you would want it.
Thread Starter
Senior Member
iTrader: (3)
Joined: Sep 2006
Posts: 629
Likes: 1
From: Worcester
Car: 1984 Firebird T/A
Engine: 406sbc
Transmission: TH400
Axle/Gears: Moser 9"
So what cables or brackets would I need? My car is a 1984 and I want to be able to run this carb instead of something else. If someone could give me part #'s it would be greatly appreciated.
Thread Starter
Senior Member
iTrader: (3)
Joined: Sep 2006
Posts: 629
Likes: 1
From: Worcester
Car: 1984 Firebird T/A
Engine: 406sbc
Transmission: TH400
Axle/Gears: Moser 9"
How hard is it to install these two parts? I'm guessing not that hard. But now I know what that other cable is for under my hood, I actually asked a mechanic and he didnt know what it was. but now I know its a tranny cable. So with these two parts I can use my 650 DP with no problem? I also have a Holley 750 Supercharger DP, would these brackets work with that carb too?
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Joined: Jan 2005
Posts: 782
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From: Port Angeles, Wa
Car: 1983 Camaro Z28
Engine: 584
Transmission: TSI Glide
Axle/Gears: Quick performance 9 inch
Holley part # 20-95 they label it as a Overdrive Trans bracket. Works like a champ for your double pumper
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Joined: Jul 2003
Posts: 2,779
Likes: 2
From: any clime or place...
Car: 1987 Camaro SC, 1999 Z28
Engine: GMPP 350HO, LS1
Transmission: Built 700r4/EDGE 3200, T56
Axle/Gears: 3.42 Eaton 7.625, 3.42 Zexel Torsen

3 bolts install both brackets, just in case no one took the time to look at the link?
along w/ the 20-95 u need the tv valve corrector(20-121) that bolts to the throttle, like in my picture. both pieces required. 3 bolts, 10 minutes, easy.
Last edited by Tobias05; Jan 8, 2007 at 03:01 AM. Reason: added pic...
Thread Starter
Senior Member
iTrader: (3)
Joined: Sep 2006
Posts: 629
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From: Worcester
Car: 1984 Firebird T/A
Engine: 406sbc
Transmission: TH400
Axle/Gears: Moser 9"
Well i guess I have to get those two brackets. I just placed a bid on one of them on ebay(20-95) and i think I'm just going to buy the other one brand new if I cant find one somewhere.
Thread Starter
Senior Member
iTrader: (3)
Joined: Sep 2006
Posts: 629
Likes: 1
From: Worcester
Car: 1984 Firebird T/A
Engine: 406sbc
Transmission: TH400
Axle/Gears: Moser 9"
Yeah it is you, I matched the locations. I'de rather buy from a fellow member than some dealer or whatever.
Thread Starter
Senior Member
iTrader: (3)
Joined: Sep 2006
Posts: 629
Likes: 1
From: Worcester
Car: 1984 Firebird T/A
Engine: 406sbc
Transmission: TH400
Axle/Gears: Moser 9"
I'm just glad I can use my DP carbs instead of buying a new one. saves me about $450. How does these brackets let me use my OD unit on my car though?
Junior Member
Joined: Jan 2007
Posts: 27
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From: Elizabethtown, KY
Car: 92 Z28 and 92 RS
Engine: 383
Transmission: 700R4
Axle/Gears: 4.10
It can be done. I have a 650 on my 383 and it works good with my 700R4 tranny. I'm going to try a 750 this spring; hopefully I will improve my 1/4 times.
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