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#11
12-22-2005, 04:11 AM
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Re: speedo reduction box
Thanks Ed..my search begins.
and as for you Mr. Rose...just want to see what my trap speeds will be  ALbert
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1969 9566AA COPO Chevelle M-22 1969 Malibu 489 ZL-1 T-56/4.56 1969 Beaumont 540 th400 3.70 1969 Chevelle 300 Deluxe 427 ZL-1 M 22W 1970 Olds 442 W 30 2 door post 1969 Ply. GTX 426 hemi auto. Blue. 1940 Dodge pick up Durango 4X4 1968 Camaro ragtop LSA ZL1 
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#12
12-22-2005, 04:57 PM
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Re: speedo reduction box
Thanks Jeff, those are the pieces that I have - so I guess I'm not missing any. I'll have to recheck it - again.
Mr.Rose - get your hiney to a SCR, you'll see why we need speedo's 
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Marlin 70 Yenko Nova-350/360, 4speed M21, 4.10 Posi (Daddy's Ride) 69 SS Nova-396/375hp, 4speed M20, 3.55 Posi (Benjamin's Ride) 67 RS Camaro-327/250hp, 2speed Glide, & 3.08 Open (Danny's Ride)
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#13
12-22-2005, 10:05 PM
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Re: speedo reduction box
Our Chevelle with the M20 has the straight reducer rather than the right angled one.
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Chevelleless after 46 years......but we did find a low mileage, six speed, silver 2005 Corvette. It will just have to do for now. 
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#14
12-23-2005, 08:24 PM
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Re: speedo reduction box
Our reducer has Stewart-Warner on both ends and is original to the car unless some sneaky devil switched it. With 4:10 gears you would be winding it pretty tight to go off the end of the speedometer scale. I found the speed warning buzzer handy though.
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Chevelleless after 46 years......but we did find a low mileage, six speed, silver 2005 Corvette. It will just have to do for now.
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#15
12-23-2005, 09:20 PM
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Re: speedo reduction box
And by the way, GM didn't use a Stewart Warner reducer. That's an aftermarket item.
Ed..I've never seen anything but a Stewart Warner brand used on the Ass.line for this item.Both on survivor vehicles and in the manuals. Can you show paper or pix to contradict this?
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#17
12-23-2005, 10:59 PM
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Re: speedo reduction box
Only speaking of the 4:10 equipped Chevelles, the Stewart Warner gear is the only one I have ever seen on all the original cars as well. On a side note, I recently had a neighbor ask for help taking a 305 and Turbo 350 out of a 80's something Buick wagon and that also had this exact same reducer on it.
 Rick
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Rick Nelson Musclecar Restoration and Design, Inc (retired) www.musclecarrestorationanddesign.com https://www.youtube.com/watch?v=62r-6vgk2_8 specialized in (only real) LS6 Chevelle restorations
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#18
12-24-2005, 12:21 AM
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Re: speedo reduction box
"I recently had a neighbor ask for help taking a 305 and Turbo 350 out of a 80's something Buick wagon and that also had this exact same reducer on it.
Rick " Hmmmm 
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1969 9566AA COPO Chevelle M-22 1969 Malibu 489 ZL-1 T-56/4.56 1969 Beaumont 540 th400 3.70 1969 Chevelle 300 Deluxe 427 ZL-1 M 22W 1970 Olds 442 W 30 2 door post 1969 Ply. GTX 426 hemi auto. Blue. 1940 Dodge pick up Durango 4X4 1968 Camaro ragtop LSA ZL1
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#19
12-24-2005, 04:30 AM
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Re: speedo reduction box
Rick (Mr70),
No, I have no documentation showing only the "AC" Adapter being used. I've just always assumed (and perhaps incorrectly), that Chevrolet only used AC adapters. I've also always assumed that the conversion cars from Dana, Nickey, Yenko, etc... "May" have used an adapter other than an AC product (Stewart Warner in this case). If this is incorrect, then I appologize. The P&A doesn't show a manufacturer of any of the adapters, so in this case, the "good book" is useless!! Ed
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Ed Bertrand 1968 RS/SS L-89 396/375 Convertible CRG Member
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