Thanks, Romeo! (and for several other things...)

Lou

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Home of Slant6-powered fun machines since 1988

I have never done this swap, but I have mentioned to several people, that I think it is a viable conversion for a "A" body. The trans is smaller (physically) then the A500, and just might fit without butchering up the floor. The trans is well supported by both the OEM, and aftermarket. There are many "hopup" parts available, as these transmisions are used in many drag/high performance cars.

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

I have a 3.8L 2003 Impala and it typically gets around 30 mpg (~ 25 mpg US) around town. On the highway, it revs around 1800 RPM @ 60 mph and gets more like 34 mpg (~ 28 mpg US). Although the Impala has better aerodynamics, with a 0.70:1 OD (~ 1800 RPM @ 60 mph) for the 4T65-E transmission, I think 30 mpg would be reasonably achievable for an A-body with a 200R4.

Using a 3.23:1 axle with a 200R4 would be like having a early A904 with a 3.61:1 axle in first gear and a 2.16:1 axle in OD. Highway revs would be about 1944 RPM @ 60 mph with P195/75R14 tires.

I am looking into details now.

Question for Wilcap: Does this adapter plate also have the general GM trans bolt pattern on it? I might want to run a 4L60E or 700R4 in the future.

It looks like many of the 200-4R trannys have the GM std bolt pattern ALSO on their BHs, after 84 or so.

Weight listed on one site is 132 lbs, which is 15-40 lbs more than a 904, depending on whether that includes converter. Not bad.

If someone is on the phone with them, and you get the chance...

Lou

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Home of Slant6-powered fun machines since 1988

Lou,
From what I see in the picture, the transmission has both the Chevy and the BOP bolt pattern and they used the Chevy bolt holes. That should mean that it could be used with the 700R4, 4L60E, Powerglide or any GM transmission that has the Chevy bolt pattern.

Mike

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An officialis Tyrde-Browne Racing membrum

Thanks, Mike. That is great. I am not familiar with the look of GM trannys, so I could not interpret that picture.

Best, Lou

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Home of Slant6-powered fun machines since 1988

OK, so who is in for an adapter kit from Wilcap??

I bet if we get 6-10 we could get a price break. They have done this for us before on the alum flywheels.

In for a Wilcap /6-Chevy trans adapter kit:
--------------------
1) Lou Madsen
2)

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Home of Slant6-powered fun machines since 1988

Don't forget to look at the Art Carr Transmissions web site, They are talking 1,000 HP in front of those things.Should handle anything a slant can throw at it.

Thanks, Romeo. I did look at that site, and will give them a call to chat sometime soon.

Lou

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Home of Slant6-powered fun machines since 1988

I'd be in for one in the sub-$600 range.

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Joshua

http://www.chevyhiperformance.com/techa ... sion_swap/

I think I read the same article in Hot Rod, but this link popped up first.

Here's a piece on building the 200-4R for performance use.

http://www.superchevy.com/technical/eng ... ewall.html

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Joshua

I'd be in as well.

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65 Dart station wagon slant 6 - now under construction
47 Dodge Custom 4 Door sedan
87 D100 Short Bed slant 6

Retired USAF 1966-1986
Retired US Postal Service 2004-2014

OK, so who is in for an adapter kit from Wilcap??

I bet if we get 6-10 we could get a price break. They have done this for us before on the alum flywheels.

In for a Wilcap /6-Chevy trans adapter kit:
--------------------
1) Lou Madsen
2) Joshua Skinner
3) 65 Dartman
4) Rob Simmons

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Rob

I’m Mater
The Kentucky Poser

put me down for one.

thanks, andy.

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84 D100 /6 long rod 225
86 D100 /6 my sons w/offy intake/weber carb
2016 buick regal turbo

This is a nice thread detailing an install. It seems the upper trans cross member needs notching and lower member fabbed from scratch. Maybe there's an easier way to modify the stock lower member?