1970 deuce

[COPO 70 RS/Z28]

on the chart what does MSO and COMP DATE signify??

Also I have read that thy used a LT1 from a vette vs a camaro

[Schonyenko2]

There were two separate batches built. the first 125 were in equal numbers of cranberry red, fathom blue, forrest green, cortez silver, and gobi beige. They went to Yenko for stripes, and finish. those corrolate with the first date Joe mentioned, The second batch were sent to Hurst for finishing. I doubt that many of those ever saw Cannonsburg. Those are the ones that go with the 2nd build date Joe and Mike stated. That order had the 10 huggar orange, sunflower yellow, and citrus green cars. Referred to as "spring time color offerings". Also 10 more CR, and 10 FB to round out the 50.
Deuce motors are stamped CTB, or CTC, which denotes 70 Z28 4spd, or auto. The deuce add calls the motors Corvette type with 800cfm carbs. Neither of which are correct. I did believe that when I bought mine that it had a Corvette motor. It wasn't until later, after meeting Marlin, that I learned it was a Z code. Don still wanted you to believe that he was doing the transplants. And the info he printed wasn't always the exact truth.

[bkhpah]

There is no doubt some of the spring time colors saw Canonsburg. There were a few of those colors sold at Yenko..BKH

[Schonyenko2]

[ QUOTE ]
There is no doubt some of the spring time colors saw Canonsburg. There were a few of those colors sold at Yenko..BKH

[/ QUOTE ]

Absolutly. A very rusty SF yellow one setting in a mud puddle comes to mind. That was a Yenko dealer car. But many like mine, and the Halverson deuce, actually that whole transport load, were shipped direct to the dealer network. Cronkleton's falls in there somewhere being a Ericksen sold car and a Hurst finish.

[Salvatore]

[ QUOTE ]
on the chart what does MSO and COMP DATE signify??

Also I have read that thy used a LT1 from a vette vs a camaro



[/ QUOTE ]Wern't the Vette LT-1's and the 70 Z/28's the same motor? Were they not built at the same place and stamped with a Yenko Deuce code?

[Mr70]

Sam
I've always understood the difference between the two was their gross horse power,do to different exhaust manifolds & notated with seperate suffix codes.
1970 Corvette LT-1 350/370HP coded CTU/CTV used Ex.Man. LH-3872765 & RH-3932461.
1970 Camaro LT-1 350/360HP coded CTB/CTC used Ex.Man. LH-3942527 & RH-3946826.

[COPO 70 RS/Z28]

The reason I was interested in the vette/z28 issue was part numbers? I was curious about part numbers for the deuce that followed the Z but read that the deuce had a vette LT1

so now it's making more sense to me.

[Mr70]

There was and it started with the Ex.Manifolds.

[ QUOTE ]
Sam
I've always understood the difference between the two was their gross horse power,do to different exhaust manifolds & notated with seperate suffix codes.
1970 Corvette LT-1 350/370HP coded CTU/CTV used Ex.Man. LH-3872765 & RH-3932461.
1970 Camaro LT-1 350/360HP coded CTB/CTC used Ex.Man. LH-3942527 & RH-3946826.

[/ QUOTE ]

I also have an inhouse 1970 Chevrolet Technicians Diagnostics Specifications Catalog dated February 1970,that shows individual engine outputs and peak levels.
The Corvette LT-1 clearly shows 370HP @6000RPM w/peak torque of 380 @4000RPM while the Camaro LT-1 shows 360HP @6000RPM w/peak torque of 380 @4000RPM.

[COPO 70 RS/Z28]

So was the deuce running standard exhaust etc. or were they running open element & performance exhaust

Also were all the deuce motors close in build date or did they very dramatically???

[Schonyenko2]

[ QUOTE ]
So was the deuce running standard exhaust etc. or were they running open element & performance exhaust

Also were all the deuce motors close in build date or did they very dramatically???

[/ QUOTE ]

Deuces ran the Z dual snorkle air cleaner, and a stock exhaust system with the Z manifolds.
The build dates were usually very close.

My comment on the L79 Chevy11's comes from the urban legends back in the day, that those little box deuces that slid up beside you late at night, and blew your door off were somehow ordered, or transplanted with corvette motors. Remember, Bill Thomas started doing that with some of the 1st gen Chevy 11's.So there was a lot of rumor about factory, vrs transplant.
Don was a SCCA racer. Way more into Corvettes than Z's. Plus why buy a nova with a Z motor, when you could just by the Z. Cheaper. Marlin also has a theory that Don built the deuces with an eye on possible trans Am racing. Hence the suspension COPO. And if you take the stripes and flip them around, they look like Boss 302 stripes. Sorta.