Quote:
Originally Posted by BonzoHansen
Jeff, more like an M21 is not always a muncie. It's an option code.
|
Actually, you mean M20. M21 is a Muncie, M20 just means a wide ratio 4 speed transmission. If you ordered the close ratio, you got the Muncie M21 or M22 if you paid extra for the HD. The standard wide ratio was the Saginaw with the low horsepower engines and the Muncie M20 with the higher hp engines. My Z28 has an M20 Muncie. I've seen COPO 427 cars with the M20. That also brings up the mistake that COPO means high performance options. It doesn't, is just means a non standard RPO which translates to a Central Office Production Order like taxi cabs or fleet cars/trucks. COPO does not always mean high performance. Just like the X11 code on the 69 Camaro does not always mean the car is an SS like some of the books say. It just means the style trim group. I had a 69 Camaro conv 6 cyl car with the X11 trim tag. I think it was an SS 250!
And the 69 Camaro Z10 "Pace Car" coupes were not actually a Pace Car package like the Z11 convertibles truly were. That one will rub a lot of people the wrong way, but the Z10 on the trim tag just refers to a non standard paint/strip scheme on the hardtop.