COPO 9010 Carburetor

[Rowdy Rat]

<BLOCKQUOTE><font size="1" face="">quote:</font><HR>To my knowledge the Z28's and Corvette's used different carbs, and the Novas are equivalent to the Z's.<HR></BLOCKQUOTE>

Well, I agree that the Novas and Z-28s would be the same (as you stated, they used the same codes - CTB and CTC). But did the four speed Corvettes use the same carb as the four speed Z-28s and Novas as well? Pete's 4555 seems to indicate that they did.

Rob, I can tell you about the Corvette LT-1s with a bit of certainty as I'm pretty familiar with them (somebody else will have to fill in the blanks on the Camaro/Nova issue). All Corvettes with the LT-1 were 4 speed manual transmission cars for all three years it was offered as an option (1970-72); there were no automatics. In 1970, four engine codes were listed CTU, CTK, CTV, and CTR although the CTR code was not used in production (there is some conjecture that this may have been the code for the automatic, but there is no proof). The CTU, CTK, and CTV Corvette codes used the 4555 carburetor except when NA-9 was ordered. If an LT-1 was ordered with NA-9 (what basically amounted to California emissions) then the 4489 carburetor was substituted along with a carbon canister, vent line, carb heat shield, and a few other items.

No 1970 Corvette that I'm aware of used the 4554 or 4490 in production which makes sense as these were carbs for automatic engines. I'm a bit surprised that the Marlin's research on the Deuces indicates the 4490; I would have expected the 4554 with the M-40 and 4555 with the M-20/21/22 in all but California applications and 4489 (4 speed) and 4490 (auto) when a car received the CA emissions hardware.

Does this sound reasonable or am I way off base on this one? Any second generation Camaro guys - what's the correct carb for a '70
Z-28?

Regards,

Stan

[YENKO DEUCE REGISTRY]

Stan;
I was not aware that the Corvette's used the same 4555 carb, nor did I know that there were no a/t's installed behind an LT1 in a vette.

The issue of the COPO Novas using the 4490 carb is from the various owners of those cars, and can not always been deemed 100% reliable. I will do some additional research on those guys to make sure they are not just quoting 'some book' when they reference their carb's number.
M

[COPO]

My '70 Z-28 4 speed has its original #4555 and the auto should be #4490. These are for non-CA cars.