[WILMASBOYL78]

[quote=Lynn]You may be right. But.. doesn't a 70 LT1 (Z/28) have a smog pump for all 50 states. Didn't all the Deuces come with smog pumps?
I believe the standards were the same for 69 and 70. Of course, that doesn't mean GM couldn't have used another means to accomplish the same result.

"but,I was under the impression that in 1970 the smog pump was a CA item or solid lifter motor [L78, LT1, LS6]...in 1970 the TCS system was added instead."

As I stated...all the 1970 solid lifter motors got the pump [Z28, Deuce, L78 Nova...Chevelle...Camaro and the LS6 Chevelle]

The low horse cars did not have the pump...except for CA.

So, we are back to the beginning..did the 1970 L48 4spd cars use the air cleaner with heat tube??

wilma