[YENKO DEUCE REGISTRY]

I believe it should be 'JJ' for L89 and 'JH' for L78, the same as what is listed for the Camaro, (similar to the rear codes). The 396SHP codes are not model specific, just transmission specific, so there would not be a special code for an L89 'Nova' vs an L89 'Camaro'. Even if it was done as a COPO, the engine code would most likely still be 'JJ'. The '70 COPO LT1 Novas received engines coded as CTB and CTC representing the 360hp version of the LT1 installed in the Z28's.

We have discussed at length the possibility of an L89 Nova receiving the L78's 'JH' code. Most feel that would be illogical, especially for warranty purposes.