[SuperCars]

Kurt & Stan, I have the documents that may answer these questions. Also have 67-68-69 L88 vettes from which I could check carb numbers on. They are Bloomington Gold certified so I would believe they have the right Carbs. But I believe the GM paperwork that I have best explains our questions.

I have an Engineering Change Recommendation (ECR) dated 10-26-67 on COPO 9737, that states: "Furnish log sheets and necessary drawings covering changes required to install the 850 CFM Carburetor and intake Manifolds from the Corvette RPO L88 Engine (427 Cu In) on the Camaro L78 Engine (396 Cu In)". An accompanying ECR is specific with part numbers: "add Inlet Manifold #3933196 in place of #3931075". Also have a Deviation Notice that states: "Install one (1) additional pipe plug 444667 in the heater hose hole on the top right front of the inlet manifold assembly". Could this mean these Camaros had to be heater delete?

The above L88 carb and manifold ECRs were the first change to the COPO 9737's having L78 engine and started somewhat early in the production year. When I refer in this time frame to the COPO 9737 Exception Control Letter Sheet, dated 12-11-67, the only item listed that pertains to export is the U18 Speedometer/Export/, there is no V78 Export on this sheet.

A few months later came along the ECR dated 4-10-68 (which is posted above), it says: make Exp RPO V78 Mandatory on all exceptions with Engine Changes-add to cost sheets. (initialled ARB 4/15/68). So when I refer to the COPO 9737 Exception Control Letter Sheet dated 4-18-68, RPO V78 Less Certificate of Compliance/For Export/ is added on for the first time. Also appearing for the first time at the bottom of this sheet is Sports Car Conversion/Yenko/, as the word Yenko was not on the earlier COPO 9737 sheet.

Maybe I am wrong here, but I believe the ECR with the GM engineers words "engine changes" showing up at the same time as the V78 Less Certificate of Compliance/For Export/ on the Exception Control Letter Sheet, means that there was an engine change. I don't believe it would be an engine change from a L78 to another L78 with L88 carb and manifold, as that already took place months previously. Additionally when you see the V78 Export show up for the first time at this later date, it tells me that this is to cover an engine change to one which was one that had not been approved. If so, what was this new engine? I believe it is the L72 427, and is the reason for the request by Yenko to do the Federal Emmisions Smog test. Kevin.



[Edited by SuperCars (04-30-2001 at 09:35 AM).]