[bbdon]

The number 311 being the same for both Novas and Camaros just doesnt pass the common sense test. It must be a mistake. Especially if you know that the engine code suffixes were normally the same for Camaros and Novas. For example, an MQ code is correct for a 375 396 car for both Camaros and Novas in 68. And those engines were the same. I don't have any proof that L89 Novas were built. I have looked. The book Chevrolet by the numbers does not list any codes for L89 Novas. Also, the option does not show up on the Vehicle price schedule that I have, dated April 1 1969. It would be interesting to look at the same kind of price schedule for Camaro and Chevelle to see if the L89 heads are listed there. By the way, the only spec I can find for the 842 casting shows a 1.72 inch exhaust valve. The 074 casting used on the L88 and on the the ZL1 does use a 1.88 valve