PSMCDR...new "tech"

[Rowdy Rat]

Ray,

Good information on the aluminum heads. All of the closed chamber aluminum heads that I have seen on production cars have been either 392s (67 L-89/L-88) or 842s (68-69 L-89/68-early 69 L-88). That 838 is a mystery to me, as is the 387 that I mentioned in my previous post. Looks like this one is going to take a little more research.

I took a look at the information on the NHRA site. The 401 head they have listed is probably a later model service replacement (I notice that they list this head for the ZL-1 as well - almost has to be an open chamber head if that is the case). A quick check through the current GM Performance Parts catalog would probably identify this head. The 077 listed for the L-88 and ZL-1 is most definitely a service replacement head that was never used on a production car.

Tom,

Sorry to hear about the decision that Dan and Bob made. Logistics may have played a part in that, but I still think that doing the teardown afterwards is the way to go. It's their show though... And a darn good one at that!

Regards,

Stan