1970 291 rec port heads

[TODD EDGECOMBE]

Jason, I am trying to keep all parts as closely date coded as possible. That is why I am curious as to the best build date for the 291 heads.

[WILMASBOYL78]

The CE replacements were typically due to valve train failure on the solid lifter big blocks. Our 70 Marine Corps Nova had a 1972 CE block, but retained the original February dated 291 heads...in this case, I believe the original owner had an oil pressure failure, and the heads were OK.

**our car was a 4th week of February build and the heads were dated early February...hope that helps.

-wilma

[TODD EDGECOMBE]

Wilma, it does. Thank you. So my 05A car would be best with an April dated pair of heads.

[WILMASBOYL78]

Originally Posted by TODD EDGECOMBE

Wilma, it does. Thank you. So my 05A car would be best with an April dated pair of heads.

I'm sure there were common production dates for the heads...might help to compare with another May built car. Sully has a May L78 Nova...maybe he has the dates from his cylinder heads.

As a general rule...30 day window is ok...there are exceptions. Keep in mind that by May of 70 most of the 291 heads were being used for the L78 Nova and LS6 Chevelles...and a few for the L78 Camaro, though I'm not sure of the production windows for those cars.