Some info can be found in the Mopar Performance book of the late 70's by Larry Schreib.

Two sets of Big-Block development heads sent to the World famous Weslake Engineering in the late sixties.
One set is featured in the book, the other set is still here in the sunny County of Kent UK...(the garden of England) thumbs

They got 'BAD PRESS' and then forgotten for 50 years...(how sad) violin

MP Atherton.jpeggas flow GIANT.jpgMP book larry Schreib.jpg
Last edited by Gtxxjon; 10/21/21 10:00 AM.

Carpe diem, quam minimum credula postero, thanx Horace!

There’s no point trying to fix stuff that ain’t broke,,, 'but if ain’t broke',,, you is not trying hard enough...