Found this on Ebay, thought it could be needed by someone on here like Ray...http://cgi.ebay.ca/1974-PONTIAC-350-400-ENGINE-MANUAL-Lemans-Camaro-Nova_W0QQitemZ380099726360QQcmdZViewItemQQptZMotors_Manuals_Literature?hash=item380099726360&_trksid=p3286.c0.m14&_trkparms=66%3A2%7C65%3A1%7C39%3A1%7C240%3A1318
I am sitting here and in my hand is the 1974 Pontiac 350 & 400 Orange Engines Chassis shop Manual Supplement. How you got this off eBay and delivered to my home in a day, I'll never know. There is no doubt you are a Canadian Poncho Superstar!
It is a really good book too, has absolutely everything you need to know about the engines used in "Domestic Laurentian, Parisienne Brougham, Catalina, Le Mans, Le Mans Sport and Luxury Le Mans.
This supplement contains the service and overhaul procedures for the 350 V-8 2 and 4 barrel carburetor engines used on domestic A and B series and the 400 4bbl. used on "B" wagons."
Thanks also to Pascal for pointing out the auction.