I answer as of the questions many as I can, as I just purchased the car about 3 weeks ago, and the seller has been very unresponsive.
Proform Pontiac HEI Electronic Distributor with MSD wires
Its a stock 77 400 (dated 77, block # 500577,y4 samped on front)
Seller told me its similar to this block
http://cgi.ebay.com/ebaymotors/1977-...0Q3aRECOQ3aBIN
I don't know what kind of heads are on the car, but I don't think the rods are rubbing the heads because they would have broken by now.
We used to watson guide to adjust the valves
Used the timing chain set from the jegs cam install kit: 720-4422K
its got screw in studs
It sounds like the timing is at factory settings, and the carb is still set up for the old acm.
Engine movement has been getting slightly worse as the cam is getting broken in. The car pulls harder, but shakes A LOT. I won't drive it until the carb is in check.
Anyone have a link to a good carb tuning guide for the 750 Edelbrock.
Thanks again.