[kimmi]

just need some info to what i have i purchased a motor with these castings which i believe is 69-70 202 but whats interesting is the exhaust ports are d shaped and show no signs of modification also the connecting rods are gm with a cap screw instead of a bolt and nut arrangement also all they have is a chev symbol on them any help on spec would be greatly appreciated

[JohnZ]

Over-the-counter GMPP parts - never used in production.

[Frank350]

a friend of mine got a set of those heads on a 1970 chevelle malibu 350-300HP (factory). The car also came with a 12 bolt and was not an SS. I guess it was the equivalent of a lm1 Camaro or better yet, an L30-M20.

[Frank350]

by the way those heads were 1.94 1.50, press-in studs, 64cc. Frank.

[kimmi]

no these heads have 202 and 160 valves screw in studs guide plates elongated push rod holes straight plug d shaped exhaust ports and look about 72 cc chambers slight hart shape the closest i could find in gm was series 3 ver but they don't have d ports and there angle plugs these are gm racing of some sort i hot tanked them and there is no mod done to these just never seen this version before or can i find them on any web site thanks