I just acquired a set of Stage 1 heads (1970 # 1231786) from a board member and will be installing on my late 1971 # 1238861 block. Question 1. Can I use .010 steel head gaskets on this combo, or which ones do I need to use? Can they be found? Question 2. How much HP/TQ would you guess out of this combo? Hoping for a decent increase over the 73 small valve heads i am replacing. 455 .030 over Wiesco Forged Pistons .040 in the hole TA_288-94H 230-240 114 cam 1970 Ported Stage 1 heads Reworked 800 CFM Q-Jet Points eliminator/advance kit/limiter bushing etc on distributor. With .010 head gasket, I am at 10:1 This will be my convertible with 3.23 gears and a TH 400. Hoping for a good cruiser.
Can only use the steel shims if your block is an early 71....with round water ports.....or use the .027 cometics 425~440hp
My combo is about 9.5:1, .030 over, with Stage 1 heads, ported manifolds and 3.55 gears. With the 290-94H cam (226/235), it runs 12.90s, which figures at 330 or so rear wheel hp, so 420-440 gross maybe? Runs and drives great. Patrick
