Have a 1970 XLCH 77cu in, the engine has a set of Forgedtrue pistons in it that I bought with the the "Doc" Dytch big bore stroker cylinders way back when (abt. 1971). I can't seem to locate a source today for replacement forged pistons for a 4 5/8 inch stroke motor. Anyone know of a possible source?

 

A very good possibility..
Mike Poole, He and Sharon Poole own a parts store that has all the old hot rod stuff.Been selling- collecting for years,and drag racing.
Poole Cycles, 972-286-5351
Heck,You may knowem!

 

Gun, I just found a set Ive had on the shelf awhile,maybe they might work?
S @ S part number 92-3704FP they are .040 over,with wrist pins ( the rings retainem)