Once I get a little further along on putting the Atlas 24 valve DOHC cylinder head on the 261 Chevy block, it's going to be interesting to see how the compression calculates. With the bore and stroke I'm planning to use, the displacement will be just a fuzz less than 300 cubic inches. There will be a 3/8" thick steel adapter plate between the head and the block, with the pistons and cylinder sleeves sticking up into the adapter plate about 1/8" or a little more above the top of the original 261 deck height. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!