340 stockers

the best thing with them , is making it faster and more power with out throwing after market parts at them. in other words, aluminum heads, stroker cranks, 1050 carbs, 13 to 1 pistons, . they are allowed, to use roller rockers, after market rods, thanks Chevrolet, pistons and rods must weigh a certain amount. no cut down or knife edge cranks & the huge camshaft. and ring grooves must be a certain distance down and stock width. also stock oil pan. very restrictive. just food for thought.