I completely agree that a 305 can be built to make 450 hp. How much horsepower can a Chevy 305 make? The horsepower produced by the engine ranges from 130 hp to 230 horsepower depending on which type of variant of the engine is being used. Specifications for the Chevy 305 The V8 305 motor for sale has a bore of 3.736 inches and a stroke of 3.48 inches. How much horsepower does a 305 crate engine have? Though it may not compete as well with larger-displacement engines, it can still deliver plenty of power, despite its smaller bore size. The 305 Chevy engine has a lot of potential as a good engine, with a lot of options and customizations that can help to increase overall power. The high compression 350 heads are similiar in combustion chamber size & intake valve size to the 305 heads & will give a 305 the same performance as if using 305 heads.
Virtually any 350 heads will work on a 305. It will work fine and as the rest said, except for the pistons they are virtually identical.
