Get all the specs together for a 69 Z28 Camero. They are factory 327 block, 283 crank. They where rated at 290 horsepower from the factory, but in reality where pushing 450 horse power. Factory camshaft was a solid lifter cam. The biggest problem I ever saw with this engine was the fact that they would continue to build RPM's untill they came apart. They will wind to over 9000 rpm. One heck of a great engine for being a 302 cubic inch displacement.