383 Chevy Small Block Engine - Make 59 LB-FT and 33 More Horsepower For Almost Free!
|
With our 530hp 383 up on Westech's SuperFlow 902 dyno, we bolted on a set of 1 1/4-inch chassis headers and compared engine performance with and without this 18-inch collector extension. The difference in midrange power was amazing. View Related Article
|
|