Ultra Pro Magnum XD Rocker w/ 1.8 Ratio for Chevrolet Big Block w/ 7/16" Stud Clamps where the Berserker now gives

where the Berserker now gives the street/track enthusiast a “streetable” performance valving tuned to their specific use and vehicle

Chevelle/Malibus

We have further developed that process and applied it to the best bolt in cage solution on the market

it includes a 4140 Heat Treated Adjuster for durability and a powder coat finish

Lope at idle with extremely good top end power

Ultra Pro Magnum XD Rocker w/ 1.8 Ratio for Chevrolet Big Block w/ 7/16" Stud Clamps where the Berserker now givesthese Ultra Pro Magnum XD rockers can handle up to 1,000 lbs of spring pressure. This 1828 rocker features a 1. 8 ratio for use with 7 16" stud Chevrolet 396 454 Big Block.