In my camaro i have a 355 with 11.1 comp, an old comp cams 292 cam, headers, a set of circle track heads with 2.08 valves. and the heads have been milled a ton. I had stock rockers on it and then switched to rollers. You could tell a big difference in how the motor sounded and reved. I have no idea if they gave me anymore power but it did seem like some increase. I would say they would be money well spent. Even better if you can find someone to split a set and get both 1.5 and 1.6 ratios.
Andy
Andy
