Hi Drew

From what I have heard, B&B (Barker) was a seperate company until bought out by Stelling & Hellings.

'California' Bill Fisher talks about these in his speed manual.

They increase the rocker ratio from 1.5 to 1.7 yielding an increase in lift of .065. They replace just the intake rockers and while they don't change the advertised duration of your cam . . . they do increase its intake duration at .050.

They were advertised to increase output by 5 horse power on a stock 216. California Bill used them on every one of his 216 dyno-test builds - no matter how wild the cam was to begin with.

I have a set on hand for my 216 build.

regards,
stock49

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