The normal Sport camshaft has its lift increased to 0.310" the Rootes Competitions R20 takes that lift to 0.360" lift, thats quite a jump but the George Hartwell race cam went way past that and to a massive 0.420" of valve lift!
The Hartwell race camshaft with a valve lift of 0.420" Hartwell used to trade from Bournmouth,UK, I have been supplied by them in the past but they no longer exist.
Roy
Seen on Ebay UK.
Used but looks not to be abused, I wonder what stories this can tell and who has it now?
The Hartwell race camshaft with a valve lift of 0.420" Hartwell used to trade from Bournmouth,UK, I have been supplied by them in the past but they no longer exist.
Roy
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