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Head and Cam From VPD 120-130

uid 37336's pic
posted by  B20Paul. on  Fri Aug 17 01:52 CST 2007
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last visit: Mon Oct 20 10:54 CST 2014
[RELATED]

I wouldn't recommend buying a cam from VPD, you can get one of those from anywhere. I should make some recommendations based on what's available to you from other cam grinders that are closer to you. Isky has some profiles that are just fine, but they need to be dual pattern like VPD's.

Example: For a standard head I would use the W-61's inlet, but a longer duration for the exhaust like a Cosworth A3. With dual springs, you can use higher lift on the intake, but keep the duration around 215 degrees @ .050" like the W-61 or the Volvo K cam. With a modified head & dual springs, I'd go with W-71 for the inlet & W-81 for the exhaust, but you'd have to have 2x DCOE's or MegaSquirt to get the most out of it. Elgin & Crane also have profiles suitable for B20's, but I'd avoid Comp Cams, they have too much lift to survive for long in a B20.

VPD's heads: John Parker has showed me flow figures for his heads & they are good to great. I can do similar to his street head, but I can't get near his race head, so if I was in the market for a head & couldn't do one myself, I'd join the queue.





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