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09-30-2006, 10:18 PM
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Question on 67-69 Z28 Camaro....
I was wondering why every original/authentic first generation Z28 I've seen has power disc brakes?
The discs dont surprise me but the power booster does, wasnt the 302 a high revving cammed up (thus assumably low vacuum) engine. How did it make enough vacuum to run a booster? Max 
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10-01-2006, 12:55 AM
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Heres the cam specs for the 67-69 Z-28, they all came factory with the 30/30 Duntov....452/455 lift, 229/237 dur. Pretty stout dur. for 302 c.i. but should have made enough vacuum but maybe some Camaro expert knows if they had a canister or something like that.
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10-01-2006, 08:14 AM
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Vacuum was not a problem on 67-69 Z/28 Camaros, only when upgrading to the "off road" camshaft did low vacuum problems surface.
Vince
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10-01-2006, 03:16 PM
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Thanks.
Do you happen to know the specs for the off road cam?
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10-01-2006, 04:51 PM
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3965754 off road camshaft 0.495/0.510 inch intake/exhaust lift, 325/331 duration. Requires aftermarket springs.
Vince
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