Re: 498 Dyno, RR270 ovals and Straub cam
At 248/254at .050 on 107, the numbers are not conducive to vacuum much more than 12 inches at idle.
How much vacuum an engine actually has is exaggerated as much as HP and fuel mileage.
A Hydraboost will fix that as far as brakes are concerned.
'67 Chevelle Malibu, Catalina Blue, 540 inch Rat, Air Flow Reasearch 290 CNC Heads heads, Custom Hyd Roller, .675 lift, 234, 244 at .050, Lemons Headers, Holley Multiport Fuel Injection, TCI 6X 6Speed Automatic, 12 bolt Posi Eaton TruTrac, 3:31 Richmond Gears, front and rear power disc brakes, Global West Suspension, etc.
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