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08-13-2013, 06:57 AM
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#17 |
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Re: 1973 Pontiac Firebird Formula 455-SD
Original Plans for the 1973 SD-455
* Camshaft #041 = .470"/.470" Lift ~ 308*/320* Duration ~ 87* Overlap * Aluminum Intake Manifold * Solenoid Activated Vent-Slot Opening for Hood Scoop Though EPA Emission Restrictions wouldn't permit it, but with the desired 10.25 - 1 Compression Ratio the 1973 SD-455 could put out 370 HP. Last edited by Paul Ceasrine; 08-13-2013 at 07:01 AM. |
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