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Mike Garrity's 1979 455 Trans Am
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Engine Block: | 1973 Pontiac 455 2-bolt mains |
Bore and Stroke: | 4.15" x 4.21"; + .030" overbore |
Heads: | 6x-4 d-port heads with 2.11" Ferrea SS intake and 1.77 exhaust valves; Lunati valve springs, stock retainers and keepers, teflon valve seals on both valves; heads were ported by Paul Knippen; compression is 9.5 to 1 |
Rocker Arms: | Harland-Sharp roller rockers, 1.65 ratio using stock pushrods |
Crankshaft: | Stock, reconditioned .030/.030, balanced |
Rods: | Stock, reconditioned, ARP bolts |
Pistons: | TRW forged .030" over; moly rings |
Bearings: | All bearings are Clevite 77 |
Timing Gear and Chain: | Double roller |
Gaskets: | Fel Pro engine set, Felpro header set and collectors |
Camshaft: | Custom grind Lunati hyrdaulic; 235 intake / 245 exhaust @.050"; 110 LSA, .560" lift intake/ .590 lift exhaust with HS rockers |
Intake Manifold: | Edelbrock Performer RPM with .5" cut to secondary divider |
Carburetion: | Edelbrock Performer RPM Q-jet with #75 jets and .039 secondary rods |
Fuel Pump: | Carter high volume mechanical for street use assisted by Carter 100 gph electric pump at tank; stock 3/8" fuel line to the mechanical pump and braided 3/8" line to the carburetor |
Exhaust: | Hooker Super Competition headers, 3" Dr. Gas X crossover, 2- 3" Dynomax Super Turbo mufflers with 3" Torque Technology tail pipes |
Ignition: | Stock HEI ignition, 8 mm plug wires; 35 degrees total mechanical advance |
Oil Pump: | Melling M54DS, 60 psi; 10w-30 oil |
Transmission: | THM-350 rebuilt by Trans-Pro with 11" Coan 3500 rated flash; B&M hammer shifter |
Rear End: | Stock 8.5" 10 bolt limited slip unit with 3.23 to 1 gearing; unknown brand traction bars |
Suspension / tires: | Cragar 15" x 7" race rims front, 15" x 8" race rims rear; 225/70 radial TAs in front and MT Indy Profile SS L-60-15s in the rear (28" x 9.5"). 25 psi on street and at the strip |
Vehicle Weight: | 3950 pounds with driver |
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