|
|
Larry Navarro's 455 Trans Am
|
Engine Block: | 1975 Pontiac 455, .040 over, 2-bolt |
Bore and Stroke: | 4.15" x 4.21"; + .040" over, 468 cubic inches |
Heads: | Stock '72 455 HO 7F6 , stock valves, springs, bronze guides, teflon seals, 7/16" screw in studs |
Rocker Arms: | Harland-Sharp roller rockers, 1.5 ratio |
Crankshaft: | Stock, balanced, oil holes chamfered. ARP main cap studs |
Rods: | Stock, reconditioned, magnafluxed and balanced, beams polished, ARP bolts |
Pistons: | TRW .040" over with Butler lightweight wrist pins, ductile 1st/ moly 2nd rings |
Bearings: | All bearings are Clevite 77 |
Timing Gear and Chain: | Double roller, 3 key way |
Gaskets: | Fel Pro engine set, Felpro header set |
Camshaft: | Custom grind Comp Cam; 288 duration, 237 degrees @.050" intake/exhaust; 111 degree LSA; .488" lift intake/exhaust with 1.5 ratio |
Intake Manifold: | HO factory aluminum intake, stock, HO Racing heat riser block--block off kit |
Carburetion: | '79 TA 6.6 Q-jet, rejetted and metered, #72 jets/41 rods primary; CE rods secondary, slotted air valve plates |
Fuel Pump: | Holley #12-837, stock fuel line from tank, Earls AN-06 braided fuel line and fittings from pump to carburetor |
Exhaust: | HO Racing headers; "Tri-Y" round port #HR-64, ceramic coated in and out; 2.5" 2-chamber Flowmasters with balance tube and mandrel bent tail pipes |
Ignition: | '79 TA 6.6 HEI, stock with Accel 300+ 8.8 mm wires #7051, AC R-44 plugs @ .045 gap; initial timing set 14-16 degrees, total set to 34 degrees |
Oil Pump: | Melling M54DS, 60 psi; hardened drive rod |
Transmission: | Stock 4 speed Borg Warner Super T-10, 243 1st gear, Centerforce II clutch, steel flywheel |
Rear End: | Stock 8.5" 10 bolt limited slip unit with 3.23 gear |
Suspension / tires: | Firestone Firehawk 295/50-15 on the street; McCreary G60s on the rear at the strip with 15-20 pounds of pressure depending on track conditions. |
Vehicle Weight: | 3815 pounds with driver |
Back to Torque Power
(engines and featured cars)
Comments or ideas--email me at bboyle@boyleworks.com This site created, maintained,
and hosted on Apple Macs. Copyright © 1997-2001, Bill Boyle. All rights reserved |