The engine for my car was put together to be certified stock.
Block 1972 stock bore 455, 4.3125
Crank turned .010, .010 by FinishLine Motorsports, stock 3.90 stroke
Pistons TRW forged stock replacement with the button in the center ground off, 23.5 cc dish
Rods Stock, resized
rotating assembly is balanced
Deck .041 deck height
Head Gaskets Steel Shim .020
Heads 1970 heads converted to Stage 1 by Finish Line Motorsports
NHRA minimum 55.5 cc chambers
NO porting, NO polishing, NO gasket matching
3 angle valve job with stock valve & seat angles
Compression Ratio 10.95
Intake manifold Stock 1970 intake
NO porting, NO polishing, NO gasket matching
NO cutting in the plenum area or anywhere else
Carb Stock Q-jet, 750 cfm
Air cleaner Stock 1970 GS air cleaner
Exhaust manifolds Stock manifolds, 2” outlet exit to the pipes
NO porting, NO polishing, NO gasket matching
Jet Hot coated
Exhaust system 2.5 “ mandrel bent to the bumper
X-pipe, StraightLine Performance oval case mufflers
Fuel Pump Stock Delco Stage 1 fuel pump
Ignition Stock distributor with Pertronix 1181 conversion and matching
Pertonix 40,000 volt coil, 7mm wires
Spark Plugs Autolite #25
Timing chain Stock silent chain, steel gears
Camshaft: Competition Components custom grind using Stage 1 cam specs
Lifters Hydraulic
Rocker arms Stock
Pushrods 5/16” adjustable
Chassis
1970 GS, 3750 lbs with driver, full interior, bench seat, column shift, manual steering, manual disc brakes, no a/c, 3.73 12 bolt axle, turbo 400 with stock convertor.
Best et to date:
G-70-15 bias ply tires 12.53 @ 110+ with 1.95 60’
9x28x15 Goodyear slicks 12.43 @ 110+ with 1.85 60’
Tags: Buick 455, Certified stock, Pure Stock