HPP Engine Buildup Worksheet

Engine Displacement: 467 ci
Bore/Stroke: 4.185 / 4.250-in
Bore/Stroke ratio: 0.98:1
Rod/Stroke ratio: 1.6:1

Bottom End
Block: Stock ’75 455
Deck height: 10.205-in
Crank: Butler/Eagle forged
Balancer: Summit Street/Strip, steel, elastomer, 6.610-in, SFI 18.1
Rods: Eagle forged H-beam, 6.800-in
Bearings: Clevite, plain shell, tri-metal
Pistons: Butler/Ross forged flat-top with valve reliefs
Piston-to-deck height: 0.010-in below
Piston pins: Ross, 0.990-in floating, 0.155-in wall
Method used to retain pins in pistons: Spiro Locks
Rings: Total Seal, moly top, ductile second, 3-piece oil, 1⁄16, 1⁄16, 3⁄16-in
Rod bolts and head bolts: ARP
Balancing specs: Internal

Oiling System
Windage tray: Canton in pan
Crank scraper: Canton in pan
Oil pan: Canton Racing Road Race Series 5-quart, wet-sump
Oil pump: Melling M54DS high-volume

Heads
Casting number: 6X
Combustion chamber volume: 96.2 ccs Maximum flow at 28 inches of pressure

Lift
Intake Flow CFM
Exhaust Flow CFM
0.100
66
55
0.200
133
106
0.300
191
149
0.400
224
170
0.500
236
182
0.600
250
186

Compression ratio: 9.1:1
Valves: Manley SS 2.11/1.77-in
Angles used in valve job
Intake: 45, 60, 75, and 82-deg, 82 is hand-blended into 75-deg.
Exhaust: 45-deg, 12mm radius
Retainers: Comp Cams, steel, 10-deg Beehive
Keepers: Comp Cams 10-degee, 11⁄32-in
Valve Guides: K-line bronze liner
Valve Seals: Steel/Viton
Rocker Studs: ARP 7⁄16-in
Rocker Arms: Comp Cams aluminum full roller, 1.65:1
Pushrods: Manley 3/8x8.900-in

Cam
Brand: Comp Cams Xtreme Energy hydraulic roller
Duration At 0.050: 224/230-deg
Lift: 0.552/0.561-in
Centerline: 106-deg
Lobe Separation Angle: 110-deg
Installed Position: 106-deg
Lifters: Comp Cams roller
Valvesprings: Comp Cams Beehive
Seat Pressure: 137-lb/in
Open Pressure: 290-lb/in
Timing Chain: Cloyes double roller

Induction
Carb: Quick Fuel Technology 750-cfm, set up for blow-through supercharger
Intake Manifold: Edelbrock Torker II
Supercharger: . . Gear Head Designs Paxton Novi 1500

Ignition
Distributor: MSD Pro-Billet Ready-to-Run
Wires: MSD 8.5 mm

Exhaust
Headers: Hooker
Primary Tube Diameter: 1.75-in
Primary Tube Length: 32-in
Collector Size: 3.00-in

Gaskets 
Brand: Fel-Pro

Parts Sources
Engine Components: Summit Racing Equipment www.summitracing.com
Reciprocating Assembly: Butler Performance www.butlerperformance.com