ENGINE SPECIFICATIONS:
Bore:4.310 inch
Stroke:4.360 inch
CID:507 cubic inches
Compression Ratio:12.4:1
Camshaft:COMP Solid Roller
Cam duration:261/268 degrees at 0.050-inch tappet rise
Cam lift:0.886 inch
Spring seat load:300 lbs
Spring open load:800 lbs
Rocker ratio:1.8:1
Lobe separation:107 degrees
Installed centerline:104 degrees
Top ring:Speed Pro, Moly 0.043 inch
Top ring gap:0.022 inch
Second ring:SpeedPro, taper face 0.043 inch
Second ring gap:0.028 inch
Oil ring:3mm
Piston:CP Dish, 0.927-inch pin
Gas Ports:12, vertical
Quench clearance:0.035 inch
Block:AllPontiac.com, iron
Crankshaft:Sonny Bryant, billet
Rods:Carillo, 6.500 inch
Main journal:340 Mopar
Rod journal:2.00 inch
Cylinder head:All Pontiac aluminum, ported
Peak intake flow:420 cfm
Intake valve diameter:2.230 inch
Exhaust valve diameter:1.710 inch
Intake Manifold:Edelbrock Victor, ported
Carburetor:Demon, 1,100 cfm
Header:Hooker 2.125-inch primary, 3.5-inch collector
Top Horsepower:820 at 6,200 rpm
SOURCE
Jon Kaase Racing
Dept. HPP
735 W. Winder Ind. Pkwy.
Winder
GA  30680