cobra marty

In Chevy HighPerf mag. GM Perf Products will release a 572 crate motor in 620 and 720HP levels. Price not yet available.

620hp@5500, 650tq@4500, redline 6000, CR9.6:1, 10.200", hyd roller 254/264 0.632"/0.632", 118cc alumn rect heads, 2.25/1.88 stainless valves, dual valve springs, alumn roller rockers, single plane intake, 850mech secondary HEI, 92 octane.

720hp@6250, 685tq@4500, 12:1, mech roller,266/274 0.714"/0.714", 4500carb 1095cfm, race fuel.

Back4More

Good...Gives me another reason to get into ProStreet.

timucin

when?
any web adres ?
thnx

paradigm shift

I think this is the motor. Not sure when its due out.

http://www.sallee-chevrolet.com/Sneak/Previews.html

Back4More

Im going to take a stab here at around $9950.00
Thats my guess.

timucin

572 C.I.D. - 9:1 Compression Crate Engine Technical Information


Horsepower……………………………………620 @ 5500 RPM
Torque………………………………………………650 Ft. Lbs. @ 4500 RPM
Max. Recommended RPM…………6000 RPM
Compression Ratio…………………9.6:1
Block…………………………………………………New! Sportsman Tall Deck Bowtie Gen VI
10.200" deck height
Bore……………………………………………………4.560"
Stroke………………………………………………4.375"
Crankshaft……………………………………Forged 4340 steel
Connecting Rods………………………Forged 4340 steel, H-beam style, Shot peened
Pistons……………………………………………Forged aluminum, Full floating wrist pin
Piston Rings………………………………Plasma-moly rings
Camshaft…………………………………………Hydraulic roller
Valve lift: .632" I, .632" E
Duration @ .050" 254Ί I, 264Ί E
Lifters……………………………………………Hydraulic roller tappet
Cylinder Heads…………………………Aluminum rectangular port
118cc combustion chamber
Intake Valves……………………………2.25" Stainless steel
Exhaust Valves…………………………1.88" Stainless steel
Valve Springs……………………………Dual valve springs
1.540" coil diameter
1.800" installed height
197 Lbs. seat pressure
Spring Retainers……………………Hardened chromemoly steel
Rocker Arms…………………………………Aluminum roller rockers, 1.7:1 ratio
Push Rods………………………………………High performance one piece
Intake Manifold………………………New! Aluminum tall deck single plane
4150 series carburetor
Carburetor……………………………………850cfm, mechanical secondary
Rear Main Seal…………………………New! One-piece design
Windage Tray………………………………New! Screened and louvered
Damper………………………………………………High RPM torsional damper
Distributor…………………………………H.E.I.
Ignition Timing………………………36Ί total advance
Spark Plugs…………………………………R42XLS
Fuel……………………………………………………92 Octane


nice+nice