New Gm 620hp Crate Engine

[BADASS38CHEVY]

Here are some more specs i found on this engine. the price on a long block for the 620 hp is $10.600 less carb, distributor, water pump,and intake.the price is getting better. GM’s most powerful. The ZZ572/620 is built around an all-new Gen VI tall deck race block, filled with a forged, 4340 steel, 4.375” stroke crankshaft, shot-peened rods, and forged aluminum pistons. The newly redesigned rectangular port aluminum cylinder heads result in a pump gas friendly 9.6:1 compression ratio. Also included is a .632” lift, hydraulic roller camshaft, roller rockers, dual valve springs, 620hp and 650 ft. lbs. of torque! ZZ572 / 620 Technical Information ·HP: 620 @ 5500 RPM ·Torque: 650 Ft. Lbs. @ 4500 RPM ·Compression Ratio: 9.6:1 ·Bore: 4.560” ·Stroke: 4.375” ·Block: Bowtie Tall Deck with One-piece rear seal ·Crankshaft: Forged 4340 Steel ·Connecting Rods: Forged 4340 Steel, H-Beam style, Shot peened ·Pistons: Forged aluminum with full floating wrist pin ·Piston Rings: Plasma-moly rings ·Camshaft: Hydraulic roller (.632” / .632” lift) (254 / 264 duration @ .050”) ·Lifters: Hydraulic Roller tappet ·Cylinder Heads: Aluminum Rectangular Port with a 118cc combustion chamber ·Intake Valves: 2.25” Stainless Steel ·Exhaust Valves: 1.88” Stainless Steel ·Valve Springs: Dual spring (1.540” diameter) ·Spring Retainers: Hardened chromemoly steel ·Rocker Arms: Aluminum Roller Rockers, 1.7:1 ratio ·Push Rods: High Performance ·Windage Tray: All new Screened and Louvered design ·Damper: High RPM torsional damper ·Fuel: 92 Octane

[Wet Dream]

Thats what I'm talkin about. :D

[TPI]

That is a nice motor, and I love GM parts, but they charge so much for there completed engines. A better engine could be built for less. If someone wanted to finish that engine right, you would be looking at a rough estimate of Engine cost+:
Complete EFI(inc distributor, ECU, ect...) $4000.00
Fuel pump, hoses, ect........................... $550.00
Exhaust with tails(cmi, powerflow plus.) $2500.00
Accessories( brackets, pumps, bolts.....) $2000.00
Oil Pan, oil cooler, ps cooler, lines $1500.00
Bellhousing,coupler $550.00
Motor mounts $300.00
Crossover, h20 hoses, clamps $250.00
misc sending units, silicone, sealer, ect......$200.00
Total $11850.00 (No labor)
Now all you would need is to change that cam to a "marine" application:($300.00) and someone to map your computer:$500.00(roughly)
New total $12650.00 Not including taxes, shipping charges, labor, phone bills, gasoline expenses, ect............................................... ...........................
Now everyone knows you could lower the price significantly by putting a carburator on this motor. But the future is EFI, and that would make this motor worth all of that $$$ you are investing. This list applies ONLY to stern drives. Jets and v-drives could build this motor for a hell of a lot less IMO. It is unbelievable how much this stuff adds up to when you break it all down. This is a "ROUGH" estimate, because everyone has a friend that can get them a deal. Hopefully, This list might help as a guide for someone that was thinking about building there own performance powerplant:D Good Luck.

[lakesmodified]

All you need to do after buying that engine is take it over to Westec Dyno and they will extract 800 HP by bolting it into their dyno!!!!:D

[BADASS38CHEVY]

still this is cheaper than buying a 28k plus custom engine.around 23k is not bad to have a 620hp engine.

[TPI]

Originally posted by BADASS38CHEVY
still this is cheaper than buying a 28k plus custom engine.around 23k is not bad to have a 620hp engine.
I totally agree. $28K for 620HP would be outragous.

[AZKC]

I think Info can build a bigger badder for less. :cool: GM stuff is cool but as stated $$$$
Seen his website
http://marineassault.net/
KC