So...You NEED 720 HP & 685 lbs-ft of Torque--In a

[TxDoc]

ZZ572/720R - GM Performance ZZ572-R, 572cid/720hp

 

Available Mid '2003      

 

 

 Detailed Description

GM Performance Parts? first purpose built drag race engine is also the largest, most powerful engine ever produced by GM Performance Parts. GM will be offering this monster as 12:1 compression full-blown Race engine as well as a 9:1 compression Street friendly piece that will make your Street Rod or Muscle Car the envy of the neighborhood. Look for a stable of 572?s available in early ?2003. GM Performance Parts plans on offering the 572/720R and the 572/620 as a short block, long block, or a complete assembly.

ZZ572 / 720R Technical Information:

*HP: 720 @ 6250 RPM

*Torque: 685 Ft. Lbs. @ 4500 RPM

*Compression Ratio: 12:1

*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: Mechanical roller (.714? / .714? lift) (266 / 274 duration @ .050?)

*Lifters: Mechanical 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 (1.567? diameter),

-(2.050? installed height),

-(230 lbs. of seat pressure)

*Spring Retainers: Hardened chromemoly steel

*Rocker Arms: Aluminum Roller Rockers, 1.7:1 ratio

*Push Rods: High Performance (1-piece)

*Intake Manifold: Aluminum Tall Deck single plane

*Carburetor: 1095 cfm, mechanical secondary

*Windage Tray: All new Screened and Louvered design

*Damper: High RPM torsional damper

*Distributor: Multiple Spark Discharge

*Ignition Timing: 36 degrees total advance

*Spark Plugs: R42XLS

*Fuel: Race Fuel

[RyanbabZ71]

I seen a commercial on TNN this weekend for this engine along with the 350/502.  Did you see the price tag on the 572?  $7000+      

 

I told my dad who was watching with me we should add this to his S-10      

[CMNTMXR81]

http://www.gm-trucks.com/cgi-bin/ib3/ikonb...65;hl=cmntmxr81

 

I've been drooling over this thing since I first posted it back then.  

[TxDoc]

Sorry for the repost. They have all kinds of "fine" engines!  If I can just win that *%(#(* Texas Lotto!!!!!

 

Estimated Lotto Texas Jackpot

Wed., Jan. 15, 2003

$32 Million

 

Funny thing--when it's $125 million, people play. But..when it's $4-5 million, they say it't not high enough

[CMNTMXR81]

And then the people who win ALREADY have money!!!!  That pisses me off!

 

I'm still drooling over it today too.  But I believe the price for it will be extortionet (sp?).