GM PERFORMANCE PARTS BRINGS POWER TO SPARE WITH NEW ENGINES
People who live for acceleration and top speed know one thing
– life gets better the faster you go. Well, the team at
GM Performance Parts understands this and is making higher performance
possible with a selection of new crate engines.
ZZ572/620
For muscle car, off-road and street-rod enthusiasts, there’s
nothing more important than power. From the start line to red
line, big thrust under the hood is a must. GM Performance Parts
fills that need by introducing GM’s largest, most powerful
street engine, the 620 horsepower ZZ572. This big rippin’,
tire burnin’, butt kickin’ V-8 is for those who think
excess is barely enough.
“The excitement of ‘seat of the pants’ muscle under the hood is what real hot rodders are looking for when they build up their dream machine,” said Will Handzel, program manager, GM Performance Parts. “The ZZ572/620 has all the essential ingredients that make a hot rod really ‘hot’ with the added reliability that only GM’s engineering and durability testing can provide.”
To start, this all new race block is filled with a forged 4340 steel crank with a 4.375-inch stroke, shot peened forged 4340 H-beam rods, and forged aluminum pistons with full floating wrist pins.
A new GM, tall-deck single-plane intake manifold and 850 CFM
Demon carburetor deliver enough air and fuel to make 620 horsepower
at 5500 rpm, and 650 ft.-lb. of torque at 4500 rpm. And, because
of the redesigned rectangular port aluminum cylinder heads, all
this power and performance is delivered with a gas-pump friendly
9.6 to 1 compression ratio.
ZZ572/720R
For serious racers who need great off-the-line power that’s
there round after round, the GM Performance Parts 720 horsepower
ZZ572 is the real deal. Built around the all-new Gen VI tall-deck
Bow Tie cylinder block, this all-new race block is similar to
the 620 hp ZZ572 but has more compression and a more aggressive
camshaft.
“This drag racing engine is filled with hard core race parts for hard core performance and durability,” Handzel said. “It’s the engine that’s intended to quickly and consistently get a racer down the track, pass after pass, season after season. It’s probably the only ‘race engine’ on the planet that has been through ‘durability schedule’ dyno testing to provide power for a long, long time.”
The rectangular port aluminum cylinder heads produce a race gas
only, 12 to 1 compression ratio, and combines with the GM tall-deck
plane-intake manifold and 1095 CFM Demon carburetor to deliver
720 horsepower at 6250 rpm and 685 lb.-ft. of torque at 4500 rpm.
Since both ZZ572 engines are built in multiple completion levels
– short block, base engine with intake and as a deluxe engine
with carburetor and distributor – they fit any budget, usage
and application.
Ecotec Supercharged 2.0-liter
For those looking to boost the performance of their small car
or off-road vehicle, GM Performance Parts offers a ready to install,
out of the crate solution. The Ecotec supercharged 2.0-liter for
2004 slams out an impressive 200 horsepower (estimated) at 6200
rpm and 200 lb.-ft. torque (estimated) at 4400 rpm.
At the heart of this powerful engine is an Eaton M62 helical Roots-type supercharger. GM Engineers chose the Eaton unit because of its optimum response characteristics and ease of “packaging” with the Ecotec architecture. With a maximum boost of 12 pounds, and an air to water intercooler, this unit delivers enhanced power and reduces a supercharged engine’s propensity to “knock” at high boost levels.
To attain the durability targets, the Ecotec supercharged 2.0-liter received upgraded components in critical stress areas. Experience in the tortuous crucible of the NHRA’s Championship Drag Racing series – where Ecotec has developed a “bullet-proof” reputation as a formidable powerplant for front-wheel drive dragsters – told engineers where the production supercharged Ecotec would most benefit from heavy-duty components. The result: a package built to deliver power on demand time after time, year after year.
Consumers can purchase GM Performance Parts engines from any GM dealership. To locate the closest dealer, call 1-800-GM USE US or visit www.gmaccessorieszone.com.
| ZZ572/620 | ZZ572/720 | ||
| Horsepower | 620 @ 5500 rpm | 720 @ 6250 rpm | |
| Torque | 650 lb-ft @ 4500 rpm | 685 lb-ft @ 4500 rpm | |
| Max rpm Recommended | 6000 rpm | 6750 rpm | |
| Compression Ratio | 9.6:1 | 12:1 | |
| Block | new Sportsman Tall Deck Bowtie Gen VI 10.200” deck height | new Sportsman Tall Deck Bowtie Gen VI 10.200” deck height | |
| Bore | 4.560” | 4.560” | |
| Stroke | 4.375” | 4.375” | |
| Crankshaft | forged 4340 steel | forged 4340 steel | |
| Connecting Rods | forged 4340 steel H-beam style shot peened |
forged 4340 steel H-beam style shot peened |
|
| Pistons | forged aluminum full floating wrist pin |
forged aluminum full floating wrist pin |
|
| Piston Rings | plasma-moly rings | plasma-moly rings | |
| Camshaft | hydraulic roller valve lift: 632” l, 632” E duration @ .050” 254°l, 264° E |
mechanical roller valve lift: .714” l, .714” E duration @ .050” 266°l, .274° E |
|
| Lifters | hydraulic roller tappet | mechanical roller tappet | |
| Cylinder Heads | aluminum rectangular port 118cc combustion chamber |
aluminum rectangular port 118cc combustion chamber |
|
| Intake Valves | 2.25” stainless steel | 2.25” stainless steel | |
| Exhaust Valves | 1.88” stainless steel | 1.88” stainless steel | |
| Valve Springs | dual valve springs 1.540” coil diameter 1.800” installed height 197 lbs. seat pressure |
dual valve springs 1.567” coil diameter 2.050” installed height 230 lbs. seat pressure |
|
| Spring Retainers | hardened chromemoly steel | hardened chromemoly steel | |
| Rocker Arms | aluminum roller rockers 1.7:1 ratio | aluminum roller rockers 1.7:1 ratio | |
| Push Rods | high performance one piece | high performance one piece | |
| Intake Manifold | new aluminum tall deck single plane 4150 series carburetor | aluminum tall deck single plane 4500 series carburetor | |
| Carburetor | 850cfm, mechanical secondary | 1095cfm, mechanical secondary | |
| Rear Main Seal | new one-piece design | new one-piece design | |
| Windage Tray | new, screened and louvered | new, screened and louvered | |
| Damper | high rpm torsional damper | high rpm torsional damper | |
| Distributor | H.E.I | multiple spark discharge | |
| Ignition Timing | 36º total advance | 36º total advance | |
| Spark Plugs | R42XLS | R42XLS | |
| Fuel | 92 octane | race fuel | |
| Part Number for ZZ572/620 | Description | ||
| 12499190 | partial (9:1 comp) | ||
| 12498792 | base (9:1 comp) | ||
| 12498793 | deluxe complete (9:1 comp) | ||
| Part Number for ZZ572/720 | Description | ||
| 12498825 | partial (12:1 comp) | ||
| 12498826 | base (12:1 comp) | ||
| 12498827 | deluxe complete (12:1 comp) | ||
Ecotec supercharged 2.0-liter specifications:
| Part number | |
| Type | 2.0L I-4 supercharged |
| Displacement | 1998cc (122 ci) |
| Compression ratio | 9.5:1 |
| Valve configuration | dual overhead camshafts (4 valves per cylinder) |
| Assembly site | Kaiserslautern, |
| Valve lifters | hydraulic roller finger follower |
| Firing order | 1 - 3 - 4 - 2 |
| Bore x stroke | 86 x 86mm |
| Fuel system | sequential fuel injection with high pressure (56 psi) |
| Horsepower | 200 hp (149 kw) @ 6200 rpm (estimate) |
| Torque | 200 lb-ft (271 Nm) @ 4400 rpm (estimate) |
| Fuel shut off | 6500 rpm |
| Emissions controls | three-way catalyst |
| Applications | Saturn ION Red Line |
| MATERIALS | |
| Block | cast aluminum with cast iron cylinder liners |
| Cylinder head | cast aluminum |
| Intake manifold | aluminum |
| Exhaust manifold | cast iron |
| Crankshaft | forged steel with induction hardened fillet |
| Camshaft | cast iron |
| Connecting rods | forged steel |
| Additional features | extended life platinum spark plugs and coolant electronic throttle control |