ZZP Racing Short Block
- Your choice of pistons, rods, balance shafts, damper, flywheel
- Gen 3 block with ZZP's exclusive engine girdle
- Chrome moly rings
- OEM Flywheel bolts
- ATI balancer (overdrive or under drive) -if selected
- New bearings
- New seals
- New front cover & oil pump included
- Fully balanced rotating assembly
- Comp Cams break in oil
No Core Charge!
ZZPerformance short blocks are the industry's best choice for performance, strength and reliability. Every detail of the ZZP short block has been fine tuned for extremely long life and high performance. Each engine is built using the finest components, eliminating factory weak points and upgrading everything needed to withstand the abuse of a driving enthusiast.
Our engines start with a GM block, disassemble and clean, install ZZP custom girdle, square deck, resurface deck to a finish finer than OEM, and we replace the oil plugs. If selected, the balance shafts are replaced with ZZP neutral balance shafts. Oiling to vital engine components is increased. On the stroker engine option the GM crankshaft is modified for use in this application. Improvements are made to ensure reliable operation.
Only ZZP has been to 898whp without failure.
Pistons: This will determine what style piston you want installed. First, you would chose the correct style, LSJ or LNF/LHU direct injected. Then there is a bore option, if you want a 2.0L select 86mm, or if you want a 2.1 or 2.4 you will select 88mm. Next, the LSJ engine has two different compression ratios, we recommend higher compression for supercharged setups, and lower compression for turbo applications. If you are limited to 91 octane, instead of 93 octane, we also recommend the lower compression option.
Rods: The rods are interchangeable between the LSJ and LNF/LHU. However the rod you select here will determine if you are going to be 2.0, 2.2, or 2.4 liter when teh correct matching piston is selected. For example, if you select a 86mm piston and you select a 2.0 rod, then you will be 2.0 liter, if you select 88mm piston and you select a 2.0 rod, then you will be 2.1 liter, and finally if you select 88mm piston and 2.4 rod, then you will be 2.4 liter.
Balance Shafts: If you select our Neutral Balance Shafts then we will install them for free, if you select None, then the short block will come with new stock balance shafts.
Crank Pulley/Balancer: If you select an ATI balancer your short block will come with one, if you select stock, then it will void the warranty and come with a new stock crank pulley.
Flywheel/Flexplate: This will allow you to chose the flywheel that your engine can come with. You will need the correct flywheel for the crank that the engine comes with and the transmission that you are planning on using. The F35 is the factory 2.0 liter Cobalt/Ion trans, the F23 is the factory 2.2/2.4 trans, and the '11+ Regal uses a F40 trans. If you have our F40 transmission conversion kit installed in your Cobalt/Ion, then you would need to select the F40 flywheel option. Now if you have the F35 trans and are ordering our 2.4 liter stroker short block, then you will need the specific "Stroker" flywheel.
Shipping: This will allow you to either come pick up the engine for no shipping charge or select a freight shipping option. We use R&L Carriers.
Important break in procedure:
We recommend that you install the engine, fill with oil, then leave the injector harness unplugged and turn engine over until the oil pressure light goes out. This ensures that you are starting the engine with full oil pressure.
When the engine is running, at light throttle, bring it up to 4500rpm, then coast down to near idle(still in gear), then 5000, then 5500, then 6000, and 6500 each time letting it coast down to idle. This will help seat the rings. Then after a couple heat cycles, start running it under power.
We balance the flywheel with it mounted on the crankshaft, on the same machine. Also to 1/2 gram. (If a new flywheel is purchased or the customer's flywheel is sent in.)
The pistons and pins are weight matched to 1/2 gram.
The small end of the connecting rod and big end of the rod are weighed separately and matched to 1/2 gram.