Order Status & Returns
Gift Cards
Help Center
1-800-345-4545
Product Discontinued
CHEVROLET PERFORMANCEPART NUMBER: 809-12561723
350 ZZ4 HO Short Block Engine Assembly 10-1 Compression Ratio with 58cc Heads
Currently Unavailable
This product is no longer available. Please call customer service for assistance at 1-800-345-4545.
ZZ4 HO Short Block
- 350 ZZ4 HO Short Block Engine Assembly
- 10-1 Compression Ratio with 58cc Heads
- Not For Marine Applications
Part TypeEngine Short Block
BrandCHEVROLET PERFORMANCE
Package Height21.0
Package Width28.0
Package Length28.0
Weight299.0 PG
Part CategoryPerformance Parts
Main Journal Type350 mains
Crankshaft MaterialForged 4340 steel
Engine Block MaterialCast iron
Connecting Rod MaterialPowdered metal
Harmonic Balancer IncludedNo
QuantitySold individually
Flexplate IncludedNo
AssembledYes
Connecting Rod Beam StyleI-beam
Main Bolt Style4-bolt
Deck Height9.025 in (229.235 mm)
Flywheel IncludedNo
Engine BalanceInternal/External
Rear Main Seal Style1-piece
Short Block Piston StyleFlat top
Piston MaterialHypereutectic aluminum
Oil Pan IncludedNo
Timing Cover IncludedNo
Vendor Part Number12561723
Package Qty1
Package TypeEA
Items You Need
![Timing Cover for 1956-1986 Small Block Chevy and 90-Degree V6 [Polished Aluminum]](https://www.jegs.com/images/mini_200/500/555/555-50305.jpg)
![Rotating Engine Stand [1000 lb. Capacity]](https://www.jegs.com/images/mini_200/500/555/555-80059.jpg)
![Break-In/Engine Oil Supplement [12 oz. Bottle]](https://www.jegs.com/images/mini_200/500/555/555-28060.jpg)
![Engine Stand [1000 lb. Capacity]](https://www.jegs.com/images/mini_200/500/555/555-80040.jpg)
![Engine Assembly Lube [4 oz. Bottle]](https://www.jegs.com/images/mini_200/500/555/555-28000.jpg)
![Engine Load Leveler [1,000 lb.]](https://www.jegs.com/images/mini_200/500/555/555-80048.jpg)
![Engine Stand [1250 lb. Capacity]](https://www.jegs.com/images/mini_200/500/555/555-80041.jpg)
![Oil Pump Adjustable for Street, Strip, Race Applications [Small Block Chevy]](https://www.jegs.com/images/mini_200/500/555/555-23501.jpg)
Some parts are not legal for use in California or other states with similar laws / regulations
