Southern Performance Systems

Performance Authorized Reseller

Chevrolet Performance Big Block Crate Engines

ZZ427/480 Crate

The ZZ427/480 features the latest-generation block casting with four-bolt main caps, an all-forged rotating assembly, and a hydraulic roller camshaft instead of the original L88’s flat-tappet cam.

454 HO Crate

Chevrolet Performance's 454 HO crate engine is a Big-Block bargain, an affordable engine with performance specs that will make you think it’s 1970 all over again, including 438 horsepower and 500 lb.-ft. of torque.

ZZ454/440 Crate

Chevrolet Performance took the tough 454 HO and matched it with a set of higher-flow, oval-port aluminum cylinder heads to pick up an additional 30 horses.



HT502 Crate

Chevrolet Performance's HT502 crate engine is an affordable alternative with more power than the factory-installed Big-Block, producing a whopping 541 lb.-ft. of trailer-tugging torque.


502 HO Crate

With 461 horsepower and 558 lb.-ft. of torque, our 502 HO crate engine has power on tap for every need — from a ’69 Chevelle to a newer Suburban. What will you do with 461 horsepower and 558 lb.-ft. of torque from 502 HO crate engine?

ZZ502/502 Base

The ZZ502/502 Base is meant for the builder who wants the super-strong bottom end and high-flow aluminum oval-port cylinder heads, but also wants to finish the engine his or her way.


ZZ502/502 Deluxe

The ZZ502/502 Deluxe is one of the industry’s benchmark crate engines, offering excellent value and proven performance suitable for the street or strip. With more than 500 horsepower and 580 lb.ft. of torque, it demands you full attention.

ZZ527/620 Deluxe

There’s no replacement for displacement, the ZZ572/620 is the ultimate expression of Chevrolet Performance’s engineering capability, wrapped up in a soul-stirring combination of performance and attitude.


ZZ572/720R Deluxe

It is the king of all rat engines and is capable of pulling your bracket racer or heads-up challenger down the drag stripe in the 9-second range. With 727 hp at 6,300 rpm and 680 lb.-ft. at 4,900, you’ll make quite an impression.