The Chevy 454 short-block option, priced at $5,481.69, provides the same four-bolt main cast-iron engine block and rotating assembly as the $8,971.76 454HO complete crate engine option.

Additionally, part #3965774 454 LS7 engine was a ³long block² crate engine, which means it came less intake manifold, distributor, ignition, carb, starter and water pump. But oh my, what a buy ...

Next up, the 454 HO delivers 438 hp at 5,300 rpm and 500 lb-ft ... big daddy ZZ632/1000 is the largest and most potent crate engine in Chevrolet’s long and illustrious history.

A: Bob, I say with humility you came to the right person! I bought this exact same crate engine in March of 1979, part #3965774, from RC Campbell Chevrolet in Shamokin, Pennsylvania, for $1,497 total.

Rare LS-7 Crate Engine Finally Fired Up After Sitting in a GM Crate for 44 Years. A N.O.S. LS-7 454 big-block Chevy from 1979 runs for the first time at Westech Performance—read what happens!

XCH was a designation for a Chevrolet parts crate engine sold over the counter by dealers and is commonly known as the LS7. Again, the holy grail of big-block engines of the day.

I bought this exact same crate engine in March of 1979, part #3965774, from RC Campbell Chevrolet in Shamokin, Pennsylvania, for $1,497 total. It was a special high-performance 454-inch big block ...