5.3lt.
I've not got all my schooling yet since my " ls7" is still an aluminum big block Chevy
But the 4.8/5.3/6.0 is all the same family of ls1 or something like that
i just went and googled.....the gen III ls1 was a 345.7 ci engine.
The first of the Generation IIIs, the LS1 was the progenitor of the new architecture design that would transform the entire Chevy V8 line and influence the last of the Big Blocks.
5.7 L
GM LS1 engine from the Chevrolet Camaro
GM LS1 engine from the Chevrolet Corvette C5
The Generation III 5.7 L shares little other than similar displacement, external dimensions, and rod bearings, with its predecessor (LT1). It is an all-aluminum 5,665 cc (5.665 L; 345.7 cu in) pushrod engine with a bore of 3.898 in (99.0 mm) and a stroke of 3.62 in (92 mm).[1]
LS1
When introduced in the 1997 Corvette the LS1 was rated at 345 hp (257 kW) at 5,600 rpm and 350 lbf·ft (470 N·m) at 4,400 rpm. After improvements to the intake and exhaust manifolds in 2001 the rating improved to 350 hp (260 kW) and 365 lbf·ft (495 N·m).[2] The LS1 was used in the Corvette from 97-04. It was also used in 98-02 GM F-Body (Camaro & Trans Am) cars with a rating of 305–325+ HP, which was rumored to be conservative. The extra horsepower was claimed to come from the intake ram-air effect available in the SS and WS6 models. In Australia, continuous modifications were made to the LS1 engine throughout its lifetime, reaching 382 bhp (285 kW) in the HSV's YII series, and a Callaway modified version named "C4B" was fitted to HSV GTS models producing 402 bhp (300 kW).
