four valves per cylinder. The engine substituted the standard camshaft for a chain driven intermediate shaft, which drives four overhead cams via a cogged belt. Adapting the 60°pushrod block for the LQ1's overhead cams significantly increased packaged engine height. Bore was increased to , and the engine's stroke was retained. Only a few interchangeable parts are use between this DOHC engine and other members of the 60° family, primarily the connecting rods and crankshaft. The heads and intake manifolds were redesigned for the 1996 model year, incorporating a larger throttle body and plenum area, slightly longer intake runners, cloverleaf combustion chambers, and larger "pill"-shaped exhaust ports. Camshafts and cam timing were also revised for the new, higher-rpm powerband. Optional from 1991 to 1993 was a Getrag 284 five-speed manual transaxle, which was also exclusive to the GM W platform and was available only with the LQ1. The electronically controlled Hydramatic 4T60-E four-speed automatic transaxle was the alternative, used during the entire production run with the exception of the 1997 Monte Carlo Z34 and 1997 Lumina LTZ, which received the 4T65-E. Applications: 1991–1997 Chevrolet Lumina 1995–1997 Chevrolet Monte Carlo 1991–1996 Oldsmobile Cutlass Supreme 1991–1996 Pontiac Grand Prix Generation III The third generation of the 60° engine was introduced in the 1993 Oldsmobile Cutlass Supreme. Like its predecessors, it continued to use an overhead valve configuration with two valves per cylinder, a cast-iron cylinder block, aluminum cylinder heads, and an aluminum intake manifold. However, the heads and intake manifold were redesigned for better air flow, the cylinder block was stiffened, and the flat-tappets of the generation I and II engines were replaced with roller tappets. This generation also came standard with sequential multiport fuel injection and structural oil pan. 3.1 L/3100 L82 The L82 ("M-code") was an updated, SFI replacement for the MPFI LH0, produced from 1993 through 1999. It featured a structural oil pan, a stiffer redesigned engine block, sequential fuel injection, and revised aluminum heads. Output for the L82 was up , over the previous Gen II LH0, to at 5200 rpm and at 4000 rpm. Compression ratio for the L82 was 9.5:1 and the bore measured , while the stroke was giving it a displacement of . Applications: 1994–1999 Buick Century 1994–1996 Buick Regal 1994–1998 Buick Skylark 1994–1996 Chevrolet Beretta 1994–1996 Chevrolet Corsica 1995–1999 Chevrolet Lumina 1997–1999 Chevrolet Malibu 1995–1999 Chevrolet Monte Carlo 1994–1998 Oldsmobile Achieva 1997–1999 Oldsmobile Cutlass