<P> The new 1985 L98 350 added tuned - port fuel injection "TPI", which was standard on all 1985--1991 Corvettes . It was rated at 230 bhp for 1985--1986, 240 bhp for 1987 - 1989 (245 bhp with 3.08: 1 rear axle ratio (1988 - 1989 only)), and 245 bhp in 1990 - 1991 (250 bhp with 3.08: 1 rear axle). Aluminum cylinder heads (Corvette only) were released part way through the 1986 model run, modified for 1987 with D - ports, and continued through the end of L98 Corvette production in 1991 (still used on ZZx 350 crate engines until 2015 when the ZZ6 received the Fast Burn heads). The L98 V8 was optional on Jan.' 87 --' 92 Chevrolet Camaro & Pontiac Firebird models (rated at 225 hp (168 kW) - 245 hp (183 kW) and 330 lb ⋅ ft (447 N ⋅ m) - 345 lb ⋅ ft (468 N ⋅ m)) 1987 versions had 20 hp (15 kW) and 15 lb ⋅ ft (20 N ⋅ m) more and a change to hydraulic roller camshaft . Compression was up again in 1990 to 9.5: 1 Camaro / Firebird and 10: 1 Corvettes, but rated output stayed the same . </P> <P> The L05 was introduced in 1987 for use in Chevrolet / GMC trucks in the GMT400 (introduced in April 1987 as 1988 models) and the R / V series trucks such as the K5 Blazer, Suburban, and rounded - era pickups formerly classed as the C / K until 1991 which includes chassis cabs and 4 - door crew cabs . The L05 was also used in the G van models and the P30 Step vans . Additionally, the L05 was used in 9C1 - optioned police package Caprices, and in the following vehicles: </P> <Ul> <Li> 1992 / 1993 Buick Roadmaster sedan and station wagon </Li> <Li> 1990--1992 Cadillac Brougham (optional engine) </Li> <Li> 1993 Cadillac Fleetwood </Li> <Li> 1989 - 1993 Chevrolet Caprice 9C1 police package (roller cam); 1A2 - optioned special service station wagon </Li> <Li> 1992 / 1993 Chevrolet Caprice Wagon (optional engine) </Li> <Li> 1993 Chevrolet Caprice LTZ </Li> <Li> 1992 Oldsmobile Custom Cruiser Wagon (optional engine) </Li> <Li> 1995 - 1996 AM General Hummer H1 </Li> </Ul> <Li> 1992 / 1993 Buick Roadmaster sedan and station wagon </Li>

What is the standard bore for a chevy 350