Will 1995 L99 Chevy heads bolt on a old 1983 350 block thay look the same on the out side. i can get a set for free and figure thay would have a 56cc chamber i want to run them on my demo engine hlp?
Yes, they will bolt on, but no, they will not work. They are intended for a reverse flow cooling system, and also the intake bolt pattern is different from the pre-86 small blocks.
Buses are built to order, so the customer chooses from a list of available features. The aforementioned 454 big block had been discontinued by the 2011 model year, and 2000 was the last MY that engine was available in the Chevrolet Express (which would be the chassis used for a school bus). If it has a gas engine, it most likely has the 6.0. The 4.3 V6, 4.8 V8, and 5.3 V8 are other possibilities…
The Vortec 5300 (325.1 cu in) is a GM V-8 truck engine. Vortec 5300s are built in St. Catharines, Ontario and Romulus, Michigan. First introduced as Generation III in 1999, the Generation IV Vortec 5300 engines share all the improvements and refinements found in other Generation IV engines. At present, six versions of the 5300 engine are in production: 3 iron blocks (LY5 LMG, and LMF) and 4 aluminum blocks (LH6, LH8,LH9 and LC9).