In a message dated 11/5/98 5:24:32 PM Eastern Standard Time, spectric at globalnet.co.uk writes: > > I have a 1976 Pontiac Firebird with a 350 CI engine, is this engine GM > or Chevy? The simplest way I can think of is: Spark plugs ABOVE exhaust manifold = Pontiac V8 Spark plugs BELOW exhaust manifold = Chevy V8 assuming it is one of those two.. HTH Mike V