In Memory of Harold
Join Date: Oct 2002
Location: Senatobia, MS, USA
Re: What's the difference between marine vs street cams?
Actually, it's the other way around.....
Most 'street' cams aren't suitable for marine use.
Because of low-speed docking needs and the problem with water entering the exhaust in low-vacuum engines, most marine cams are on 114 or 112 LSA. These work just fine on the street if you want a smoother idle and more vacuum, as well as a flatter torque curve. Many street racers don't, they want the lumpy idle and tremendous mid-range torque, and they use 110 LSAs, and even 108 LSAs.
The old UD BB288/296H10 was designed for Mercury Marine, they bought about a 1000 or so, until the 502 cam out. It was on a 110 LSA, and was at the limit for docking. Going 8° larger at .050 meant that you had to use Rhoades lifters to be able to dock. Vacuum was no problem because the engine did not use an underwater outlet.
Many of my marine cams are made on 114 LSA....