speedchangesyou

Hey Guys how can you tell if your 500's are Bulldogs or not by the serial number........ thanks

RaggedEdge

Bulldogs and 500's are two entirely different engines. The Bulldogs are 540 CID while the 500's are only 500 CID. The serial numbers should tell you what you have.

jeff32

how many HP are the bulldogs ?

RaggedEdge

Merc rated them at 500 HP, same as the 500's. They were a stronger running engine though.

speedchangesyou

So who do I call at mercury to find out? Any phone numbers?
thanks

jeff32

serial number plus your local merc dealer

birdog

My Bulldog intake Manifolds have a 'TD" Cast after the brand Name..(tall Deck}

JaayTeee

The intake manifolds on the Bulldogs are black, the HP500's
are blue.

The flame arrestors on the Bulldogs say Bulldog

Bulldogs have a carb spacer under the carb,
HP500's dont.

speedchangesyou

Thanks Guys

aTX427

Get bulldogs if you can find them. They make the same power as the 500HP's, but will make a lot more power with a cam and heads.