SBChevy Engine Types

[Adger Smith]

Chris,
The cam profile is usually not the same as truck & pass cars. It depends on the marine package & who did it. I have been told that a lot of the marine conversions were done by contract. GM furnished the parts.You can find the Date code cast on the block & heads & get a good feel for the production date.
Adger

[SSDiv6]

Originally Posted by Adger Smith

Chris,
The cam profile is usually not the same as truck & pass cars. It depends on the marine package & who did it. I have been told that a lot of the marine conversions were done by contract. GM furnished the parts.You can find the Date code cast on the block & heads & get a good feel for the production date.
Adger

...and a lot of marine parts have better performance than the OEM passenger car parts. One example is the Chrysler marine 318 engine. The intake manifold used is the same single plane intake used in the "D" Dart.



As a matter of fact, some years ago I was looking at a few Chevy NHRA Blueprint Specs, and found some of the GM marine intake part numbers used on the 305 and 350 engines.