Originally Posted by hustlerguy (Post 4425966)

? The size and weight of overhead cams?
Many less parts, many less contact or friction points, many less items to fail.
Size wise not any bigger
Weight wise I never weighted all the parts of a overhead cam system to a Heavy duty push rod setup but I'm pretty sure the overhead cam setup is lighter in that manner also.

Biggest limiting factor has always been rpm wear and tear on the valve train in a boat.
Overhead cams really get rid of that issue or at least make that issue much less of a issue.

Every new car / truck manufacturer run overhead cams, because there more reliable and they can spin the rpm up for more peak power.
Motorcycles have been that way for years.
Even small engine stuff on higher end mowers are going that direction.

Originally Posted by Wasted Income (Post 4425968)

I think the ford dohc engines gave OHC a bad name in regards to size. Looks massive compared to a lil old pushrod smallblock

http://i.imgur.com/rS2yXsg.jpg

http://i51.photobucket.com/albums/f3...t/IMG_5356.jpg

Originally Posted by DirtyMoney (Post 4426009)

My 368/700 runs 130.

Originally Posted by DirtyMoney (Post 4426009)

My 368/700 runs 130.

Originally Posted by Jupiter Sunsation (Post 4426017)

BTW that is the best looking 368 ever built! :D

I love the paint scheme with the black interior!

Originally Posted by hogie roll (Post 4426011)

You think you could get the output on a Ford OHC engine as high as you could on a BBC?