Originally Posted by 19HoosierDaddies67
... Are you saying this is a 330HP boat motor?
Would the Cam be different for a boat?
Can this be installed in a car?
Is the rotation different in a boat motor?
Strangely this came with a manual flex-plate, wouldn't that be strange to have included on a boat motor?
Yes, my cross-reference lists it as 330HP - and 'at worst' it would be 300HP at lowest.
"Marine" cams are generally a 'torque' biased design VS. HP and are spec.'d to generate peaks at slightly lower RPM ranges that 'auto' type cams.
They also generally have longer LSA's (@112 min.) that a similar 'auto' grind of the same HP range. This helps prevent reversion issues and helps bring the Torque peaks in a bit lower in the power ranges.
They are fully suitable for use in a 'street' build also, the slightly noticeable idle is often desired anyway.
Many GM 'Performance Marine' cams are supplied by Crane Corp.
Yes, they are fully suitable for auto use also. All openings and ports required for auto sensors, hose connections and other fittings are usually there, but some may be plugged if they weren't needed in a marine application.
Mounts and other items are the same.
This is a "RH" (right-hand) rotation unit as indicated in data. That is the same as required for most automotive applications, but in 'car' use we refer to it as a "Clockwise" rotation ... same thing ...
If it was a "LH" unit it could be converted to 'RH' with a cam/drive change.
"Manual - Flex Plate
" ... hmmmm - most automotive 'manual' transmissions require a solid 'flywheel' vs. a light-weight 'flex-plate', that mounts the torque-convertor, unit that is usually found in automatic applications.
But, marine engines do use both flywheels and flex-plates depending on the drive system.
The common 'Velvet" drive can use a flexplate, with a marine damper assembly attached via a hub - these actually resemble a standard clutch disc minus the friction material and are used as a solid connector with the inner springs acting as vibration dampers during operation.
These are direct drive connection and do not disengage as a clutch system would.
I did not find a spec. saying what this engine was supplied with.
I have never had any quam with using a 'marine' assembly in a vehicle or visa-versa.
What matters are the fittings and components are selected for that use and installed properly.
Surprising to many, just because it's a 'Marine' engine, it may-not contain any HP or HD designs that are 'givens' in HP automotive applications.
Many are 2-bolt mains vs. 4. And often the pistons and other crank components are cast vs. the 'forged' offerings one might expect.
I believe I saw this engine is a 2-bolt with other cast internals ...
Hope some of that helps.