Hi Sutphen, My question is what constitutes a 3/4 race cam. Things have changed since the 1960s when I knew what a three-quarter race cam was but that’s progress. My question is is the camshaft from a 525 MerCruiser going to give me what I need or what I want. That’s what I don’t know. Among other things

Not to throw shade on myself or my offshoreonly.com brothers and sisters but call the experts at Comp Cam, Clay Smith or Brian Tooley Racing and see what they recommend. Unless you really like swapping cams I'd want to get it right the first go round. My guess is their response will be WTF. On a side note you could just add fuel injection and program the idle instability into the programming.

Thank you

Swapping to a new/upgraded hyd roller cam requires a lot more than just a cam. You'll have $3k into this swap to do it right.

Thanks Griff. Between the cylinder head porting roller rockers and lifters ,exhaust changed to , I got it I’ve had a number of engines built for me even one for my cobra which is a 427 550 horse but this time being lazy I’m being told that the cam swap to a crane cam 168741 would do almost as good without having to do everything. The engine only has 32 hours on a rebuild at which time he put in a little wild or Kim and a 177 blower. But I have no idea what else he’s done which would require a total rip down of the motor to find out I was thinking about a mother thumper or a big mother thumper. This mechanic wants to put the crane cam 168741 in saying that it’ll give me what I want but I just don’t think so. Thanks for the reply

Dry exhaust.

Mother Thumper cam with a supercharger ? Lol

Mother Thumper Cam with typical marine exhaust ? Lol

Mother Thumper Cam 800rpm to shift in/out a Bravo ? Lol

Let me be a guy with a little reality here by saying Lol.

Im not and engine builder nor do i play one on tv... but a blower gives surge at idle and isnt making boost at idle .. if you want raspy.. ditch the belt driven intake manifold jack the compression up and dry pipes. Or get an mp3 of a top fuel dragster and a really loud stereo

Get a Cam that performs and works with your setup ....

Who really cares about what it sounds like if it is not right, not reliable, or blows the drive apart from a stupid high idle.

I knew they’d be an idiot somewhere. Reality is not your cup of tea, SB!lol