Noise level? who cares about noise level!  ('cept 2SAv, keeps his noise in the 'rage just to satisfy the tree huggers!)

J/K Actually makes some sense, to the Green crowd maybe. But if you think about it, saving the world from noise pollution while running a gas guzzling, air polluting v-8, horsing around for no apparent reason on a lake or river seems a bit diverse from that theory, don't it? 

Ray

You can't use the charts to "reverse dyno" the engine.

Truth be told, if you are in fact running a D impeller, then you may well benefit from an upgrade. I'd find it hard to beleive that would be in there with a 460, myself. Your engine is simply stopping at 4800, probably, due to the ignition system (Especially if points or theres an RPM limiter stopping you there), or valve springs, as someone recently showed me. You may well have, Should have, a hundred or a couple hundred more HP there to drive a more aggressive impeller!

The only way to know is to A: have the engine dyno'd, or B: step up the impeller and see what happens!

B is probably cheaper, first, and probably more correct.

I don't know about Jacuzzi's, but every Berk I've ever seen factory attached to ANY big block was an A impeller.

GPS'ing at 50 knots on a D impeller at 4800 rpm, I agree, not reasonable, really. But stranger things have happened I suppose!

Ray

I've been trying to understand them as well. Where pro's like Tom at JBP or Glenn (GT Jets) can usually guess what impeller is needed knowing the engine construction, but I think they're more of a guidline to get you into the ball park. Just me.

However, I've not been real clear as to whether you're supposed to aim the max HP you can reach, note that RPM and match it from there, or whether you're really supposed to match the RPM range you plan to operate then match the HP you generate at that RPM to select.

I guess you can read it either way, in reality, and maybe that's the point of it. Depends on what you plan to do with the boat as to how you read it.

Ray

Good eye Tony! I was eyeballin the whole pump, bowl and all.

Ray

Yeah I know huh?   

Actually they're all kinda happening together which is nuts.  This thing just looked like a pretty good buy, it'll wait awhile, lol.

Yeah, it'll get ripped down, some new threads, but later. Rest of it looks pretty good! Got these other two here to get done and quickly, lol.

Then I gotta figure which ones I'm keeping after all this crap!

What's wrong with the twisties? 

Ray

Thanks guys. We've actually had a couple sessions. Becca's fine with it and talks about Cin a lot, but RJ doesn't. Might be something right there!

LMAO John, maybe I shoulda started out with Briggs & Strattons.......................

Ray

LMAO I am STILL laughing at this. Tried to contain myself, and let everyone that knew you have their fun, but MAN!

And STILL no pics of it! I was Sooooo looking forward!

Gotta ask though, did the process cause any reddening of the cheeks, swelling and redening of the nose, legthening of the feet and include a desire to wear barber shop pole colored tights? 

You Haven't been to any McDonald's drive thru's and ordered a Hamburglar recently have you?

OK I'm done.........Maybe..................

Ray

Could be a lot of things, Not that familiar with outdrives, GT would be the pro there, and be able to tell you if its way too much prop or not for a 3.0.

Otherwise, on the engine, could be fuel issues, I'd be more beleiving an ignition issue, such as not advancing (If mech/vacuum advance and not electronic), spark scatter (bad points, incorrectly installed points), timing, etc. Then look into the fuel system. Secondaries not opening, clogged filters, bad pump.

Good luck with it Jimmy!

Ray

Where'd ya get the deck coevr and seat covers?

I'd be leaving Phoenix too for those!

Ray

The thing is also Ray, how many chebbies and ferds out there compared to the olds

Yeah, and I understand that, and kinda factored that in before my response, but really, and Brad or his crew would be the guys to ask, I honestly beleive, overall, the most common single comment when anyone posts about their Olds is, "It's only an Olds" or " What can I expect/or do to the olds to make it run better". That's where we all chime in, me included, basically declaring the Olds dead, upgrade to sumpin else because of the 'oiling issues at sustained high RPM".

Along the same thought though, I have only ever bought 1 running boat, (out of like this one with a 460 Ford, yes, and you all know what happened to that one. Wasn't an engine deal, I get that. The others have all had either no engine or blown up engines orsome combination of the two. All Chebbies and Ferds. One of the most common things I've noticed with the new guys I see posting on here bought, or have, running boats with OLDS engines in them. Does anyone know when they STOPPED making the 455 olds? Wasn't it like 1978? Rarely do you see anyone else posting about buying a running Ford or Chevy for near the price they're getting the Olds boats for. And these boats have been running forever!

So Logic and deductive reasoning would say the Olds is MORE than viable as a boat engine, really. Just don't hot rod it too much, which, fortunately, Olds performance parts are harder to find and expensive, which also might play into this debate.

I think we all underestimate the Olds engine because we try and hot rod to the max whatever we can, and it doesn't lend itself easily to that sort of behaviour. But as far as a reliable OEM platform? From what I've seen in my few months on this site, it's second to NONE in durability and RELIABILITY in it's stock, or slightly warmed over form in a marine application.

The laws of averages and assumption do apply, and since there were FAR more Chebbies and Ferds tossed into these boats in the 70's and 80's, they'd be more proliferant. Being that the Olds is kinda the odd man out, I find it simply amazing , and testifying, so many running examples are finding their way on here with the Newbies.

The Olds is obviously due more credit than any of us is giving it!

Just my .02

Ray

Thread jack over! Again, Welcome! We all need a sleepover boat, More of them if you ask me so we don't need motel rooms for these little gatherings, lol (Thought about renting a houseboat for the next Mead gathering so we could all just tie up and party there!)

Never seen anything quite like that. Tommy'd be the one who'd know, But with the Center riser exhaust, Motorsport style Valve covers, might be a little more than your average marine 460. 

But probably not, who knows? Casting numbers might help a BIT, but prolly a d1ve (block), d3ve a2a (Head) combo (Std marine engines mostly had these I think) So unless a hotter cam, more compression was added, you know where it's going, lol.

Regardless, you probably have a standard Hardin Marine 320HP 460.  Still a stout engine, and can be hot rodded quite a bit with bolt on parts before you need to remove the engine and go inside it.

Did I mention it looked CLEAN? Dirty that pig up a bit would ya? Making us all look bad here..............

Ray

Right click the picture, left click the inline image tab (starts with [IMG]) right click that, click copy, then go to your reply window here and click paste.

So simple even a guy with a cow boat can do it.

Ray