More power

« **on:** February 14, 2012, 03:25:39 PM »

Okay, so I have a stock 460 with logs and snails in my day cruiser. And now that I got a new job I have some spending money, so I'm thinking I want a little more power out of the float. Nothing crazy, nothing too expensive, and hopefully something I can do myself.
So please give me some ideas on what kind of stuff to look into and for. I'm pretty new to engines so for the more part I'm pretty lose and where to go.
The last time I had it out it was running about 43 at 4500rpm I believe. I have been having some issues with it running at idle, started to take the carb apart and figured out it had real recently rebuilt, so now I'm not sure what to do.
**off topic but I'm also looking for a diverter.

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« **Reply #1 on:** February 14, 2012, 04:31:32 PM »

Even just adding a diverter will help you find that sweet spot on plane.

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« **Reply #2 on:** February 14, 2012, 07:29:38 PM »

Quote from: BIG JOHNSON on February 14, 2012, 04:31:32 PM

Even just adding a diverter will help you find that sweet spot on plane.

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Yeah, that's one thing I know I'm going to do. Just trying to get my trailer fixed first before I go take it down to Tom and get fitted with a diverter.
My problem is I know my boat isn't worth too much more than what I paid for it, so I don't want to go dumping a bunch of money into her. But I would really like to be able to beat my dads boat. Haha

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« **Reply #3 on:** February 14, 2012, 08:50:55 PM »

I'm not sure where you are at but place diverter is in la Habra. You can just cut the middle man out and do it yourself. When you do get the diverter get a hydraulic one, it's worth it. There was a guy on PB selling one brand new for 650 which is CHEAP. I don't know what pump you have either so i could be full of crap. Also like I said I have that intake manifold for a 460 ford :-)

« **Reply #4 on:** February 14, 2012, 08:52:05 PM »

Quote from: More2LifeThanMPG on February 14, 2012, 07:29:38 PM

My problem is I know my boat isn't worth too much more than what I paid for it, so I don't want to go dumping a bunch of money into her.

gotta stop thinking about a boat like its an investment that will pay off.

not to mention if its engine stuff that gets upgraded you can always pluck the motor out of your boat and sell it as a hull and put your motor into someone elses hull. plenty of people are willing to seperate motor from boats.

« **Reply #5 on:** February 14, 2012, 09:38:46 PM »

If you're only running 43mph @ 4500 rpm's i'd be looking at the pump and the bottom of the boat. Are you sure you weren't dragging an anchor

« **Reply #6 on:** February 15, 2012, 08:45:31 AM »

Quote from: Beaveretriever on February 14, 2012, 08:50:55 PM

I'm not sure where you are at but place diverter is in la Habra. You can just cut the middle man out and do it yourself. When you do get the diverter get a hydraulic one, it's worth it. There was a guy on PB selling one brand new for 650 which is CHEAP. I don't know what pump you have either so i could be full of crap. Also like I said I have that intake manifold for a 460 ford :-)

Yeah I was going to got to Tom directly, talked to him when I was at Lake Ming a few months back.
And yeah saw that one a little to late, it's already sold. Haha

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« **Reply #7 on:** February 15, 2012, 08:48:09 AM »

Quote from: ka0tyk on February 14, 2012, 08:52:05 PM

gotta stop thinking about a boat like its an investment that will pay off.

not to mention if its engine stuff that gets upgraded you can always pluck the motor out of your boat and sell it as a hull and put your motor into someone elses hull. plenty of people are willing to seperate motor from boats.

Oh I know it's not an investment, that I'll get my money out of. But it's like pouring $20k into a DD civic. It just doesn't make since... Plus I don't have all that much to drop anyways.

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« **Reply #8 on:** February 15, 2012, 08:50:39 AM »

Quote from: 76 Bonneville on February 14, 2012, 09:38:46 PM

If you're only running 43mph @ 4500 rpm's i'd be looking at the pump and the bottom of the boat. Are you sure you weren't dragging an anchor

Ha I'm not 100% positive on those stats, it's just want I thought I remembered. Plus it's a big 20' Southwind, I'm not expecting too much. Just looking to have a good time with friends and family, make some memory's, oh and be able to beat my dad. :-)

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« **Reply #9 on:** February 15, 2012, 08:51:26 AM »

Quote from: More2LifeThanMPG on February 15, 2012, 08:45:31 AM

Yeah I was going to got to Tom directly, talked to him when I was at Lake Ming a few months back.
And yeah saw that one a little to late, it's already sold. Haha

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I would go to place diverter a d cut the middle man out. It will save you money. I did an install on my old spectra. There are pictures and stuff on here somewhere. It's super simple. Save where you can save and spend the Money where you need to spend the money.

« **Reply #10 on:** February 15, 2012, 10:56:00 AM »

Quote from: More2LifeThanMPG on February 14, 2012, 03:25:39 PM

Okay, so I have a stock 460 with logs and snails in my day cruiser. And now that I got a new job I have some spending money, so I'm thinking I want a little more power out of the float. Nothing crazy, nothing too expensive, and hopefully something I can do myself.
So please give me some ideas on what kind of stuff to look into and for. I'm pretty new to engines so for the more part I'm pretty lose and where to go.
The last time I had it out it was running about 43 at 4500rpm I believe. I have been having some issues with it running at idle, started to take the carb apart and figured out it had real recently rebuilt, so now I'm not sure what to do.

It depends a lot on what you have for a stock 460 (passenger car 460 or a true marine 460). A properly jetted Holley 850 double pumper and a distributor with an aggressive advance curve can help a lot, but for the most part while OEM 460s might have all the design necessary to get good power it's still necessary to go insde them to really wake them up...even if only rubbing on the stock parts.

LO

p.s.: if you have an engine hatch, the 850 double pumper is not coast guard legal and you'll need a coast guard approved marine specific carburetor.

« **Reply #11 on:** February 15, 2012, 01:04:27 PM »

I would start with the diverter if you're on a budget. It will help your overall performance. Even if you can only run mid 40's, its more fun with a fatty roost.

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« **Reply #12 on:** February 15, 2012, 01:09:46 PM »

Quote from: LakesOnly on February 15, 2012, 10:56:00 AM

It depends a lot on what you have for a stock 460 (passenger car 460 or a true marine 460). A properly jetted Holley 850 double pumper and a distributor with an aggressive advance curve can help a lot, but for the most part while OEM 460s might have all the design necessary to get good power it's still necessary to go insde them to really wake them up...even if only rubbing on the stock parts.

LO

p.s.: if you have an engine hatch, the 850 double pumper is not coast guard legal and you'll need a coast guard approved marine specific carburetor.

I do believe I have a true harman marine 460, and I do have a hatch. But that carb sounds like more trouble than it might be worth. I've attached a few pictures of my current carb.

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« **Reply #13 on:** February 15, 2012, 01:15:08 PM »

Quote from: BIG JOHNSON on February 15, 2012, 01:04:27 PM

I would start with the diverter if you're on a budget. It will help your overall performance. Even if you can only run mid 40's, its more fun with a fatty roost.

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Yeah, the plan was to go pick up a hydraulic diverter this weekend (hopefully). And the diverter is already counted in the engine make over budget. It's as good as sent, I'm looking to still do some work on the engine. And as stated above if that just means break not open and clean everything up a little, or full new parts.

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« **Reply #14 on:** February 15, 2012, 02:36:10 PM »

Judging by your last post and also the pics in it, I would now say to use Holley 0-80443 850 Marine Double Pumper and an aftermarket double-roller chain which puts your cam straight-up (or advance the cam as far advanced as the double-roller's lower gear keyways will allow)....and advance your distributor's ignition timing. This applies whether you decide to go deeper into your engine or not.

LO

« **Reply #15 on:** February 15, 2012, 02:53:08 PM »

Quote from: LakesOnly on February 15, 2012, 02:36:10 PM

Judging by your last post and also the pics in it, I would now say to use Holley 0-80443 850 Marine Double Pumper and an aftermarket double-roller chain which puts your cam straight-up (or advance the cam as far advanced as the double-roller's lower gear keyways will allow)....and advance your distributor's ignition timing. This applies whether you decide to go deeper into your engine or not.

LO

I totally agree, this comes from emissions laws and restrictions, the way Ford lowered emissions (and made less HP) was to retard the cam timing at or about 1975..

The 850 double pumper would be a great addition IMHO, but if you're only trying to better top end speed, there wont be too much realized given the investment, the timing advancement on the cam as well as ignition will wake it up with relatively small expense.

Pay attention to the tune. There is typically a lot to be gained with just some simple adjustments. I have seen the cam timing change effect top RPM by as much as 400 revs per minute...Thats not small potatoes given it can be done in an evening and cost very little...

Just another thought...The ignition timing only needs to be in the lower index for starting purposes, so get the advance to be "all in" at a very low RPM (like <2000)..

One last random thought. Your vacuum secondary spring should be yellow....(the lightest one)...

Good luck.

GT

« **Reply #16 on:** February 15, 2012, 06:31:46 PM »

Humm, I'm not sure on the carb I've looked into them when I thought mine needed rebuilding and they are pretty expensive. And for not having any motor work currently wouldn't I need to step into a bigger carb? Like the motor has to be able to take the amount the carbs giving and the carb has to give enough for the motor that's it's not getting starved. Right?

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« **Reply #17 on:** February 15, 2012, 09:21:30 PM »

this will make it scoot

http://orangecounty.craigslist.org/boa/2830796464.html

« **Reply #18 on:** February 16, 2012, 01:40:41 AM »

Quote from: ka0tyk on February 15, 2012, 09:21:30 PM

this will make it scoot

http://orangecounty.craigslist.org/boa/2830796464.html

Oh god, that will Gyit! But please, that will require more commitment than a diverter and intake manifold. Get the diverter, try it out then see what the upcomming season draws to you. (please get the turbo.) I want to see someone have it because I can't right now.
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« **Reply #19 on:** February 16, 2012, 05:51:41 AM »

Looking at your carb it appears to be a stock 600CFM used on marine conversions. If you go to a 850 change the vent tubes from the old to the new that will vent the gas to the inside of the carb. Also I have a Weiand Stealth manifold, you pay the freight I will donate it to you.

« **Reply #20 on:** February 16, 2012, 07:13:26 PM »

Quote from: ka0tyk on February 15, 2012, 09:21:30 PM

this will make it scoot

http://orangecounty.craigslist.org/boa/2830796464.html

Haha, no matter how sweet that system would be. Not thinking it's going to fit under my hatch. Plus a twin turbo set up is a little extreme for me right now.

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« **Reply #21 on:** February 16, 2012, 07:15:46 PM »

Quote from: SS-201 on February 16, 2012, 05:51:41 AM

Looking at your carb it appears to be a stock 600CFM used on marine conversions. If you go to a 850 change the vent tubes from the old to the new that will vent the gas to the inside of the carb. Also I have a Weiand Stealth manifold, you pay the freight I will donate it to you.

I don't fully understand what you mean about the vents, but I think I'm sticking with my carb right now. And a new manifold isn't going to increase power, is it?

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« **Reply #22 on:** February 16, 2012, 09:39:42 PM »

I would be very interested in any other tips for affordable 460 horsepower. If I'm going to scour the swap meets and CL, what is the best aftermarket intake or is the SCJ steel one just as good? In my case I am going to have to build a whole motor, is there a particular head or crank that is worth looking for? Is there any budget minded tricks to machining the heads or crank that deliver bang for the buck?

Now if you will excuse me I gotta go drool over that CL turbo dealio. Damn you ka0tyk for posting that moto candy

« **Reply #23 on:** February 16, 2012, 10:02:13 PM »

Quote from: GlassCutter on February 16, 2012, 09:39:42 PM

I would be very interested in any other tips for affordable 460 horsepower. If I'm going to scour the swap meets and CL, what is the best aftermarket intake or is the SCJ steel one just as good? In my case I am going to have to build a whole motor, is there a particular head or crank that is worth looking for? Is there any budget minded tricks to machining the heads or crank that deliver bang for the buck?

Now if you will excuse me I gotta go drool over that CL turbo dealio. Damn you ka0tyk for posting that moto candy

you should swing by the long beach high perf swapmeet. i see a lot of BBF intake manifolds for like $100-150. some heads, dress up, carbs, etc. pretty hard deals to beat there.

« **Reply #24 on:** February 16, 2012, 11:14:58 PM »

Quote from: ka0tyk on February 16, 2012, 10:02:13 PM

you should swing by the long beach high perf swapmeet. i see a lot of BBF intake manifolds for like $100-150. some heads, dress up, carbs, etc. pretty hard deals to beat there.

That's this weekend right...?

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More2LifeThanMPG

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