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Old 12-31-2006, 11:41 PM
E30tdf E30tdf is offline
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Question 460 MODS - Best Bang for Buck

I'd like to hear what one can do (after market external bolt ons) to a carbureted 460 for performance that gets the most bang for $$ spent. (Examples: Intake, Exhaust, etc.) ??
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Old 01-01-2007, 12:10 AM
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Define "Best bang for the buck"

Technically I would think the most power for money spent would be a super charger, which is bolt on

But if your talking about "low" cost. . .I'd say headers/exhuast, then a straight up timing set, then recurved distributor, then grinding the smog bumps out of the exhuast ports, THEN intake/carb
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Old 01-01-2007, 12:19 AM
E30tdf E30tdf is offline
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Thumbs up Good Tips - Thanks

I have done 2 of those:

1) No smog pumps (used a set of 83-84 headers without the air holes)
2) Straight up timing gear is in.

SO I guess a bigger single and less restrictive muffler or dual exhaust might help it breath a little better, eh.

Any recommendations on intakes? I have a 600 cfm holley 4150 on the stock intake.

Is there a site anywhere giving porting instructions for the exhaust ports?

Last edited by E30tdf; 01-01-2007 at 12:24 AM. Reason: spelling
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Old 01-01-2007, 12:40 AM
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Anything to help it exhale to a point is good. You can over do your exhuast though, I'm no expert so I'm not going to rattle off any diameters for you. Maybe a search can guide you there or a more knowledgeable member will jump in here. Same goes for the carb/intake. I'm still learning as well, and I don't want to over carb your motor If your operating in the stock RPM range though, money spent on the intake/carb might be better spent else where. I don't think these motors ever had a problem getting air in until you start messing with cam duration and porting heads.

Wish I coulda been more of a help

EDIT: Check this site out http://diyporting.com/
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Last edited by Franken-Truck; 01-01-2007 at 12:50 AM.
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Old 01-01-2007, 01:02 AM
T.R.Bauer T.R.Bauer is offline
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The best bang for the buck is NO2....sometimes it literally goes bang.
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Old 01-01-2007, 01:58 AM
Superdave Superdave is offline
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Here is a link to look at some exhaust recommendations.

http://performanceunlimited.com/docu...austguide.html
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Old 01-01-2007, 09:50 AM
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ive got weiand stealth and a 750 holley with a nitruos express 200hp plate on a stock botom end and havent had any trouble out of it yet it on my 71. before i spooled the rearend it would dangnear do an endless one wheel peel.every thing cost me less than a grand to do.if you actualy cared about blowin the engine(i dont have spares) i wouldnt run over a 150hp shot tho
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Old 01-02-2007, 01:24 PM
T.R.Bauer T.R.Bauer is offline
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Like I said...just go for the laughing gas. It is cheap and fun and by far the most "bang" for the buck. Besides that, you can pretend you're a dentist
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Old 01-02-2007, 06:37 PM
stngh8r stngh8r is offline
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Smile Bolt ons

->N20 always helps!

->It seems that the consensus around the FTE forum is that headers help alot. Finish off the headers with a nice 4" diesel catback(nice mandrel bends are nice too) or custom 3" true duals with some high flow straight trough mufflers.

->Carb spacer maybe? Its cheap too.

->Under drive pulley? I dont know if anyone even makes one, just shooting from the hip here.

->construct some sort of cold air system to reduce the intake air temperatures, and run a 180* thermostat.

->good ingition and fine tuning can go along ways
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Old 01-24-2007, 05:03 AM
E30tdf E30tdf is offline
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Thanks for all the tips! Maybe the post will help others as well.
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Old 01-25-2007, 11:34 AM
1969fordguy 1969fordguy is offline
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What year engine? What vehicle is it in?
Depending on what you have I would upgrade the intake to an aluminum dual plane manifold. Maybe a Weiand Stealth or Edelbock Performer. Headers would be the #2 upgrade. After these two perhaps some nitrous.
Used parts can save you money too, sometimes good stuff shows up in the classified ads in this site.
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Old 01-25-2007, 11:29 PM
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you can get an underdrive from ebay... they have them avail every once in a while (v-belt-single or dual sheave). a better distributor can help (HEI), plus higher compression (9-10:1) will make it run alot better. of course, headers and intake will always help. then, spend a little bit of time getting it all tuned in, you'll be surprised. nitrous is a good , affordable alternative, but you have to consider your comp. ratio, timing, spark plug temp, and engine temp (you could could modify these to get impressive results w/o the nitro). but funny gas is a blast.
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Old 01-26-2007, 10:20 AM
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yeah it is fun the only thing i dont like about it is the 30 mile ride and the 50bucks it cost to refill the 20lb bottle.be for i installed a spool in the rearend a 1/4 mile one wheel peal was very possible.now with good tire and spool about a block long
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Old 01-26-2007, 10:20 AM
 
 
 
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