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5.0 Poor Boy Performance

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Old Sep 21, 2011 | 11:59 PM
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5.0 Poor Boy Performance

So I picked up a spare (complete ) 5.0 for $150. I've been looking into DIY porting/polishing on the heads and Im pretty confident about doing that myself. From what I've found, the truck lower intake seems to be plenty good enough. As for a cam, I wanted to go with a HO cam but that'll have to wait until after school. I just got my Flowtech headers and I am planning dual straights, with a X-pipe. The local shop always brags about them and I noticed a difference on my buddys 4.6, so I'll give it a try. Does anyone have any input on the build? Has anyone P&P'd the intake? And I know, the Flowtechs are garbage, but for $200, I cant complain... Also has anyone every fabbed up a DIY intake for these trucks? I dont want to spend hundreds on one
 
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Old Sep 22, 2011 | 07:25 AM
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You should be able to pick up the HO cam cheep , is your truck a roller now ?? if not you will need the retainer and the dog bones and lifters , push rods , steel dist gear , the block is roller ready , the 5.0 truck intake is good , the exhaust will help alot ....Lew
 
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Old Sep 22, 2011 | 07:31 AM
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I have an HO cam if your are interested.
 
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Old Sep 22, 2011 | 07:32 AM
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Depends what its going into, as an X-pipe is a hassle to try on a 4wd. As Lew said above, the intake sshould be fine, no need for some rice looking cone filter. As far as cam choice it depends on whether the truck is SD or MAF. If you have the engine apart to do head work, put the cam in then. No sense having to take it all apart in a few months again.
 
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Old Sep 22, 2011 | 07:35 AM
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I would honestly just use a Y pipe. With an X-pipe you will lose some of that low end grunt because of the loss of back pressure.
 
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Old Sep 22, 2011 | 08:52 AM
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Sorry guys, should've given a little more info on the truck. It's going into a '95 f250 2wd. I think that should be a roller block already. I was quoted at $425 for just a cam. Considering what the motor cost me, thats pretty expensive. I'll send you a PM, WhiteBeast. As for intake, it is a SD truck as far as I know. Twin intake tubes is a SD, right?
 
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Old Sep 22, 2011 | 08:57 AM
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If they stay seperated, the yes it is speed density, if they come together and connect to a MAF, then it's MAF. Unless your truck is a 95-96, its probably a SD truck.
 
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Old Sep 22, 2011 | 11:47 PM
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What are the visual differences between roller heads and non-roller heads? I cant find a build date on this block I have....Google isnt helping me out either
 
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Old Sep 23, 2011 | 12:02 AM
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Ok never mind, found it. The block is a '91 with flat tappets. That being said, if my current block/heads are roller and I want to P&P the non-roller heads, do I have everything I need to convert these non-roller heads to rollers when I install them? Is it too big of a chore?
 
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Old Sep 23, 2011 | 05:13 AM
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The heads are E 7s on both motors , the roller has nothing to do with the heads , the 95 has a good roller cam with all the roller parts , you can swap them to the other motor and make it a roller , see post #2.....
 
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Old Sep 23, 2011 | 07:27 AM
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You'll just have to get a machine shop to attach the spider plate as on the roller motors the valves are paired off to prevent valve float at higher rpms. Where are you located? I have a buddy who ports heads very well and has a great reputation that does them for $400.
 
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Old Sep 23, 2011 | 07:28 AM
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However mind you, the more you open the heads up, the tighter LSA cam you will need to keep that low end grunt.
 
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Old Sep 23, 2011 | 11:35 AM
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Originally Posted by TheWhiteBeast
You'll just have to get a machine shop to attach the spider plate as on the roller motors the valves are paired off to prevent valve float at higher rpms. Where are you located? I have a buddy who ports heads very well and has a great reputation that does them for $400.
....Not sure what your saying , the 91 302 should be roller ready , the spider should just bolt right in , the spider and dog bones are to keep the lifters from turning in the bore ...
 
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Old Nov 18, 2011 | 08:11 PM
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Alright, motor is in, heads are kinda ported, and headers are on. Now im running inot a no start issue. The first time i cranked it over it fired up right away, but over the course of 30 seconds, slowed from 900rpm to a stall. this is leading me to think its a fueling issue. what is the fuel pressure supposed to be? also, with key on (engine off obviously) i only get a short spurt of fuel when i depress the valve on my fuel rail. shouldn't i get a constant flow? when i turn the key on, i can hear the pump running for 5 seconds or so. i need a little direction here, im lost lol
 
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Old Nov 18, 2011 | 08:39 PM
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I know at least on the 351w that you should have 39 lbs of pressure at the rail.

You can usually rent a fuel rail pressure gauge at a parts store. Do not try and use a tire gauge....
 
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