Pre-1997 Models

Got the H.O. Motor. Now what?

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Old 01-30-2003, 09:59 PM
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Got the H.O. Motor. Now what?

Well, I finally finished replacing my 372,000 mile 5 liter in my '92 f-150 with a new (to me) 5,000 mile H.O engine. My truck is now quite stringer than before, but........ it isn't as ballsy as I had hoped. So what do you guys recomend to give me some more punch? Cash is an issue, so try to keep 'em in the realm of reality. Here's what I have to work with:

1992 F-150 XLT
2WD regular cab
Bone stock fuel injection on a stock '92 302 H.O.
Shorty Headers
True dual exhaust, no cats, and flowmasters

Thanks guys
 
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Old 01-30-2003, 10:27 PM
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one word, best bang for the buck...



Camshaft


Now go look at the hundreds of cams for 5.0L HO. How wild do you want to go?
 
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Old 01-30-2003, 10:34 PM
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OH NO!!! I'm not cracking open that beast AGAIN. Read around and you'll see some of my posts while doing this swap. If I had known that I wouldn't have had the kind of punch I expected, I would have bought a cam while I had the engine on the stand. As of now, I'm looking for mostly bolt on mods. Thanks though!
 
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Old 01-30-2003, 10:41 PM
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um, One word


Gears


hows that for a comeback!?
 
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Old 01-30-2003, 10:50 PM
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Okay, I'll bite. What do you recomend? I'm not real sure what I have in it now. I'm running BF Long Trail 10.5 x 31's. Before the swap, the engine used wind up fairly tight before shifting, and now it seems to shift a little short. I understand that the cam specs are different than the truck, and I've been blaming the short shifting on that, so maybe a gear swap is in order. Do you know of a site that I can check my VIN with and find out what my gearing is?
 
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Old 01-30-2003, 11:24 PM
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Can't do it on one word. 1.7:1 Roller Rockers They'll give you more lift, less valve train friction, about 10 HP increase with no change in the RPM for peak HP or Torque
 
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Old 01-30-2003, 11:29 PM
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Two questions: How much for the rockers? And, will they fit under stock Aluminum HO valve covers?
 

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Old 01-31-2003, 07:53 PM
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Rockers is a good idea. The ring and pinion gear will depend on what you do with your truck. Your normal everyday activities. I drive 60+ miles a day so I'm keeping mine at a stock 3.55. Summit or Jeggs is a good place to shop for gears or rockers.

There is a code on your drivers door or door jam that represents your final drive gearing. Post the codes here and maybe we can decifer them.
 
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Old 01-31-2003, 08:32 PM
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You can find 1.7 roller rockers on any Mustang web site (ie corral.net, stangnet, etc) for about 100 bones. They were my second mod after my exhaust and made a significant difference. Yes they will fit under your stcok valve cover with no problems
 
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Old 01-31-2003, 08:41 PM
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I want to know more about these 1.7:1 rockers. How would they work in my basically stock 5.0 with speed density? my only other mods are exhaust and a K&N panel.
 
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Old 01-31-2003, 09:47 PM
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More lift = more HP & TQ. Take your currnt cam lift divide it by 1.6 and then multiply that amount by 1.7 and that is what cam lift will be with the 1.7 rockers.
 
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Old 01-31-2003, 10:51 PM
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got any specs for an 89 5.0 cam?
 
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Old 01-31-2003, 11:45 PM
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On a 96 it's .2637" I /.2801" E at the cam or .4219" I /.4482 E at the valve.
The 1.7s change those numbers to .4483" I /.4762" E for a gain of .0264" I / .0280" E.

Your cam is probably different but the gains should be similar.
 
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Old 01-31-2003, 11:58 PM
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Hey since you seem to have numbers for camshafts how about some for the 1995 5.0 cam
Thanks
Joe
 
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Old 02-01-2003, 02:26 AM
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it does sound like a pretty good idea, and this will work fine with the speed density right? anybody got a good source for them? It looks like the FRPP ones are a good deal. I think the next things on my list are some 1.7 roller rockers and underdrive pulleys! and I just remembered something, my motor isnt an 89, its a 92, the short block was replaced under warranty.

I just found a place in town that has a chassis dyno, im gonna stop in and see how much a couple of runs will cost me. I would have liked to do it before i did any mods to the truck to get a baseline.
 


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