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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

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Old May 30, 2015 | 09:12 PM
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Maybe a map...with pictures

I've heard mention of the "6 liter tune up" But I haven't been able to find it as a sticky anywhere. Could someone point me in the right direction? My wife is taking the kids to CA for a month and a half this summer so I'll have some free time...
 
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Old May 30, 2015 | 09:18 PM
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ignition upgrade and timing bump (no 56K) - FSB Forums

This is the best one I have seen so far.
 
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Old May 30, 2015 | 09:23 PM
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Sixlitre was the guy that brought it to this site.
 
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Old May 30, 2015 | 09:26 PM
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To sum it up: copper Motorcraft plugs gapped between .050 and .055; better plug wires, like 9mm Ford Racing wires or whatever you prefer; new coil, but there was a lot of debate whether or not you need a hotter one. I used an MSD unit that has a really high output and there's not drawback to using a hotter one besides price probably; new cap and rotor, again I used MSD parts there with good results but there are other options; bump the base timing up to ~12* BTDC, or until just before you get spark knock.

It's a very basic tune up that often yields better throttle response, and a little more power since these parts are 20 years old or better.
 
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Old May 30, 2015 | 10:01 PM
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Cool! I already did everything but the timing about 6mo after I bought the truck. 2 more weeks and it will be time to work on my old rumble truck.
 
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Old May 31, 2015 | 01:00 PM
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One more question. Will I need to adjust the idle speed after advancing the timing? I had to do so on on old beater years ago but it had no computer control.
 
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Old May 31, 2015 | 01:03 PM
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No adjustment necessary. If the idle goes crazy, that means there are problems elsewhere.
 
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Old May 31, 2015 | 09:16 PM
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Originally Posted by eakermeld
ignition upgrade and timing bump (no 56K) - FSB Forums

This is the best one I have seen so far.
Would this adjustment work for the 4.9L I6 also?
 
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Old May 31, 2015 | 09:22 PM
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Originally Posted by jedijeb
Would this adjustment work for the 4.9L I6 also?
Yes it will, but there are a couple of really minor differences IIRC. Search the net on the sixlitre tune up for a 4.9 or a 300 and see what turns up. I could be mistaken.
 
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