f150cam

thats all iv done on both my trucks lol. go on Google and type in "sixlitre tuneup" and you will find a bunch of write ups.

also sounds like you know what to use then, i used MSD cap coil and rotor on both trucks, normal 9mm wires and autolight plugs gaped at 55

SuperGreen

I haven't found any 9mm wires.

But people have been using 8mm Taylor wires.
Might go with 8.2 Taylor's. But it just needs to be bigger wires

TheCollector

I have acccel 9mm race wires on my V8 chevy they sell make your own wires at most part stores. i think the stock ones are 9mm actually

I think i will be going to the parts store tomorrow and getting my sixlitre tune up kit! and a cheep timing light

SuperGreen

Okay so I guess it has to be small wires or the bigger the better?

Let me know how that goes. You got a 302 or 351?

TheCollector

300 SIX 4.9l straight six inline six!

the smaller the number the less resistance there is. lest resistance = more spark

sylver91

Don't know what gap you other 4.9'rs run, but I pushed it as far as 0.048" with 14 deg BTDC timing. I put those plugs in maybe 10 000 miles or so ago and I check them maybe 500 miles ago at work just to see how they held up. So far it does not seem they are burning up prematurely nor do I have any misfiring or lack of power since the ignition now has to pump more juice to jump that gap for the larger spark, but over time they do open up anyways.

I have been meaning to upgrade coils soon to compensate for that but its really just been a self test to see how it performs. Can't argue with my economy and throttle response.

rikard

On my 4.9 I went with Taylor low resistance spirial core wires, Autolites gapped at .050, and the timing at 12 deg BTDC. I tried 14 deg but it was too much (220k miles) and the rods were knocking. The stock numbers are .044 for the plugs and 10 deg BTDC for the timing. I felt a definate increase in power especially through the gears, accelerating when passing, and holding hills when towing. No real gain in MPG but no worse.
Cap and rotor were Napa with brass contacts and I kept the stock coil. Many of the after market coils have quality problems and suffer a high failure rate. If I was to go after market it would be Accel. Running a higher gap does mean pulling the plugs more often but on a 4.9 thats only thirty minutes.
YMMV
Happy New Year To All.
rikard

SuperGreen

Oh okay I guess I'll run the Taylor 8mm wires. Just to have the red accessories
But a lot of people have been saying accel wires are the best for low resistance according to other forums

SuperGreen

Which of these two coils will be the best for this?

http://m.summitracing.com/search/eng...ignition-coils

TheCollector

well I have an entire accel ignition system on my 400hp street legal race car for a reason i even managed to raid my uncles stock pile of there old yellow jacket header plugs they don't make them anymore but damn there the best spark plug i have ever used in my car.