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Old 01-19-2016, 07:32 AM   #1
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Paxton boosted 5.7 vid

https://www.youtube.com/watch?featur...&v=wqeNdBop5QI

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Old 01-19-2016, 08:57 AM   #2
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You know I like that! I have the heads, cam and the stock bottom (lol). I'm using half the boost and a bigger cooler and very soon W/M injection. Should be fun.
OBTW, the spokesmen in the video is the guy who challenged the A$$ Monkey's with a drag challenge.
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Old 01-19-2016, 10:21 AM   #3
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Thought you'd like that Greg. Figured you get a "charge" out it lol. Using w/m will loose you a few ponies, but you can creep up on the timing to get it back. Me? I'd rather loose a few ponies incase I have a failure with my w/m system. I use w/m not only for cooling, but for the increase in octane. Been seriously thinking of of just h2o injection and switching over to race fuel on track days.
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Old 01-19-2016, 10:32 AM   #4
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Talking with folks and from personal experience I have found that the hemi doesn't like a lot timing. I run mine max at 20 degree's and try to hold 10-12 degree's at idle. I also found that the hemi really picks up running a little leaner than what we generally are use to, being 12.6- 12.8. With the w/m I'm hoping to run leaner than what's thought of as safe. Keith running the 1500 should get some very serious numbers. Looking forward to getting everything together and some track time.
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Old 01-19-2016, 11:00 AM   #5
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NA, most Hemi's like anywhere's between 19*-22* at full tilt. You have to pull timing when you run boost. My best times have been with 11*-12* under full boost and 10.8 a/f. With any less timing it runs like poo. I've seen some run as high as 16* at the same boost levels as me, but I'm not comfortable with that.
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Old 01-19-2016, 11:12 AM   #6
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What boost did you run at? Seems i need pull timing back some and fatten it up....
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Old 01-19-2016, 11:56 AM   #7
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Rule of thumb is 1* per lb of boost, but that don't work with these Hemi's unlike the old school ones that liked 34*-36*cause our combustion chambers are so efficient and the reason we can get by with so little timing. I run 17-18 lbs of boost + w/m + a small dab of n2o. Build your fuel tables first with least amount of timing, then slowly work up the timing tables till you find the sweet spot.

Is the bottom end of your motor totally stock?
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Old 01-19-2016, 12:00 PM   #8
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And Greg, also my heads are totally different. I have a 1 off set of 5.7 heads that nobody else has. I welded up the quench pads giving me a closed chamber design.
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Old 01-19-2016, 12:18 PM   #9
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And Greg, also my heads are totally different. I have a 1 off set of 5.7 heads that nobody else has. I welded up the quench pads giving me a closed chamber design.
Yes, totally stock. My heads are 05 cnc ported by Arrington with bv, milled .020 with springs.
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Old 01-19-2016, 05:14 PM   #10
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My truck runs full timing around 17-20timing until 4 psi but it's only there for a blink. My timing is around 14 degrees at 190kpa (13psi) I use meth set around 60% on time at 6psi and ramp to 100% by 12 psi.

Gregg your trucks sets conservative right now but we need to see about fueling when winter goes away. Not sure it's rich enough yet
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