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Heads questions/mill job/etc

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Old Nov 14, 2006 | 08:21 PM
  #11  
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There are a variety of top end mods that can help a LQ4. Have you got a budget in mind?

Richard
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Old Nov 14, 2006 | 08:45 PM
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Not really.Just looking for ideas other than a mill job to get me at 10.0 CR.
Not a small fortune but i'd say somewhere around 800 or so.
What ya think?
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Old Nov 14, 2006 | 09:00 PM
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Originally Posted by TouchOfEvil04
You didn't have to change your sig bro.I honestly don't care.My post is just to play around.

I could not remember where I saw that until I saw your post this afternoon, it needed updating a little anyways, I need to find someone to make me a sig pic!!!
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Old Nov 14, 2006 | 09:15 PM
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Id just get a set of 243 castings with a valvejob and be done with it. That should put you around the desired compression if not a bit higher.... and they flow badass. That was an idea I had for a while.
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Old Nov 14, 2006 | 09:47 PM
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Arn't the 317's on par with the 243's on flow rates?
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Old Nov 14, 2006 | 10:15 PM
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Originally Posted by TouchOfEvil04
Arn't the 317's on par with the 243's on flow rates?
Yes they are. I ran a search and got this https://www.performancetrucks.net/fo...ghlight=317+cc. I couldnt find any flow numbers to compare. Here is the 317 castings info

Stock 6.0L Heads 79.4% 83.80%
Lift 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 0.55 575 0.6
Intake 65.9 103.9 141.8 177.1 203.4 224.9 242.9 252.5 247 250.9 251.1 251.9
Exhaust 57.1 92.10 116.1 139.4 157.8 165.80 175.8 184.80 200.4 200.1 202.1 203
Ratio 86.6 88.6 81.87 78.7 77.60 73.7 72.40 73.2 81.10 79.7 80.5 80.6
Ratio w/ Intake 87.3 89.1 83.6 81.9 81.6 78.90 78.1 79.50 88.3 86.6 87.4 87.5
The 243 castings have lightweight sodium filled valves but i really dont know exactly how much gain you will see with those light weight valves. You will see higher compression with a ~62 cc chamber though.
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Old Nov 14, 2006 | 10:18 PM
  #17  
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im interested in what richard thinks on top end of a lq4
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Old Nov 14, 2006 | 10:29 PM
  #18  
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Gottcha,i think for money sake i'm better off doin some work to the ones i have and get them milled.
I already have 918's and titanium retainers in these.......
I'll see what Richard has to say for mill job and so on.Just trying to see what i can do and what it's gonna cost me.
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Old Nov 14, 2006 | 10:41 PM
  #19  
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I think you can get a set milled for under 100 bucks.
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Old Nov 14, 2006 | 10:44 PM
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Damn dude.What gears are you running to pull 103 mph at a 13.7?
Even if the mill job is only 100bucks i wanna see what else i can have done without breaking the bank ya know.
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