243 vs 241 heads, does it make a difference with a MP112?
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243 vs 241 heads, does it make a difference with a MP112? I have a stock ls1 with headers with a magnacharger MP112, will changing to a set of 243 heads add any power? I know it will probably lower the boost but will it actually add any horsepower & torque?
Sure, due to more compression and better flowing runners, but why would you do this? You will probably have to run a larger pulley to make less boost or detonation will occur. I personally would go with 317's to lower the cr then add more boost. You have a roots type charger so low end torque will not be a problem.
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Sure, due to more compression and better flowing runners, but why would you do this? You will probably have to run a larger pulley to make less boost or detonation will occur. I personally would go with 317's to lower the cr then add more boost. You have a roots type charger so low end torque will not be a problem.
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I don't believe you would see any real gain meaning seat of the pants. It's probably measurable on a dyno but not worth your time. If the exhaust flowed enough better on the 243's vs. the 241's I might be inclined to try it but they don't. A ported set of 241's would be perfect. I've made 500 rwhp with them n/a.
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I don't think so, my friend is running his vortech @8lb's with 243's on a stock shortblock, pulled a couple of degrees at peak torque to be safe. There's alot more information out there now about running higher static compression at lower boost levels. Before you would sacrifice out of boost power with lower compression and pulled timing. We are only talking a 500hp set up which is not much more than a high dollar h/c/I combination.
I don't think so, my friend is running his vortech @8lb's with 243's on a stock shortblock, pulled a couple of degrees at peak torque to be safe. There's alot more information out there now about running higher static compression at lower boost levels. Before you would sacrifice out of boost power with lower compression and pulled timing. We are only talking a 500hp set up which is not much more than a high dollar h/c/I combination.
Mike, you know my thoughts on this subject already...
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From: Lake Tapps, WA
Thanks, when it comes to small roots style superchargers it's different. It's like trying to suck as much milkshake as you can thru a straw without hyperventilating.
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Brett Foote Imagine sucking through that straw with a bunch of holes in it above the actual milkshake and those holes end up bleeding off what pressure you have. You begin to struggle harder and harder to pull in the same amount of air mass(in this case milkshake mass lol) and you end up overworking yourself for less gain.
Same principle.
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Gotta learn somehow. I'm glad you asked cause I learned as well. So in the case of a 5.3, going from the 862's to the 241's, would that make sense as the 241's flow considerably better and have bigger intake valves? Granted you lose compression.
The 112's do like higher compression.. You'll continue to make power and torq the higher u go on compression but then u will eventually hit the cfm and thermal wall of the baby blower. Just get ur quench dead nuts to keep detonation at bay.
