newb question: Can tuning change torque curve?
08-17-2009, 04:03 PM
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newb question: Can tuning change torque curve? I checked the stickies with no luck so this is probably a dumb question.
Can the torque curve be adjusted with tuning or is that only possible with a cam? More specifically I'm wondering if the motor could be tuned to give up some high end horsepower and gain some low end torque.
I just bought the truck and the previous owner built the motor. Here are the current specs:
2004 6.0L block
-LS6 ported balanced oil pump
-LS2 timing chain
-Ported and polished 6.0l aluminum heads milled 12 thou for 9.8:1 compression
-3 angle valve grind on stock size valves
-Comp cam 918 bee-hive valve springs with titanium retainers
-Thunder Racing TR220 camshaft, 220 intake 220 exhaust duration, .568 lift with 112LSA
-Thunder Racing chro-moly 7.400" pushrods
-LS1 lifters and rockers
-Ported and polished TB
-Bosch 30lb/hr fuel injectors
Can the torque curve be adjusted with tuning or is that only possible with a cam? More specifically I'm wondering if the motor could be tuned to give up some high end horsepower and gain some low end torque.
I just bought the truck and the previous owner built the motor. Here are the current specs:
2004 6.0L block
-LS6 ported balanced oil pump
-LS2 timing chain
-Ported and polished 6.0l aluminum heads milled 12 thou for 9.8:1 compression
-3 angle valve grind on stock size valves
-Comp cam 918 bee-hive valve springs with titanium retainers
-Thunder Racing TR220 camshaft, 220 intake 220 exhaust duration, .568 lift with 112LSA
-Thunder Racing chro-moly 7.400" pushrods
-LS1 lifters and rockers
-Ported and polished TB
-Bosch 30lb/hr fuel injectors
08-18-2009, 05:03 AM
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Well you can always adjust your fueling and spark curve to maximize torque to some degree. Of course you need a dyno and a good tuner.
In reality a cam and/or heads that changes the engines Volumetric Efficiency (VE) is far more influential in dictating your HP/TQ curve. But, you can always bump some spark advance in down low, and enable additional fueling (PE) at a lower rpm and throttle opening.
May not be as dramatic as you want, but you can give it a try.
Good luck.
..WeathermanShawn..
In reality a cam and/or heads that changes the engines Volumetric Efficiency (VE) is far more influential in dictating your HP/TQ curve. But, you can always bump some spark advance in down low, and enable additional fueling (PE) at a lower rpm and throttle opening.
May not be as dramatic as you want, but you can give it a try.
Good luck.
..WeathermanShawn..
08-18-2009, 08:50 AM
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You can certainly "give up" any amount of horsepower
you like, but you can only "add torque" as far as the
airflow (cylinder air mass per stroke) will support. A
bit of spark, a bit leaner, OK - but after you get to
ideal-for-the-mechanicals, the only thing left is the
mechanicals.
you like, but you can only "add torque" as far as the
airflow (cylinder air mass per stroke) will support. A
bit of spark, a bit leaner, OK - but after you get to
ideal-for-the-mechanicals, the only thing left is the
mechanicals.
08-18-2009, 09:47 AM
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Thanks for the help. I'm getting more used to the power delivery now but it sounds like if I want a change I'm going to have to go to the old man cam and a new tune. I wonder if I would need a new torque converter if I went to that smaller cam.
