LS6 intake manifold - 5 HP and 25 ft/lbs.?
01-05-2006, 02:44 PM
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LS6 intake manifold - 5 HP and 25 ft/lbs.?
I have seen where some have said that an LS6 intake will give you an additional 5 HP based on the fact that 97-00 C5’s made 345 HP and 01-and up C5’s made 350 HP. One thing that is failed to be mentioned is that the torque number went up between those same model years, from 350 ft/lbs. in the 97-00 to 375 ft/lbs. in 01-and-up C5’s. (Automatics only went up to 360 ft/lbs.). My question is this, what is causing the increase in torque? Do you think the LS6 intake manifold could give you an additional 25 ft/lbs. of torque? I know this is kind of a dumb question, just one that had always bothered me. It mainly bothers me because I want to know if there is another modification that I could be doing that will drive up the torque number. Let me know what you think. Thanks!
Josh
Josh
01-05-2006, 02:45 PM
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Originally Posted by Josh98RedC5
Do you think the LS6 intake manifold could give you an additional 25 ft/lbs. of torque?
Mark
01-05-2006, 02:47 PM
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Originally Posted by Josh98RedC5
I have seen where some have said that an LS6 intake will give you an additional 5 HP based on the fact that 97-00 C5’s made 345 HP and 01-and up C5’s made 350 HP. One thing that is failed to be mentioned is that the torque number went up between those same model years, from 350 ft/lbs. in the 97-00 to 375 ft/lbs. in 01-and-up C5’s. (Automatics only went up to 360 ft/lbs.). My question is this, what is causing the increase in torque? Do you think the LS6 intake manifold could give you an additional 25 ft/lbs. of torque? I know this is kind of a dumb question, just one that had always bothered me. It mainly bothers me because I want to know if there is another modification that I could be doing that will drive up the torque number. Let me know what you think. Thanks!
Josh
Josh
Hope this helps!
01-05-2006, 03:19 PM
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The Ls6 intake manifold and the newer cast exhaust manifold[30% more flow]got 5 hp crank, 4 rwhp. the difference in the intake is minimal. The runners are identical in length and diameter, although the LS6 are belled about 1/16 " on entry, and plenum volume is up a bit over 2 cubic inches.Very expensive horsepower!If you pay someone to do it we are talking $200+ per horse...
01-05-2006, 03:27 PM
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Team Owner
Unless you are doing all the HP mods and trying to get every HP out of the setup.. I wouldnt waste the money on an LS6 intake. 
VR
VR
01-05-2006, 05:22 PM
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I added a set of Stainless Works headers and an LS6 manifold and went from 316rwhp tp 347rwhp. I don't think the headers were responsible for all the extra power.
01-05-2006, 05:53 PM
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Two questions, did you pay a tuner to do the install, and did the same tuner dyno the car. A good tune is worth 8-10 hp, headers 17-20, Ls6 intake 4,there is your 31 hp... even dynos done on the same day are subject to many variables.
