09-11-2023, 08:08 AM | #15 |
Snackbar Tuning
Drives: 2023 SGM ZL1 Join Date: Oct 2016
Location: Florida
Posts: 1,288
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On an NA Engine, you typically want longer intake durations and then exhaust durations that are not too much longer than the intake duration. This is because not being forced induction, you need more time for the air to ingest air while the intake valves are open.
In a supercharged engine, you don't need as long as an intake duration since the air is being forced in, but you want a longer exhaust duration to allow extra time for the additional exhaust gasses to escape. This is why you typically see cams geared for boost have a larger difference in intake vs exhaust duration and why you see NA cams typically have less of a difference in intake vs exhaust duration. I suspect adding an LT5 cam to an LT1 would maybe shift power around a little but ultimately not be optimal and provide very little gain. The shorter intake duration will hurt power and the longer exhaust duration, in this case, wont help power. |
09-11-2023, 08:43 AM | #16 | ||
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,953
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Moral of the story when cam shopping for a daily is that you want to keep overlap around 0 or slightly negative... it should drive 95% like stock with proper tuning and work great with stock converters. Positive overlap trades bottom end for more peak power. You start to lose low end and have to compensate in other areas...gears, larger stall, more compression etc.
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2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
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09-11-2023, 01:23 PM | #17 | |
Drives: 18 1SS Join Date: Jul 2023
Location: Oman
Posts: 17
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09-11-2023, 03:03 PM | #18 |
BLUPRINT_1LE
Drives: 2022 Rapid Blue SS 1LE Join Date: May 2017
Location: Motor City -> AZ
Posts: 748
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I agree with others BTR or Katech cam for your setup. I have the Katech Torquer version in mines and daily drive it with out any issues.
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2022 Camaro SS 1LE | PDR | Rapid Blue | Manual | Katech Built SS 1LE | Katech Build Sheet
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09-11-2023, 03:26 PM | #19 | |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,953
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2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
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09-12-2023, 02:34 AM | #20 | |
Drives: 18 1SS Join Date: Jul 2023
Location: Oman
Posts: 17
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> Gaterman Lifters > BTR 0.660 Springs > BTR 7.85 Pushrods Will these parts work perfectly fine with the cam you shared earlier from BTR stock profile (LT1/L86 DOD Delete cam)? https://briantooleyracing.com/btr-ca...240006175.html |
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09-12-2023, 07:47 AM | #21 | |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,953
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__________________
2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
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09-12-2023, 08:22 AM | #22 |
Drives: 6th gen Join Date: Aug 2013
Location: US
Posts: 3,710
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Why are so many people still using dual springs instead of the conical for the 220 or smaller?
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‘22 2SS 1LE M6 Summit White - RF, Flexfuel, LT2 intake, 95mm tb, ATI udp, VT ramair, full 28” dragpack - 11.68@122
‘16 1SS M6 LT2 intake + boltons on DR 11.0@126+ (Sold) |
09-12-2023, 08:39 AM | #23 | |
Drives: 18 1SS Join Date: Jul 2023
Location: Oman
Posts: 17
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Thanks for the help tho much appreciated Last edited by Zuberman717; 09-12-2023 at 09:07 AM. |
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02-23-2024, 12:46 AM | #24 | |
Drives: 17 2SS, 8L90, Cam, Heads, E85 Join Date: Dec 2016
Location: US
Posts: 1,213
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Or are we talking about more of a random misfire and shaky feeling from the cam? My cam motion cam with 4 degrees of overlap will have normal combustion, meaning smooth engine operation about 900-950 rpms, once you go below that you start getting inconsistent combustion. I think these cars have major calibration/drivability issues from the factory. A lot of people claim to fix it mechanically with throttle body modifications. Or with HP Tuners but I don't think they are getting anywhere that would solve my concerns. I see someone made a new tool I want to try out that attempts to calculate out a linear driver demand torque table for HP Tuners. If you air model is not correct in your calibration/tune from your tuner you are always going to have drivability issues with a cam. I think a lot of people have a lot of different opinions on what drivability actually could me to each person. |
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