Twin turbo exhaust note.
07-17-2018, 11:35 PM
#62
exhaust length plays a huge roll in sound. I dont think LS sounds good period. they need cam and an actual exhaust.
my combo is 6.0L, 228/228, 3" downpipes, 3" X pipe, 3" out the back, no mufflers yet. but still sounds acceptable
https://www.youtube.com/watch?v=MWVFsCB6H2M
https://www.youtube.com/watch?v=ghXBun_Skx8
my combo is 6.0L, 228/228, 3" downpipes, 3" X pipe, 3" out the back, no mufflers yet. but still sounds acceptable
https://www.youtube.com/watch?v=MWVFsCB6H2M
https://www.youtube.com/watch?v=ghXBun_Skx8
07-23-2018, 10:16 PM
#64
Taking a wild guess that's probably the reason. Just seems like truck motors never sound as good as LS1/2/3 etc...All my vehicles have truck motors lol. LS1 swapped my girlfriends Silverado with LS6 heads and a 228r cam on a 110 LSA, long tubes and a 3" Dynomax bullet sounds beautiful!
07-24-2018, 12:22 AM
#65
Taking a wild guess that's probably the reason. Just seems like truck motors never sound as good as LS1/2/3 etc...All my vehicles have truck motors lol. LS1 swapped my girlfriends Silverado with LS6 heads and a 228r cam on a 110 LSA, long tubes and a 3" Dynomax bullet sounds beautiful!
07-24-2018, 11:35 AM
#66
Compression plays a big roll in sound. Also cam timing. Heavily advanced cam will give more of a raspy note. My 212/212 @ 112 cam was installed on a goofy crank. It was like 8* retarded dot to dot. Degreed in the cam to 1* advanced from the card and it was a whole new animal. Went form 160 cranking compression to 200ish. Sound difference was very noticeable. Picked up just under 12mph in the quarter at the same boot level as well.
07-30-2018, 03:25 AM
#67
I'm going with exhaust configuration is the main cause, here's my car, near identical motor/cam, but with a single turbo setup, single 3" downpipe and mid pipe, and sounds like a truck to me
https://www.youtube.com/watch?v=ac1ekRHMFDE
https://www.youtube.com/watch?v=ac1ekRHMFDE
Compression plays a big roll in sound. Also cam timing. Heavily advanced cam will give more of a raspy note. My 212/212 @ 112 cam was installed on a goofy crank. It was like 8* retarded dot to dot. Degreed in the cam to 1* advanced from the card and it was a whole new animal. Went form 160 cranking compression to 200ish. Sound difference was very noticeable. Picked up just under 12mph in the quarter at the same boot level as well.
07-30-2018, 12:04 PM
#68
When you get the degree wheel on the car you can see where the cam falls “dot to dot” on a factory timing set. This should match your cam card. Usually they are fine. I’ve built about 10 of these engines and only seen 1 with the “goofy crank”. To verify, we installed the same cam on another motor with the factory timing set and it was within a degree of the cam card. So defiantly the crank. Few others have had this issue as well, but it isn’t common and may not have anything to do with your issues. All I’m aware of were on GEN4 ALUM 5.3 engines.
07-30-2018, 01:51 PM
#69
Staging Lane
Forcefed, do you recall if it had VVT or not? I have a Gen4 Alum 5.3 and degree'd my BTR Stage2 turbo cam. It was within a degree dot-dot. Mine is an earlier LC9 that had DOD, but no VVT.
07-30-2018, 09:10 PM
#71
When you get the degree wheel on the car you can see where the cam falls “dot to dot” on a factory timing set. This should match your cam card. Usually they are fine. I’ve built about 10 of these engines and only seen 1 with the “goofy crank”. To verify, we installed the same cam on another motor with the factory timing set and it was within a degree of the cam card. So defiantly the crank. Few others have had this issue as well, but it isn’t common and may not have anything to do with your issues. All I’m aware of were on GEN4 ALUM 5.3 engines.
07-31-2018, 08:04 PM
#72
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https://youtube.com/watch?v=7w_lx0W3iyI
Ron_stoppable requested I post a video of how my car sounds. I'm not sure if this will work but here's a walk around of my car at idle after changing from the really obnoxious race bullets to 3 1/2 inch magnaflows. I cant get this link to work any ideas?
Ron_stoppable requested I post a video of how my car sounds. I'm not sure if this will work but here's a walk around of my car at idle after changing from the really obnoxious race bullets to 3 1/2 inch magnaflows. I cant get this link to work any ideas?
Last edited by vinceI; 07-31-2018 at 08:50 PM.
08-01-2018, 11:53 AM
#73
https://youtube.com/watch?v=7w_lx0W3iyI
Ron_stoppable requested I post a video of how my car sounds. I'm not sure if this will work but here's a walk around of my car at idle after changing from the really obnoxious race bullets to 3 1/2 inch magnaflows. I cant get this link to work any ideas?
Ron_stoppable requested I post a video of how my car sounds. I'm not sure if this will work but here's a walk around of my car at idle after changing from the really obnoxious race bullets to 3 1/2 inch magnaflows. I cant get this link to work any ideas?
08-01-2018, 11:42 PM
#75
https://youtube.com/watch?v=7w_lx0W3iyI
Ron_stoppable requested I post a video of how my car sounds. I'm not sure if this will work but here's a walk around of my car at idle after changing from the really obnoxious race bullets to 3 1/2 inch magnaflows. I cant get this link to work any ideas?
Ron_stoppable requested I post a video of how my car sounds. I'm not sure if this will work but here's a walk around of my car at idle after changing from the really obnoxious race bullets to 3 1/2 inch magnaflows. I cant get this link to work any ideas?
08-03-2018, 12:28 PM
#79
cam timing has a HUGE effect on sound.As overlap is the most detrimental. As you Retard/Advance your cam, you're essentially altering your cylinder pressure AKA "Dynamic Compression". Hence, why ForceFed's Crank compression increased by a large margin. Cylinder pressure= Power, So as long as you have the octane to support it. My crank was 10* retarded right out of the factory.
