Will a cam add/decrease rasp?
05-21-2005, 08:24 PM
#1
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Will a cam add/decrease rasp? Exhaust Mods: Pacesetter LT's, TSP ORY, Magnaflow Catback
I have a HORRIBLE rasp between 2k and 3k rpm. Only at partial throttle, so normal driving around its always there. Sounds alot like a trumpet or horn. Other than that I love this set up.
My question is I'm about to install a cam along the lines of 224/224 .581 .581 112lsa. Will the rasp still be same? Will it be moved in the rpm? Will it go away?
I dont want to go cutting up the I pipe if i dont have to.
I have a HORRIBLE rasp between 2k and 3k rpm. Only at partial throttle, so normal driving around its always there. Sounds alot like a trumpet or horn. Other than that I love this set up.
My question is I'm about to install a cam along the lines of 224/224 .581 .581 112lsa. Will the rasp still be same? Will it be moved in the rpm? Will it go away?
I dont want to go cutting up the I pipe if i dont have to.
05-21-2005, 08:29 PM
#2
[QUOTE=SY KB 4.7L]Exhaust Mods: Pacesetter LT's, TSP ORY, Magnaflow Catback
I have the same setup as you except Pace y instead of TSP and I don't notice any rasp like you describe. The cam will make it sound badass though I can tell you that much. I remember it was a bit quieter and not near as deep before I put the cam in.
I have the same setup as you except Pace y instead of TSP and I don't notice any rasp like you describe. The cam will make it sound badass though I can tell you that much. I remember it was a bit quieter and not near as deep before I put the cam in.
05-21-2005, 08:44 PM
#4
i get the same thing but only at half throttle. and im never half throttle im either 1/4 or wot 
sounds like a helichopper taking off. If i keep my car im gonna have a side exit true dual fabbed up at mufflex maybe.
sounds like a helichopper taking off. If i keep my car im gonna have a side exit true dual fabbed up at mufflex maybe.
05-21-2005, 10:43 PM
#6
Rasp will be worse with the cam because of increased overlap and increase cylinder filling. Sorry if that bursts your bubble. 
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.