Cam gurus come inside..
02-19-2009 | 01:50 PM
#21
Deff not stepping on any toes that I see. That is the perfect answer. That's the words I was looking for...valve events...
So when you have advance in the came that has nothing to do with the advance on ignition when tuning? So what does that -5* do for the nitrous by sending less spark? more matter in the combustion chamber = higher compression = less spark needed or something? I'm gonna go read some more...try to better understand.
So when you have advance in the came that has nothing to do with the advance on ignition when tuning? So what does that -5* do for the nitrous by sending less spark? more matter in the combustion chamber = higher compression = less spark needed or something? I'm gonna go read some more...try to better understand.
Altering cam timing for nitrous is a whole 'nother topic.
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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
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
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
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
02-19-2009 | 05:47 PM
#22
Because nitrous speeds combustion, you have to retard the ignition timing to make sure that peak cylinder pressure still occurs between 13-15 degrees ATDC. Said another way, if you get max power NA with 28 degrees of timing, then you run a 150 shot, using 2 degrees of ignition retard for every 50 shot, your ideal timing on nitrous would need to be 22 degrees.
Altering cam timing for nitrous is a whole 'nother topic.
Altering cam timing for nitrous is a whole 'nother topic.