Need some advice from the Cam experts?
04-15-2007, 08:14 PM
#1
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Need some advice from the Cam experts? Right now I have a TR 224/224 114 in there now. I want to go a bit bigger; I need a daily driver friendly cam that will also pass CA smog. In the near future, I am planning on Patriot Stage II 5.3 Liter heads and 3.90 gears. Every cam I research is too big for CA to pass smog.
Anyone have some good suggestions? Or is this cam the limit?
Thanks,
Jason
Anyone have some good suggestions? Or is this cam the limit?
Thanks,
Jason
04-15-2007, 08:25 PM
#2
Even the cam you have is normally too big to pass California smog testing. If you've gotten it to pass, consider yourself lucky. About the only thing you can do is run a cam with similar overlap, but with more lift and a later intake valve closing point (to peak at a higher rpm). This won't do much for you now, but it will work well with higher compression and ported heads.
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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.
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.
04-15-2007, 08:26 PM
#3
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Im not a cam expert, but ill tell ya what i think. Your cam you have is probably the limit for CA smog IMO. Anything larger will create too much overlap to pass a sniffer. That cam has -4 degrees overlap @ .050 which is on the edge of sniffer passing if I remember right.
BTW, how are you passing inspection right now with longtubes?
BTW, how are you passing inspection right now with longtubes?
04-15-2007, 08:37 PM
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Originally Posted by Patrick G
Even the cam you have is normally too big to pass California smog testing. If you've gotten it to pass, consider yourself lucky. About the only thing you can do is run a cam with similar overlap, but with more lift and a later intake valve closing point (to peak at a higher rpm). This won't do much for you now, but it will work well with higher compression and ported heads.
When I smoged it, I passed with flying colors. I was not even close to the limits. I was pretty shocked. It sounds like the cam I have is the best one for CA...not worth the work for 5 or 10 hp.