MMR Posted September 6, 2012 Report Share Posted September 6, 2012 Sorry for making two threads, but it is two different questions.Anyway, my question is; how much does an aftermarket camshaft change the emissions of the car? I am no threehugger (actually I couldn't care less about emissions), but it has to do with passsing the inspection. There are all kinds of gay laws about this stuff over here. Link to comment Share on other sites More sharing options...
revhead347 Posted September 6, 2012 Report Share Posted September 6, 2012 It varies from car to car. My car aced emissions with a Trick Flow 3 cam, and does even better with the custom cam (slightly smaller than the Trick Flow). Both cams are pretty large, and I only go through emissions with 2 cats and no other emission's device. I just did another car, I believe it had the Trick Flow package with the 170cc heads and the #1 cam, and it aced emissions. I put the same cats on my friend's bone stock Cobra with longtubes and it barely passes with the spout pulled. Unless it's like an alphabet cam or something like that, I don't think it makes much difference.Kurt Link to comment Share on other sites More sharing options...
ttocs Posted September 6, 2012 Report Share Posted September 6, 2012 I run the 170s and a stage one by trick flow and passed in az. Link to comment Share on other sites More sharing options...
LilRoush Posted September 7, 2012 Report Share Posted September 7, 2012 I would say see what the level is you have to meet to pass, then look where you currently are with the stock cam and go from there. It will add some carbon out the back... but it might be enough to allow you to pass your check over there with a mild cam. Link to comment Share on other sites More sharing options...
Number Tew Posted September 7, 2012 Report Share Posted September 7, 2012 As far as I know, the biggest off the shelf cams we can get is the comp 218/226 .500 lift cams, which aren't exactly huge. Just noting Link to comment Share on other sites More sharing options...
OnyxCobra Posted September 8, 2012 Report Share Posted September 8, 2012 there are cams with Carb EO numbers if that is what you guys use over there, i have no idea though. Link to comment Share on other sites More sharing options...
revhead347 Posted September 8, 2012 Report Share Posted September 8, 2012 This is from my Mustang. This is with ported Canfield 192cc heads and a Trick Flow 3 cam (.574/.595 w/ 236/248 @.050" w/ 110 lobe sep) on a 347cid Ford. Fairly decent size cam. I had 2 forward catalytic converters (the small ones) off of a 93' Mustang ethnicity rigged prior to the mufflers. I had no EGR, and no smog pump, and the engine had about 85,000 miles on it. I have since installed a smaller cam and built a better H-pipe with big Magnaflow converters, and it does even better now. I don't have the emissions sheet here at work with me though. This is why I say it's all about the tune.Kurt Link to comment Share on other sites More sharing options...
MMR Posted September 9, 2012 Author Report Share Posted September 9, 2012 I don't know how to intrepid that emissions sheet, sorry I am stupid!What figures are you looking at and what does the different stuff mean? Link to comment Share on other sites More sharing options...
