g5x2 and streetability
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Teching In
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g5x2 and streetability Would I be able to run this cam with some stage 2 ported 5.3l heads and not have to worry about piston to valve clearance? Also I've read about people doing emissions tunes. Would I be able to do one of these and pass smog? I want the power of this cam, but have to keep the car streetable, just enough to get to school and work and to mess around with the local import scene on the weekends.
Re: g5x2 and streetability
Also I've read about people doing emissions tunes. Would I be able to do one of these and pass smog? I want the power of this cam, but have to keep the car streetable, just enough to get to school and work and to mess around with the local import scene on the weekends.
I've heard of 224/224 passing and some 230's.
Launching!
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From: St. Louis, MO
Re: g5x2 and streetability If you "do not" want to cut your pistons, "do not" get your heads milled at all. A (.0010")(one thousandths) cleanup pass will be fine, but if you go .020" (twenty thousandths) or .030" (thirty thousandths) you will have PTV problems and definitely have to cut the pistons.
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Teching In
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Re: g5x2 and streetability Dont the 5.3l heads not need to be milled to get 11:1 compression? And didnt chris ARE 360 pass smog with a cam bigger than the g5x2? With non milled heads and non cut pistons, Would the g5x2 work with the 5.3 heads on an otherwise stock motor?
Launching!
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From: St. Louis, MO
Re: g5x2 and streetability Yes, they will work fine. If they are not milled you will be pretty close to 11:1, probably around 10.8 or so. Its always a good idea to check the PTV clearance just for the piece of mind though.
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Teching In
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Re: g5x2 and streetability So the g5x2 is streetable? Who was the person that passed smog with a giant cam but used a ls1edit tune to do so? What about the X1 cam, will that have any chance of passing and make good power with the 5.3l heads?
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From: Bring it........ b*tch
Re: g5x2 and streetability
Dont the 5.3l heads not need to be milled to get 11:1 compression? And didnt chris ARE 360 pass smog with a cam bigger than the g5x2? With non milled heads and non cut pistons, Would the g5x2 work with the 5.3 heads on an otherwise stock motor?
If you are mostly concerned with emissions, the G5X-2 is NOT the cam for you, it's one of the biggest out there right now. Get a 224-228 cam or so. More duration = more valve overlap at idle which = more unburnt fuel flowing out of the engine through the exhaust which = failed emissions if you have to do a sniffer test. Any duration in the cam you add past 224 is just going to take you more and more near to failing the sniffer test.
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Verdad Gallardo Thread Starter
Teching In
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Re: g5x2 and streetability What about the x1 cam. It seems like a good reverse split. If not i was thinking about getting a comp cam custom reverse split grind. I dont care about lope so a 112 lsa is find. What is the biggest possible reverse split i can run and still pass. I wanna have about 430 with long tubes, true duals, all the bolt ons, and some ported 5.3l heads in an m6. Another thing are the 5.3l heads a good deal for the money and will they work well with a large reverse split.
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From: NorCal
Re: g5x2 and streetability I know someone will ignore all visual for me to pass smog, but it has to pass the sniffer but he could care less on how I do it. So what im wondering is, do you think there would be a chance of passing if I had a custom H-pipe made with 3 cats per side? For use only when emissions time comes around of course. 
I have a buddy who owns a muffler shop so that isnt a problem either. 
BTW, All this with the G5X-2 cam and cali emissions.
I have a buddy who owns a muffler shop so that isnt a problem either. BTW, All this with the G5X-2 cam and cali emissions.
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From: PURDUE
Re: g5x2 and streetability I have the G5X2, drive it pretty much everyday, and its fine. I don't know how you define "streetable" ... but with the G5X2 my car doesn't die or hunt for an idle (when warmed up), so that means its streetable to me. 
Re: g5x2 and streetability Let's make a list of what passes for sure.
This is assuming you have cats on the car...
224//114
222/224//113 my old cam passed in WI
220/114
Has anyone passed with a 228/228/114?
This is assuming you have cats on the car...
224//114
222/224//113 my old cam passed in WI
220/114
Has anyone passed with a 228/228/114?
But then again I was exempt for driving less than 5000 miles a year... 
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Re: g5x2 and streetability I'm not worried about what LSA, so a 112 would work. I want to find a cam that could get me around 430 with absolute speed stage 2 ported 5.3l's, long tubes, dr gas 3 inch x pipe, all the bolt ons, ls6 intake, etc. I'd rather do an emission tunes and have to work to pass smog than get a smaller cam that doesnt produce the same numbers. I dont think anyones responded about the x1 cam. I would think thered be a way to run a small gap in duration so that theres enough overlap that i can somehow cover it up. This is a street car, but i want to take it to the track weekly, so manners arent that big of a deal.
Re: g5x2 and streetability Streetability is not the same as street legality...
Anyhow, you will have trouble passing a sniffer with any cam over 220 @ .050 on a 112, IMO... the overlap means that idle vacuum will be (relatively) low, which in turn means that (compared to a cam with a wider lobe sep) you car will spew all manners of nastiness at idle, according to the sniffer.
As for emissions tunes, I'm not really sure what that means... when the vehicle is warmed up (in closed loop), the computer is attempting to achieve stoich anyhow, regardless of the WOT tune. Most PCM tunes actually lean out the mixture at high throttle anyhow (factory WOT A/F is @ 12:1, tuners usually shoot for @ 13:1). Pulling timing would hurt emissions as well...
Anyhow, you will have trouble passing a sniffer with any cam over 220 @ .050 on a 112, IMO... the overlap means that idle vacuum will be (relatively) low, which in turn means that (compared to a cam with a wider lobe sep) you car will spew all manners of nastiness at idle, according to the sniffer.
As for emissions tunes, I'm not really sure what that means... when the vehicle is warmed up (in closed loop), the computer is attempting to achieve stoich anyhow, regardless of the WOT tune. Most PCM tunes actually lean out the mixture at high throttle anyhow (factory WOT A/F is @ 12:1, tuners usually shoot for @ 13:1). Pulling timing would hurt emissions as well...
TECH Resident
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From: Los Angeles, CA
Re: g5x2 and streetability
I know someone will ignore all visual for me to pass smog, but it has to pass the sniffer but he could care less on how I do it. So what im wondering is, do you think there would be a chance of passing if I had a custom H-pipe made with 3 cats per side? For use only when emissions time comes around of course. I have a buddy who owns a muffler shop so that isnt a problem either.
BTW, All this with the G5X-2 cam and cali emissions.
I have a buddy who owns a muffler shop so that isnt a problem either. BTW, All this with the G5X-2 cam and cali emissions.
have him run a civic,
and just enter your info
BAM! with flying colors!
TECH Apprentice
Joined: May 2002
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From: Phoenix, AZ
Re: g5x2 and streetability
I know someone will ignore all visual for me to pass smog, but it has to pass the sniffer but he could care less on how I do it. So what im wondering is, do you think there would be a chance of passing if I had a custom H-pipe made with 3 cats per side? For use only when emissions time comes around of course. I have a buddy who owns a muffler shop so that isnt a problem either.
BTW, All this with the G5X-2 cam and cali emissions.
I have a buddy who owns a muffler shop so that isnt a problem either. BTW, All this with the G5X-2 cam and cali emissions.
have him run a civic,
and just enter your info
BAM! with flying colors!