422s, emissions, and cams
Thread Starter
TECH Fanatic
Joined: Nov 2001
Posts: 1,347
Likes: 1
From: Freeland, MD
422s, emissions, and cams Are there any 422 owners out there that have had to pass emissions? What were you running for a cam?
I have to ask because I have been warned that the "R1" cam might have trouble with emissions (it's a 232/237 114 LSA .560 max lift).
I have to ask because I have been warned that the "R1" cam might have trouble with emissions (it's a 232/237 114 LSA .560 max lift).
TECH Apprentice
Joined: Jan 2002
Posts: 356
Likes: 0
From: Texas
Re: 422s, emissions, and cams An MTI 422, R1 cam'd Vette passed Colorado emissions very well. There was definately room for a larger cam, according to the results. We only do idle and 2500rpm steady state tests here.
Todd
Todd
Thread Starter
TECH Fanatic
Joined: Nov 2001
Posts: 1,347
Likes: 1
From: Freeland, MD
Re: 422s, emissions, and cams That's good to hear, that is the current test here in the Houston area.
BTW, I got my car inspected today before it goes in for major surgery tomorrow. Hydrocarbons were 17 at 800 RPM idle and 0 at 2500 RPM. Impressively clean for such a high-performance nearly stock engine.
I'm gonna go with the R1. I figure if I have emission problems I can either just swap out cams and/or find the "right" place to get tested.
BTW, I got my car inspected today before it goes in for major surgery tomorrow. Hydrocarbons were 17 at 800 RPM idle and 0 at 2500 RPM. Impressively clean for such a high-performance nearly stock engine.
I'm gonna go with the R1. I figure if I have emission problems I can either just swap out cams and/or find the "right" place to get tested.
Thread Starter
TECH Fanatic
Joined: Nov 2001
Posts: 1,347
Likes: 1
From: Freeland, MD
Re: 422s, emissions, and cams [quote]Originally posted by Toxic Texan:
<strong>$$$$ always talks. Good luck on the transplant. When it is finished ya gotta take me for a ride at the next GTG.</strong><hr></blockquote>
Will do - but first I am gonna have to learn how to drive the thing before I take anyone else out along with me. Little things like not breaking the rear wheels loose at 70 MPH, not overdoing powersteering, and stuff like that . . .
<strong>$$$$ always talks. Good luck on the transplant. When it is finished ya gotta take me for a ride at the next GTG.</strong><hr></blockquote>
Will do - but first I am gonna have to learn how to drive the thing before I take anyone else out along with me. Little things like not breaking the rear wheels loose at 70 MPH, not overdoing powersteering, and stuff like that . . .
Re: 422s, emissions, and cams Wow, that's awesome that the R1 will pass emissions! I never ran cats on my T/A w/ the R1 cam in the 383, but I do know the fumes were enough to choke a small village w/ the ORP. <img src="gr_images/icons/wink.gif" border="0">
Good luck w/ the 422, and let us know the badass #'s when it's done!
Good luck w/ the 422, and let us know the badass #'s when it's done!
__________________
