1.7 rockers with emmission cam
10-07-2004, 03:05 PM
#1
Registered User
Thread Starter
Join Date: May 2004
Posts: 406
1.7 rockers with emmission cam
I plan on gettin a cc305 and supporting valvetrain parts sometime in the next month. I really would want to go more aggressive on my cam, but I just don't want to go through the hassle of trying to beat the emission testing and all that junk.
Instead of doing 1.6 rockers, what would the 1.7 do in terms of cam behavior? I know its supposed to make the cam act bigger, but by acting bigger, does that mean it will give me more lope, and less chance of passing emissions? If its only adding more lift, and not duration, or changing the lsa, i dont see how it could hurt, other than adding some more stress to the valvetrain(which i will take care of with some better springs).
Please fill me in
Instead of doing 1.6 rockers, what would the 1.7 do in terms of cam behavior? I know its supposed to make the cam act bigger, but by acting bigger, does that mean it will give me more lope, and less chance of passing emissions? If its only adding more lift, and not duration, or changing the lsa, i dont see how it could hurt, other than adding some more stress to the valvetrain(which i will take care of with some better springs).
Please fill me in
10-07-2004, 03:13 PM
#2
Registered User
Join Date: Jul 2000
Location: Woodstock,Georgia
Posts: 1,428
Re: 1.7 rockers with emmission cam
More lift from the 1.7s will increase emmissions....wheather you can pass or not I dont know. I would just go with a 224/230 xe cam with 1.6rr and be done with it.
10-07-2004, 03:48 PM
#3
Registered User
Thread Starter
Join Date: May 2004
Posts: 406
Re: 1.7 rockers with emmission cam
Originally Posted by gb95zconv
More lift from the 1.7s will increase emmissions....wheather you can pass or not I dont know. I would just go with a 224/230 xe cam with 1.6rr and be done with it.
10-08-2004, 10:37 AM
#4
Registered User
Join Date: Aug 2001
Location: Orange County, CA
Posts: 644
Re: 1.7 rockers with emmission cam
Originally Posted by vin1382
224/230 xe cam with 114 lsa you mean. thats a possibility as well. i heard its pretty hard to pass on a 112 lsa with that cam.
Jody J.
10-08-2004, 11:30 AM
#5
Registered User
Thread Starter
Join Date: May 2004
Posts: 406
Re: 1.7 rockers with emmission cam
Originally Posted by JodyJ
Not hard at all. I have the 224/230 xe with 112 lsa and I passed with flying colors. I have a '94 Camaro with a 355ci, fully P&P heads, 58mm tb, SVO 30# injectors, MSD Ditigal 6, Mac headers, Crane Cams 1.6 Gold RR, and MadZ28.com tuning and that's in California
Jody J.
Jody J.
DAMN! i guess as long as you have cats on, it should be either close, or should pass. Now I am going to strongly consider this cam again. Thanks!
10-08-2004, 12:11 PM
#6
Registered User
Join Date: May 2004
Location: Bay Area California
Posts: 488
Re: 1.7 rockers with emmission cam
Now thats what I like to hear. I wanna see your smog numbers so I can get an idea. I remember calling Thunder and they recommended the 305 and the xe cam that you have. They made it clear that it will pass smog, but with some fine tuning. Nice! 
I wanna see your smog numbers so I can get an idea. I remember calling Thunder and they recommended the 305 and the xe cam that you have. They made it clear that it will pass smog, but with some fine tuning. Nice!
Originally Posted by JodyJ
Not hard at all. I have the 224/230 xe with 112 lsa and I passed with flying colors. I have a '94 Camaro with a 355ci, fully P&P heads, 58mm tb, SVO 30# injectors, MSD Ditigal 6, Mac headers, Crane Cams 1.6 Gold RR, and MadZ28.com tuning and that's in California
10-08-2004, 12:12 PM
#7
Registered User
Join Date: Aug 2001
Location: Orange County, CA
Posts: 644
Re: 1.7 rockers with emmission cam
Originally Posted by Z06Z28
Now thats what I like to hear. I wanna see your smog numbers so I can get an idea. I remember calling Thunder and they recommended the 305 and the xe cam that you have. They made it clear that it will pass smog, but with some fine tuning. Nice!
I wanna see your smog numbers so I can get an idea. I remember calling Thunder and they recommended the 305 and the xe cam that you have. They made it clear that it will pass smog, but with some fine tuning. Nice! Jody J.
10-08-2004, 12:30 PM
#9
Registered User
Thread Starter
Join Date: May 2004
Posts: 406
Re: 1.7 rockers with emmission cam
Originally Posted by Z06Z28
Now thats what I like to hear. I wanna see your smog numbers so I can get an idea. I remember calling Thunder and they recommended the 305 and the xe cam that you have. They made it clear that it will pass smog, but with some fine tuning. Nice!
I wanna see your smog numbers so I can get an idea. I remember calling Thunder and they recommended the 305 and the xe cam that you have. They made it clear that it will pass smog, but with some fine tuning. Nice!
10-08-2004, 04:25 PM
#10
Registered User
Join Date: Aug 2001
Location: Orange County, CA
Posts: 644
Re: 1.7 rockers with emmission cam
As promised, here you guys go. http://jody.dltechnologies.com/z28smog_small.jpg
Only thing I did was swap out the high flow cat with the stock (probably wasn't neccesary) and change the fans to come on 205 and 210. I think what really helped out too, was the car was idling on the rollers for about 20 mins while they were doing the paperwork.
Jody J.
Only thing I did was swap out the high flow cat with the stock (probably wasn't neccesary) and change the fans to come on 205 and 210. I think what really helped out too, was the car was idling on the rollers for about 20 mins while they were doing the paperwork.
Jody J.
Thread
Thread Starter
Forum
Replies
Last Post
dbusch22
Forced Induction
6
10-31-2016 11:09 AM
oldschool
Parts For Sale
16
02-09-2016 09:21 PM