Biggest cam to meet ULEV Emissions on an LS1
My swap is considered a 2001 F-Body. I run a 224/224 114LSA .566 lift cam and with my stock manifolds and cats pass emissions with flying colors. My heads supposedly flow 305cfm. I'm wondering how big I could go before running into trouble. Also, on a higher compression NA motor, what's the theory for in/out duration?
I don't want a HUGE cam that lopes hard (which wouldn't pass anyway), but I could certainly tolerate something slightly more aggressive. I guess the best question is what are the gnarliest street legal cams in 01 F-Bodys. |
Quote:
|
Quote:
That is a tough one. it takes about ten degress more duration to get a drop in compression. Closing up the LSA will also bleed off some compression, but pass smog-- that is a tough one.:huh: Just for info--- My cam has 254 degrees at .050 ---flat tappet solid lifter. |
Quote:
|
Quote:
|
Quote:
|
Here is a thread about it on tech.
Here is a quote: "A 112 LSA is almost guaranteed not to pass the sniffer in California; haven't seen one person do it even with tuning, a 224/224 114 Cam is biggest cam I've ever seen pass the sinffer here in Cali." Some guys do claim on the 2nd page to have passed with a 112 though. |
Quote:
Here are the specs on the cam I have in the Cobra. Product Line: Crane CompuCam Camshafts Part Number: CRN-444231 Cam Style: Hydraulic roller tappet Basic Operating RPM Range: 2,400-6,000 Duration at 050 inch Lift: 220 int./220 exh. Valve Lift with Factory Rocker Arm Ratio: 0.498 int./0.498 exh. lift Lobe Separation (degrees): 110 Computer Controlled Compatible: Yes Grind Number: 2040 CARB EO Number: D-225-46 |
Well you can see here I'm well above the average with my setup, but still quite a bit of headroom it seems.
Code:
Hydro Carbons |
Quote:
We had some serious LS1 guys working here a few years ago. They told me the same thing- 224/224 114 Cam is biggest cam to pass Calif. smog. Then one got fired and the other quit.:drink: |
All times are GMT -7. The time now is 09:49 PM. |
Powered by vBulletin® Version 3.6.8
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.