90mm LSX install complete...pics within
Looks like its worth ~2-3 tenths on a good H/C car. Typically was in the high 11.2 to 11.3 range in similar weather. Ran 11.08 with it this past weekend

it was still a tad rich...I'll lean it out some and retry soon
The LS1edit MAF tables I found on here for descreened Z06 mafs (with the calibration resistor cut out if bought from SLP or whatnot) were VERY close in tune
http://www.c5howto.com/index.php?article=25
http://www.c5howto.com/index.php?article=25
Good thing is it'll provide the fresh air to the pCV but will also draw on the excess at WOT since high velocity flow over an orifice causes a slight vacuum.
The Best V8 Stories One Small Block at Time
I would wait on the intake untill you get your heads or maybe a package deal for all of them. The 90mm LSX intake would be to much for a stock bolt on car wait for H/C.
My setup will pull a slight vacuum at WOT to help get rid of combustion gas buildup
My setup will pull a slight vacuum at WOT to help get rid of combustion gas buildup

Yea I here what your saying and I keep trying to picture what the difference would be between the fresh air hose and a small breather would be. GM hooked it up to the T/B for a reason emmissions I guess. Maybe even plug the fitting off at the valve cover and run a metco breather at the oil spout. Which way do you think the air flows from the T/B through the freash air hose to the valve cover or valve cover to the T/B?






