cammed/Boosted LS motor, high load idle

98vtec · Post by **98vtec** » Sat Oct 31, 2009 2:33 am

I'm currently tuning a built LS boosted motor with what he says is crower stage 2 cams. I dont know if they are turbo cams or all motor cams but they have a pretty good lope to them and it idles around 400-500mbar (~900-1000 RPM). Is this typical for this motor? It doesnt have adjustable gears unfortunately so i cant do anything with the overlap. Running the idle ignition gives it a bit smoother idle but mostly im just wondering if the load is typical for this kind of setup. Im sorry i dont have much specifics for the internals. I know its a built LS with 9:1 compression, crower valvetrain, crower cams and precision 880 injectors. Thanks

thething96 · Post by **thething96** » Sat Oct 31, 2009 2:01 pm

I had a built n/a gsr.12:5:1 with blox type b cams, the car would idle at around 450 mbar, so it sounds about right, possibly.........

Post by **Bugermass** » Sat Oct 31, 2009 11:21 pm

yes, with larger cams its normal for the motor to pull less vaccum at idle.