my b18b vacuum is at -19 at idle and at like 22-23 at decel... but b4 my y7 was at 21 at idle and 25 at decel... i was wondering if its normal for the ls to be around there? both motor were stock internally. anyone else with an ls? cuz i wanna see if that vacuum is normal because i'm worried and i don't wanna blow my hg or anything. thanks

 

Make sure the ignition timing is correct. Also was this with the same guage?

 

On my LS low-idle is around -23 on the autometer.

 

D15B7, 12 in/mg at idle, 22 in/mg on coastdown.

BIG ------- CAM!

 

edit: its -21, i was wrong

 

My LS usually sits around 19 in.HG at idle, and around 21 on the decel. You're fine, don't worry about it.

 

my unknown milage, $50 (yes i paid $50 for my running motor), B18a pulls 21 at idle and about 24-25 on decel. shes healthy

 

she must sound awesome

 

kindy lumpy yet quite with the stock cat. choking it, should have some "POP" in the exhaust note when I put the glasspack in place of the cat