junkz28

iTrader: (4)

quick question: after i installed this new cam, my brake pedal goes to the floor due to lack of vacuum. What is the procedure for installing a larger vacuum canister? is it a direct replacement for the stock one and the stock lines should work? any help is appreciated.

Dark Shadow

what size cam is it? and have you retuned it for the cam? set the idle at 900rpm if its a big cam and you should be fine.

i had a 240/244/112lsa .6lift in a stock ls1 and never had problems with vacuum

DaddySS

Lack of vacuum will not cause the brake pedal to go to the floor. You need to check further into the source of the problem.

junkz28

iTrader: (4)

242/244 .615 lift on a 112lsa. My idle is at 700 and it is getting retuned tomorrow. The pedal only goes to the floor when i'm stopped basically or just idling around.

Dark Shadow

dont do anything yet till its tuned what is the CI of the motor? like said above the brake pedal shouldnt go stright to the ground did you bleed the brakes at all? you might have air in the line.

but again just wait and see after you get the tune.

2000_SS

iTrader: (24)

did you remove the intake? if so, did you reconnect the vacuum line that goes to the brake master cylinder from the intake?