ls1408cp

iTrader: (37)

I was wanting to hear from people that have had there power brakes not work because of the cam being to big. What size cam was it? thanks

TXCAMSS

iTrader: (60)

FWIW- Mine stopped on a dime as long as I was driving around. I only had issues when trying to foot brake it. I had 8" of vacuum when I first held the brake pedal and when I eased up to inch in on the tree, I would lose another few inches and was hard to hold. On the other end of the track it had good stopping ablity. I also ran a vacuum canister that helped also. It's perfectly safe just hard to load up the converter to launch is all.

248/252 112+4 cam shaft

ls1408cp

iTrader: (37)

thanks for the info my cam is about the same size.

theblur98ss

iTrader: (71)

I'm driving my 264/272 solid roller and it's still stops the same.

TXCAMSS

iTrader: (60)

My car stopped on a dime (like stock), but if you try to stage up and launch, car will push through the beams. It's not a safety issue in any way what so ever.

jay_99z

iTrader: (5)

No problems here with 248/254 .611 .613. (TSP Giant) and 383

GTA91

iTrader: (14)

My cam is over 250* in a 402 and my brakes work fine. I've got LS1 brakes on all 4 corners and a LS1 master cylinder... no problems at all.

T6Rocket

Why not fully stage at idle, then load 'er up? Holds the car a lot better.

If I can do it on a Pro Tree with my Turbo I-6 car, you guys should be able to do it V8 N/A. I do use a 50-shot to help get things going, cause I cant get much boost on the line!

Al

TXCAMSS

iTrader: (60)

Each time you lift the brake pedal to blink in, you lose some of the vacuum that's needed to hold the car. Blink it 3 times to shallow stage at idle and you are left with almost no vacuum and if you bring the rpms up to load the converter, you are gonna roll.

On a pro tree I load up blink in once and I'm ready to launch.

I fixed the problem by going to a manual brake set up and it rocks!

If you are racing occassionally on a weekend for just a 1/8 or 1/4 mile time then don't worry about the vacuum issue.

I race competitively every chance I get and lost twice by pushing through the beams while staging. It won't ever happen again with the manual brakes

T6Rocket

Or get a Hydraboost (sp?) brake booster. My buddy has one on his Syclone - he said he can stop the truck with one toe!

Al