help my car is wierd

[86Transam]

someone help me please, i have a cam in my car with .488 intake and .488 exhaust. and my vaccum is going nutso wich is making my brake pedal hard. by the way i have stock heads, this might sound retarted but can someone give me direction in how to solve this problem. if anyone wants to im me for my screenname is badass86transam


Thanks Matt

[Tru2Chevy]

Could you give us some more info on the rest of your setup? Also, do you have the full cam specs? Lift alone doesn't have a huge effect on vaccum.

- Justin

[crainholio]

Originally Posted by 86Transam

someone help me please, i have a cam in my car with .488 intake and .488 exhaust. and my vaccum is going nutso wich is making my brake pedal hard.

Thanks Matt

Like Tru2 said, more details are needed. I'm running a 0.563" intake/exh cam and my brakes are fine.

[Ian]

Originally Posted by 86Transam

my vaccum is going nutso wich is making my brake pedal hard.

Vaccum going "nutso" sounds like a vaccum leak to me. Check for intake leaks.

[86Transam]

Attribute Value
Mfg. Chevrolet
Engine Small Block
Lifter Type HYD
Cam Lift Int. .325
Cam Lift Exh. .325
Valve Lift Int. .488
Valve Lift Exh. .488
Duration @ .050 Lift 232/234
Duration @ .006 Lift 300/308
Lobe C/L 108
Overlap 80
Cam Series Pro-5000
This is with stock heads and a 750 edelbrock carb.

Matt