LOW VACUUM NEW CAM

I

izzleon

New Member

May 7, 2007

22

0

0

May 7, 2007

#1

• May 7, 2007

• #1

HI THERE IM WONSERING IF ANY OF U GUYS THAT HAVE HAD THE E303 INSTALLED HAVE EXPERIENCED THE SAME THING. HAVE A 93 5.0 AND INSTALLED THE FOLLOWING
.030 OVER, GT-40 HEADS UPPER AND LOWER INTAKES, 1.6 ROLLERS, AND E303 CAM. NOW HOW MUCH VACUUM ARE U GUYS READING? IM READING ABOUT 5 IN HG
AND AT HIGHER RPM I HAVE MORE VACUUM., NO LEAKS AT ALL. IS IT THE CAM?

 

M

Mafia Mustang

Member

Sep 17, 2006

111

0

17

Arizona

May 8, 2007

#2

• May 8, 2007

• #2

Im about to run the same set up i hope i dont have the same problem

 

Aryan15

Member

Sep 22, 2003

236

0

17

CA

May 8, 2007

#3

• May 8, 2007

• #3

Try a different gauge or a different vacuum source. You should have more at idle.

 

jammer84_03

New Member

Nov 30, 2003

468

1

0

May 8, 2007

#4

• May 8, 2007

• #4

nope....see my sig. but im about to change to a cc xe264 for a cam and bore 30 over.

 

ninety15.0

New Member

Mar 10, 2004

1,336

0

0

May 8, 2007

#5

• May 8, 2007

• #5

yup thats wayyy too low. I think you may need to check for vac leaks. With my steeda #18 cam i see about 15" at idle...and i think stock 5.0's see about 16-18"

 

I

izzleon

New Member

May 7, 2007

22

0

0

May 8, 2007

#6

• May 8, 2007

• #6

not the gauge

yeah i tryied various but its not the gauge, i think the cam has to do with it....any one running this same set up?

 

8

87AODGT

Founding Member

Jan 6, 2001

373

1

19

Toms River, NJ

May 10, 2007

#7

• May 10, 2007

• #7

are you sure the rocker arms are adjusted correctly? what's the timing set at? both of those can affect vacuum

 

I

izzleon

New Member

May 7, 2007

22

0

0

May 10, 2007

#8

• May 10, 2007

• #8

yeah

we measured the shim thickness on the pedestal for the rockers. according to the instructions. was about .060. need to double check.