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Cammed 01 GT running lean, slow acceleration. Stalling when shifting into gear.

  • Thread starter Thread starter PDHSB
  • Start date Start date Aug 25, 2020

PDHSB

Member
Jun 11, 2020
37
5
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VA
Aug 25, 2020
#1
  • Aug 25, 2020
  • #1
Recently put in the Comp stage 2 camshafts along with springs. My 0-60 is very sluggish, around 8-9 seconds depending on the pull. I can smell how rich the engine is running just from the smell. Also, when I shift into gear, I almost always stall, have to open the throttle just to keep it alive.

Did a compression test, looks like about 180 on all cylinders but #5 which is at 120. I'm not sure if I have a vacuum leak, maybe an exhaust leak or something else. I should mention that I have a Dorman intake manifold and it's definitely holding me back in power, but this is far below stock performance.
 

Potomus Pete

I'm still waiting for the fully nude shots
5 Year Member
Mar 7, 2019
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Aug 25, 2020
#2
  • Aug 25, 2020
  • #2
What heads ?? Did it start right after the cam?
 

PDHSB

Member
Jun 11, 2020
37
5
18
VA
Aug 25, 2020
#3
  • Aug 25, 2020
  • #3
Potomus Pete said:
What heads ?? Did it start right after the cam?
Click to expand...
This issue was present before the cam swap. I have stock heads, the passenger head was a remanufactured one though.
 
S

Shuttleman83

Active Member
Jun 30, 2019
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Aug 26, 2020
#4
  • Aug 26, 2020
  • #4
Adjust your idle correctly, clear the KAM of the computer

Dorman Intake = BAD.
 

PDHSB

Member
Jun 11, 2020
37
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Aug 27, 2020
#5
  • Aug 27, 2020
  • #5
Just found out I had a nearly unplugged PCV valve. Huge vaccum leak. Hopefully replacing that will clear up some issues.
 
Reactions: Potomus Pete

PDHSB

Member
Jun 11, 2020
37
5
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VA
Aug 27, 2020
#6
  • Aug 27, 2020
  • #6
Shuttleman83 said:
Adjust your idle correctly, clear the KAM of the computer

Dorman Intake = BAD.
Click to expand...

Do you think the short intake runners could be holding me back that much on the Dorman? Should I go to a junkyard and find a PI manifold or should I just go with a Ford Racing one for $250?
 
S

Shuttleman83

Active Member
Jun 30, 2019
239
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28
USA
Aug 27, 2020
#7
  • Aug 27, 2020
  • #7
PDHSB said:
Do you think the short intake runners could be holding me back that much on the Dorman? Should I go to a junkyard and find a PI manifold or should I just go with a Ford Racing one for $250?
Click to expand...

Yes actually. The Dorman intakes are known to cause more problems than even a stock brand manifold. Start with a pi intake (used pi from junkyard in good shape or Ford Racing. You can get 10-15 wheel hp just from switching this, provided everything else is running good together.
 
S

Shuttleman83

Active Member
Jun 30, 2019
239
13
28
USA
Aug 27, 2020
#8
  • Aug 27, 2020
  • #8
PDHSB said:
Just found out I had a nearly unplugged PCV valve. Huge vaccum leak. Hopefully replacing that will clear up some issues.
Click to expand...

Thats not good, also might as well just get a new pcv grommet as well, as they rot out quick.
 
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