high speed loss of power

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panagiotis21

New Member

May 25, 2006

2

0

0

May 25, 2006

#1

• May 25, 2006

• #1

hi, i have an 87 mustang 347 stroker and a holley 650 double..4.10 gears.My problem is that when i take off the car is is pulling hard till i hit high speed,around the end of 4th and through all of 5th i feel the car struggling not alot but noticable.Not pulling like it should.can it be a fuel prob.LIke i said only at high speed .thx

 

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emagdnim

Active Member

Feb 5, 2003

391

15

28

May 25, 2006

#2

• May 25, 2006

• #2

Id blame it on your ported e7s which are choking your 347 on the top end.

 

Roland69

Sergeant Tangnet

Sep 17, 2005

2,867

3

58

43

Port Elgin, Ontario

May 25, 2006

#3

• May 25, 2006

• #3

Verry well could be just that

 

just4bob50

Active Member

Apr 2, 2005

504

5

28

Pa.

www.gotstang.com

May 25, 2006

#4

• May 25, 2006

• #4

I seem to be having the same problem my self right now. the motor doesnt make any power past 5000 rpms. At 5000 theres 10lbs of boost and at 5500 thers 12lbs, but power falls off after 5000. Time for new heads.

 

8

86bluecobra

Advanced Member

Dec 20, 2004

4,265

12

69

B.C. Canada

May 25, 2006

#5

• May 25, 2006

• #5

it maybe that your float bowls are not set high enough and you are starving the engine of fuel at the higher rpm's. Adjust the float bowl level up and see if that helps any.