whys my car so slow?

5.0fox

Member

Feb 10, 2003

410

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17

buckley/enumclaw wa

May 30, 2005

#41

• May 30, 2005

• #41

sorry i havent replied ive been outa town. To clear things up i did have the performer rpm on the car when i ran. Also the heads were slightly milled to be sure they were flat. Compression is great and leakdown is low so its not the bottom end. The bumps in the exhaust ports were taken out and the ports were smoothed. any other questions?

 

5.0fox

Member

Feb 10, 2003

410

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17

buckley/enumclaw wa

May 30, 2005

#42

• May 30, 2005

• #42

Wheres thumper with the specs on these heads?

 

5.0fox

Member

Feb 10, 2003

410

0

17

buckley/enumclaw wa

May 30, 2005

#43

• May 30, 2005

• #43

ttt guys help me!

 

maverick0716

Founding Member

Jan 12, 2002

3,924

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56

Chilliwack, BC, Canada

May 30, 2005

#44

• May 30, 2005

• #44

89sleeper - I just wanted you to know I wasn't calling "BS" on you...I wouldn't do that. I'm just amazed on how fast your car is for it being stock.....good job!

 

B

Black93SVT

Founding Member

Jun 12, 2002

363

0

0

North Andover MA

May 30, 2005

#45

• May 30, 2005

• #45

ya something is definitly wrong my 93 cobra had a stock 90 GT motor in it cause i blew up the cobra motor(so basically a GT but heavier cause of misc cobra suspension and brakes). Bone stock with all GT electronics and just catback i went 14.094 at 100.16mph and a 2.34 60ft. perhaps if you can show us your time slip step by step like by the ft marks 300-1/8mi-1000ft etc we can see where you're running out of steam and try to help you.

 

txstang84

15 Year Member

May 21, 2005

1,639

42

69

Tuscola, tx

May 30, 2005

#46

• May 30, 2005

• #46

the D0OE's carry a 60 cc combustion chamber...so they actually shouldn't hurt your compression any-i'm with jb89 bump your timing to 14*...play with the fuel pressure up and down, see what works best for you. my friends lx vert worked really well with 14* advance and about 45-50psi pressure...no detonation-even with the stock pump.

However, change that thing at your EARLIEST convenience with at least a 155-190lph...you do need to upgrade your fuel system more thoroughly...24's should do you well

 

5.0fox

Member

Feb 10, 2003

410

0

17

buckley/enumclaw wa

May 30, 2005

#47

• May 30, 2005

• #47

24 lbers are next on the list. tommorow i will bump my fuel pressure to about 42 or 43 psi and see if it helps. then ill advance the timing and see what that does for it.

 

04sleeper

Founding Member

Jun 22, 2002

2,674

14

89

Dallas, TX

May 31, 2005

#48

• May 31, 2005

• #48

maverick0716 said:

89sleeper - I just wanted you to know I wasn't calling "BS" on you...I wouldn't do that. I'm just amazed on how fast your car is for it being stock.....good job!

Click to expand...

I know you weren't. I never thought you did.

It's all good!

 

payupsucka

Member

Sep 28, 2003

324

0

16

Keeping it grimy in Fall river MA.

May 31, 2005

#49

• May 31, 2005

• #49

Michael Yount said:

Stock intake is KILLING you....

Click to expand...

 

NKau

Founding Member

Dec 15, 2001

1,346

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37

Jefferson, WI

Jun 1, 2005

#50

• Jun 1, 2005

• #50

You should still be running way better with the stock injectors and fuel pump. Something else is going on. Wondering if you replaced the valvesprings when the heads were done?

 

2000xp8

SN Certified Technician

Aug 8, 2003

8,029

1,621

194

NJ

Jun 1, 2005

#51

• Jun 1, 2005

• #51

payupsucka said:

Click to expand...

He said a couple posts up that when he ran the car he had the performer rpm on it.