91 Gt Daily... Mid 12's

David Pepiton

Active Member

Dec 17, 2011

662

68

49

Laveen, Arizona

Jul 19, 2013

#21

• Jul 19, 2013

• #21

I think some tuning is what's needed not throwing parts at the car. after you map out your a/f ratio you can determine where you need to add if you even need to. but I've found that stock heads like that dont make power at the higher rpms and that may be your issue your experiencing.

 

clement

Founding Member

Feb 27, 2001

1,106

52

59

Oak Cliff

Jul 20, 2013

#22

• Jul 20, 2013

• #22

IIRC 38-39 psi without manifold vacuum on the regulator. so pull the vacuum line.

 

sen2two

I've been lubing and pulling it all morning

5 Year Member

Jul 18, 2013

396

58

59

Jul 20, 2013

#23

• Jul 20, 2013

• #23

i just finished cleaning the engine bay to check over everything. and i found it has a bbk fuel pressure power plus regulator and gauge. sweet...

should i pull the vacuum line off the bbk regulator as well to get the correct reading on the gauge?

 

TOOLOW91

If you're the village idiot what's that make me?

20+ Year Stangneter

Nov 29, 1999

8,483

8,687

234

S.I.NY

Jul 20, 2013

#24

• Jul 20, 2013

• #24

yes you should to check and change it then reinstall the vac , ill bet it's leaning out due to the injector and meter Mis match


Sent from my iPhone using my fingers

 

sen2two

I've been lubing and pulling it all morning

5 Year Member

Jul 18, 2013

396

58

59

Jul 20, 2013

#25

• Jul 20, 2013

• #25

the injectors and maf are stock.

 

sen2two

I've been lubing and pulling it all morning

5 Year Member

Jul 18, 2013

396

58

59

Jul 20, 2013

#26

• Jul 20, 2013

• #26

fuel pressure is at 42-43psi with the vacuum line disconnected from the bbk fuel pressure regulator. And at 39psi with the vacuum connected.

i guess thats a little high which could be the cause of the break up. but i will leave it there until i put a wideband on it to make sure.

 

1200gt

Active Member

Nov 29, 1999

357

40

39

Jul 21, 2013

#27

• Jul 21, 2013

• #27

Sharad said:

You could take a look at how I ran 12s on the stock 302.

http://www.mustang50magazine.com/featuredvehicles/m5lp_0812_1989_ford_mustang_lx/index.html

Click to expand...

Dang! What did you guys do with that stock tailpipe set?! I have been looking everywhere for stock 2.25 s/s...

 

Sharad

ALWAYS choose the V over the P!!! Wait... what?

Jan 5, 2011

1,562

480

94

Fort Myers, Florida

Jul 22, 2013

#28

• Jul 22, 2013

• #28

...threw em away...