B303 cam swap on my 92 GT now running rich and falls on its face, idles fine tho.

1992 5.Slow GT

New Member
Oct 4, 2018
10
0
1
18
Youngstown, Ohio
Also did bbk headers, lifter, cap & rotor. All sensors and vacuum are hooked up, bought new bosch O2 sensors. Also deleted EGR, that mightve caused it too. Timing should be where it was from factory.
 
  • Sponsors(?)


General karthief

wonder how much it would cost to ship you a pair
Mod Dude
Aug 25, 2016
17,169
5,487
193
polk county florida
No head or intake upgrade? stock gears?
if I remember right that b cam works in the upper rpm range, stock heads, intake and throttle body may be running out of air flow when the cam starts to work.
 

Mustang5L5

i'm familiar with penetration
Mod Dude
Feb 18, 2001
33,292
9,587
224
Massachusetts
B303 makes nice power up top, so it shouldn't be falling over. Did you degree the cam when it was installed?

Double check the basics. Timing, firing order, fuel pressure, dump the codes and run the cylinder balance test.
 
  • Like
Reactions: Exrace89GT

1992 5.Slow GT

New Member
Oct 4, 2018
10
0
1
18
Youngstown, Ohio
Oops, kinda forgot to look back at this thread, it turned out to be the timing after all. It was my first cam swap and my dad's first time with a ford but luckily had a local fox tuner come out, chip the computer, and set the timing car runs great now and is over a second quicker than my last year's PB at the strip. Thank you all for your help
 
Thread starter Similar threads Forum Replies Date
T Sn95 Cam Swap Without Pulling Motor? 1994 - 1995 Specific Tech 9
S GT40 heads, b303 cam $$ 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 3
S Cam Choice for my 66... b303 or e303? The Welcome Wagon 1
T Installed b303 cam now missing bad. Timing is good set at 0. What am i missing Fox 5.0 Mustang Tech 3
teebluestang Installing A Cam B303 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 25
XerxesTheGodKing Gt40p Heads + B303 Cam Fox 5.0 Mustang Tech 2
5 Expired Foxbody 5.0 B303 Cam Engine and Power Adder 2
shakey1378 Expired Wtb B303 Cam Or Other Engine and Power Adder 1
Clint426 How Does The 94 Cobra Pcm Like The B303 Cam? SVT Tech Forum 0
fox04 b303 cam barely chops? Fox 5.0 Mustang Tech 7
J B303 Cam for Sale 60.00 plus shipping Engine and Power Adder 3
plum819 Advancing B303 cam Fox 5.0 Mustang Tech 2
T B303 Cam Fox 5.0 Mustang Tech 7
MyHoFoSho B303 cam questions Fox 5.0 Mustang Tech 36
8 So I bought a B303 cam............ Fox 5.0 Mustang Tech 11
S b303 cam in stock motor Fox 5.0 Mustang Tech 7
9 brakes are really hard to push after b303 cam install! Fox 5.0 Mustang Tech 14
O I need a cam card for a B303 roller Fox 5.0 Mustang Tech 4
Z Anyone have AFR 165s with B303 cam? Fox 5.0 Mustang Tech 2
X B303 cam and 1.7 rocker question Fox 5.0 Mustang Tech 8
Z Cheapest place to get a B303 Cam... 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 21
89RedFoxGT E303 or B303 Cam? and other Questions. Fox 5.0 Mustang Tech 16
N Help Help Need B303 Cam Card Specs Please Fox 5.0 Mustang Tech 4
8 b303 cam problems Fox 5.0 Mustang Tech 3
BaLListic_Evo B303 Cam worth the install??? Fox 5.0 Mustang Tech 12
9 B303 cam????? Fox 5.0 Mustang Tech 9
K Looking for b303 cam audio or video Fox 5.0 Mustang Tech 7
MustangPunk302 B303 Cam Fox 5.0 Mustang Tech 10
5 Question in regards to B303 Cam and setup... Fox 5.0 Mustang Tech 9
Pokageek B303 Cam and Ford Racing Performance Pulleys..Bad Idea? 1994 - 1995 Specific Tech 6
T TF stage 2 cam v. B303 Fox 5.0 Mustang Tech 25
roached1 B303 cam and ignition timing? 1994 - 1995 Specific Tech 3
J B303 cam advantages and disadvantages? 1994 - 1995 Specific Tech 29
K B303 Cam Question Fox 5.0 Mustang Tech 48
X B303 cam install help 1994 - 1995 Specific Tech 4
2 B303 cam? Do I need to change distributor gear ?? Fox 5.0 Mustang Tech 6
MrKwik B303 cam...anyone know whats stamped on end Fox 5.0 Mustang Tech 7
dderek Everyone says my B303 is junk, opinions on best Daily driver street cams? Fox 5.0 Mustang Tech 17
90mustangGT Comp XE270HR vs. FMS B303 cams. Fox 5.0 Mustang Tech 1
T will b303 cam work alright with afr 165 heads 1994 - 1995 Specific Tech 5
beaver2489 B303 cam ok with SD?? Fox 5.0 Mustang Tech 2
IndyBlk5.0 the scoop on b303 cam with 1.7 rockers Fox 5.0 Mustang Tech 22
8 Question about B303 Cam? Fox 5.0 Mustang Tech 2
eliaseje 1.7 RR and B303 Cam? Fox 5.0 Mustang Tech 10
D 94 GT Convertible Project GT40P, B303, etc 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 6
lxhatch91 WTB/Trade Need B303 use Engine and Power Adder 0
lxhatch91 B303 question 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 5
G B303 information? 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 0
Bill88Stang B303 Or E303 With This Combo. No Flames Please Fox 5.0 Mustang Tech 3
Bill Cool Engine B303 And E303...do They Need A Tune? Fox 5.0 Mustang Tech 26
Similar threads