F303 whats your opinion?

oneba87lx · 06-18-2001, 01:40 PM

I recently put together a stock short block w/a f303, gt 40 heads, and gt 40 intake. It runs good above 2000rpm, but less than that its not running as i expected. I'm sure i have a couple of vacuum leaks which i haven't pinpointed yet. I just wondered if anyone else has these problems with this cam.

thanx

06-18-2001, 04:22 PM

You appear to be over-cammed. Vacuum leaks or no leaks, that's your problem. I'm surprised the car can actually stay idling. What made you go so extreme - why not a B or E?

------------------
'90 LX 5.0; 12K original miles (no sh*&); 3.55 gears; pulleys;Edelbrock Performer Heads; BBK shorties; MSD 6AL box w/ blaster 2 coil; Motorsport E303 cam; Pro-M 75mm MAF; BBK 70mm TB; Eibach spring kit; Southside welded subs; K&N cone filter charger; Hurst shifter; fiberglass turbo hood; A/C-less; rear seat-less; cat-less; 2 chamber Flos; Corbeau racing seats (fronts);
30# injectors; JMS Chip; 190 lb fp; TFS track heat Intake (12.299 @ 113)

gray87GT · 06-18-2001, 05:11 PM

I got mine done this spring, and it ran like sh*t. I adjusted the TPS, fuel pressure to 39 and it made a HUGE improvement. It only surges at start up, after it warms for a couple minutes it's good to go. I was extremely dissapointed at myself for getting the F cam cause it was a TURD under 3 grand, it felt like it did before I made ANY mods. I got 3.73's last month and it is awesome. If you don't have gears get them, cause if you think it has power now just wait.

------------------
87 GT, BBK shorty's, MAC High-Flow H-pipe, ASP pullies, BBK 70mm T.B., Cobra intake, no smog pump, Windsor Jr irons, Comp cams 1.6 rollers, F303 cam, FMS HD water pump, Tri-Ax, FMS subframes, Battle boxes, SSM liftbars, FMS King Cobra clutch, mass-air conversion, 73mm C&L, 24lb injectors, BBK AFPR, 3/8" no EGR spacer,MAC pro-dumps, FMS 3.73's, and other piddly sh*t.

grey92lx · 06-18-2001, 05:12 PM

Im using the F303 cam with no problems, I like the cam. Really pulls hard above 3800rpm.

------------------
92'LX Notchback, BBK Fenderwall Cold Air EDELBROCK Per. Intake, C&L 73mm MAM, 70mm TB, FMS 24 lb injectors, Race Crank Pulley,Windsor Jr iron Heads port & polished, f303 cam, 1.6 Crane roller rockers MSD 6A, FMS 9mm wires, Underdrive pulleys, JBA headers, flowtech X, 2 ch. flow, 3.73, Pro 5.0 Shifter HD FMS Radiator, Energy Suspension Tranny Mount, Max Motorsport subs, Max Motorsport Lower Control Arms, ...KN 12.91@105mph
60ft 1.72 w/ET Drags

06-18-2001, 01:40 PM	#1
oneba87lx Registered Member Join Date: Jun 2001 Location: lake city, FL Posts: 26	F303 whats your opinion? I recently put together a stock short block w/a f303, gt 40 heads, and gt 40 intake. It runs good above 2000rpm, but less than that its not running as i expected. I'm sure i have a couple of vacuum leaks which i haven't pinpointed yet. I just wondered if anyone else has these problems with this cam. thanx

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06-18-2001, 04:22 PM	#2
bada$$lx Guest Posts: n/a	You appear to be over-cammed. Vacuum leaks or no leaks, that's your problem. I'm surprised the car can actually stay idling. What made you go so extreme - why not a B or E? ------------------ '90 LX 5.0; 12K original miles (no sh*&); 3.55 gears; pulleys;Edelbrock Performer Heads; BBK shorties; MSD 6AL box w/ blaster 2 coil; Motorsport E303 cam; Pro-M 75mm MAF; BBK 70mm TB; Eibach spring kit; Southside welded subs; K&N cone filter charger; Hurst shifter; fiberglass turbo hood; A/C-less; rear seat-less; cat-less; 2 chamber Flos; Corbeau racing seats (fronts); 30# injectors; JMS Chip; 190 lb fp; TFS track heat Intake (12.299 @ 113)

06-18-2001, 05:11 PM	#3
gray87GT Registered Member Join Date: Jan 2001 Location: Minnesota Posts: 177	I got mine done this spring, and it ran like sht. I adjusted the TPS, fuel pressure to 39 and it made a HUGE improvement. It only surges at start up, after it warms for a couple minutes it's good to go. I was extremely dissapointed at myself for getting the F cam cause it was a TURD under 3 grand, it felt like it did before I made ANY mods. I got 3.73's last month and it is awesome. If you don't have gears get them, cause if you think it has power now just wait. ------------------ 87 GT, BBK shorty's, MAC High-Flow H-pipe, ASP pullies, BBK 70mm T.B., Cobra intake, no smog pump, Windsor Jr irons, Comp cams 1.6 rollers, F303 cam, FMS HD water pump, Tri-Ax, FMS subframes, Battle boxes, SSM liftbars, FMS King Cobra clutch, mass-air conversion, 73mm C&L, 24lb injectors, BBK AFPR, 3/8" no EGR spacer,MAC pro-dumps, FMS 3.73's, and other piddly sht.

06-18-2001, 05:12 PM	#4
grey92lx Registered Member Join Date: Jul 2000 Location: Harlingen, TEXAS Posts: 75	Im using the F303 cam with no problems, I like the cam. Really pulls hard above 3800rpm. ------------------ 92'LX Notchback, BBK Fenderwall Cold Air EDELBROCK Per. Intake, C&L 73mm MAM, 70mm TB, FMS 24 lb injectors, Race Crank Pulley,Windsor Jr iron Heads port & polished, f303 cam, 1.6 Crane roller rockers MSD 6A, FMS 9mm wires, Underdrive pulleys, JBA headers, flowtech X, 2 ch. flow, 3.73, Pro 5.0 Shifter HD FMS Radiator, Energy Suspension Tranny Mount, Max Motorsport subs, Max Motorsport Lower Control Arms, ...KN 12.91@105mph 60ft 1.72 w/ET Drags