Notpretty
Member
- Joined
- May 16, 2012
- Messages
- 11
- Reaction score
- 0
- City, State
- Sacramento CA
- Year, Model & Trim Level
- 1971 Bronco W/98 EXP 5.0
New to the forum...Hi all...
I have:
1998 Explorer 5.0
AFR Heads with Intake port matched to it
Cam swap Comp Cams
Basic Operating RPM Range 1,200-5,200
Intake Duration at 050 inch Lift 210
Exhaust Duration at 050 inch Lift 215
Duration at 050 inch Lift 210 int./215 exh.
Advertised Intake Duration 266
Advertised Exhaust Duration 270
Advertised Duration 266 int./270 exh.
Intake Valve Lift with Factory Rocker Arm Ratio 0.533 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.533 in.
Valve Lift with Factory Rocker Arm Ratio 0.533 int./0.533 exh.
Lobe Separation (degrees) 114
Computer-Controlled Compatible Yes
Headers...just 1 5/8" primaries but free flowing no cat
Using a Moates Quarterhorse to tune it
Roller Rockers...pedestal mount.
I have 30# injectors, but don't know if I need them
Thinking of Turbo in future, but not yet. Don't ask why...snow wheeling thing.
Everything else is basically stock...bottom end is bone stock so compression is supposed to be 9:1ish with these heads
The air intake will be larger with a larger MAF sensor, but still have the stock explorer throttle body.
The main question: Do you think I'll get over the 300 HP mark where I need to start thinking about larger injectors? If so, will my 30# injectors be fine and will the stock fuel pump cause a potential lean condition...or is it going to be fine?
I'm a rock crawler and this motor is in a 1971 Early Bronco with more drivetrain toys than one could imagine...40K+. I am learning this EFI performance thing on the fly so don't assume I know what I'm doing. The cam is a compromise between torqure and increased lift/duration.
Thanks for any feedback
I have:
1998 Explorer 5.0
AFR Heads with Intake port matched to it
Cam swap Comp Cams
Basic Operating RPM Range 1,200-5,200
Intake Duration at 050 inch Lift 210
Exhaust Duration at 050 inch Lift 215
Duration at 050 inch Lift 210 int./215 exh.
Advertised Intake Duration 266
Advertised Exhaust Duration 270
Advertised Duration 266 int./270 exh.
Intake Valve Lift with Factory Rocker Arm Ratio 0.533 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.533 in.
Valve Lift with Factory Rocker Arm Ratio 0.533 int./0.533 exh.
Lobe Separation (degrees) 114
Computer-Controlled Compatible Yes
Headers...just 1 5/8" primaries but free flowing no cat
Using a Moates Quarterhorse to tune it
Roller Rockers...pedestal mount.
I have 30# injectors, but don't know if I need them
Thinking of Turbo in future, but not yet. Don't ask why...snow wheeling thing.
Everything else is basically stock...bottom end is bone stock so compression is supposed to be 9:1ish with these heads
The air intake will be larger with a larger MAF sensor, but still have the stock explorer throttle body.
The main question: Do you think I'll get over the 300 HP mark where I need to start thinking about larger injectors? If so, will my 30# injectors be fine and will the stock fuel pump cause a potential lean condition...or is it going to be fine?
I'm a rock crawler and this motor is in a 1971 Early Bronco with more drivetrain toys than one could imagine...40K+. I am learning this EFI performance thing on the fly so don't assume I know what I'm doing. The cam is a compromise between torqure and increased lift/duration.
Thanks for any feedback