Mopar cam for rebuilt 4.0?

GASnBRASS

TJ Enthusiast
Original poster
Joined
Apr 6, 2017
Messages
688
Location
Minnesota
I'm doing a rebuild of my 4.0 and need a new cam. Factory cams are no longer available but I'd like to stick with a wider cam lobe for durability. Mopar offers two cams P4529228 and P4529229 and I need to know which would give me a smooth idle but also good torque range up to 3500 rpm, with cruising rpms of 2500-3000 rpm.

Specs-————————————————————--Stock 96-'04 / P4529228 / P4529229
Advertised Intake Duration-———————————— / 253 / 240 / 248
Advertised Exhaust Duration-——————————— / 259 / 240 / 248
Intake Duration @ .050" Lift ———————————-/ 188 / 199 / 202
Exhaust Duration @ .050" Lift ——————————-/ 190 / 199 / 202
Valve Lift (Intake) —————————————————/ 0.408 / 0.430 / 0.440
Valve Lift (Exhaust) ————————————————/ 0.414 / 0.430 / 0.440
Intake Opens @ .050" Lifter Rise (BTDC) deg ——/ -16 / -8.5 / -7
Intake Closes @ .050" Lifter Rise (ABDC) deg ——/ 24 / 27.5 / 29
Exhaust Opens @ .050" Lifter Rise (BBDC) deg —-/ 20 / 27.5 / 29
Exhaust Closes @ .050" Lifter Rise (ATDC) deg —-/ -10 / -8.5 / -7
Advertised Intake Opens (BTDC) deg ———————/ 12.4 / 12 / 16
Advertised Intake Closes (ABDC) deg ———————/ 60.9 / 48 / 52
Advertised Exhaust Opens (BBDC) deg ——————/ 49.8 / 48 / 52
Advertised Exhaust Closes (ATDC) deg —————- / 29.2 / 12 / 16
Valve Overlap deg (advertised) ——————————/ 41.6 / 24 / 32
Lobe Separation Angle deg ———————————- / 107.5 / 108 / 108
Intake Centerline Angle deg ———————————-/ 110 / 108 / 108