Jeep Strokers

Heya!

So I built my first engine (stroker) and tried to maintain the clearwater head without doing any modifications.. I though i could get away with it with a custom cam profile that was published a while back for the later model coil rail ignition models. Well turns out I have valve float at around 4200 RPM (live at 5500 feet elevation). I just bit the bullet and bought the edelbrock aluminum head bc i don't want to modify the clearwater head nor do i have time to source an older one to get work done etc.

Basics are

97 HO Block bored .030 over and .010 off the deck.
Cleggs stage 2 bottom end
Harland sharp roller rockers
Edelbrock Aluminum head
Banks torque tubes (for 00/01)

Waiting to hear back from comp for what they recommend but interested what yall think for the 01 ignition/elevation or if i'm worrying too much about it? Thanks!

Comp's "Rock Crawler" series has a reduced duration, reduced overlap, and higher lift (still within stock valve spring specs). This is good for better cylinder filling at low throttle angles. For a driver, this should make things better for you. BTW, I'm running one in my 4.6 stroker and am 100% satisfied with it.

Sweet! Which one are you running? Comp recommended the below one as it was developed for the head. I plugged the numbers into an overlap calculator (bc i have no clue) and it says it's 28*. I've read that it was the overlap that seemed to be the issue that didn't play nice with the ECU/Coil pack. is 28* a low overlap? The comp dude is not very forthcoming regarding my questions regarding the ignition stuff. Thanks!

https://www.compcams.com/xtreme-4x4-205 ... 8-cpg.html

The the Comp Cams part number is CL68-232-4. Here are the specs for it:
- Cam Intake Duration: 250 Degrees (vs 270 stock)
- Cam Exhaust Duration: 256 Degrees (vs vs 270 stock)
- Cam Intake Lift: 0.460" (vs 0.405" stock)
- Cam Exhaust Lift: 0.476" (vs 0.405" stock)
- Cam Intake Centerline: 110 ATDC (vs 135 ATDC stock0
- Lobe Separation: 113 Degrees (no stock numbers in my notes)
- Cam Overlap: 26 Degrees (vs 46 Degrees stock)

Some background on my build:
- 1996 block (first year for the bottom-end girdle, and head-locating dowels)
- 2004 head, heavily ported (for fuel economy & torque, not high-RPM HP); (sports smaller exhaust ports which is better for low RPM grunt & MPG)
- Cleggs New Stroker crank with 10.7:1 pistons (with the head work, it's 10.2:1)
- Measured static compression ratio: 10.2:1 (already mentioned??)
- ARP Head Bolts PN ARP 146-3601 (didn't feel the need for head studs with this low RPM low performance build)
- Cloys Adj Timing Chain Set PN 9-3127 (set straight up as per cam specs)
- Clevite MLS Head Gasket PN 695-54249

My goal for my 4.6 stroker build was 500k miles endurance, incredible off-throttle torque, tow with ease, and increased MPG. So far I'm happy with my build. I'm at a lower elevation than you (Oklahoma), but being able to draw in what air is available at normal throttle angles is a concept that applies to sea level or Vale Pass (high point in Colorado).

If you want to see much more detail about my engine build, I created an engine build thread here: https://www.jeepforum.com/threads/high- ... 2/#replies

The vehicle build thread that includes the stand-alone ECU and many many other mods is here: https://www.jeepforum.com/threads/time- ... n.4480984/

I hope there is something here that might help you with your project.