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Old 02-12-2016, 10:19 PM   #1
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El Cajon pass

Going on 1st long trip this summer. Not too many concerns but one I have is going thru cajon pass from las vegas to San Bernardino. Long stretch downhill Whose done it and is it a big deal.
It is a 12 mile 6% downgrade.
RAM 2500 6.4 HEMI pulling a 29ft tt.
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Old 02-12-2016, 10:54 PM   #2
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Been over it several times, no, it's not a big deal. But I've had either an exhaust brake or now an engine brake.
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Old 02-12-2016, 11:17 PM   #3
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I've been over that thing more time than I can count. If you made it from Vegas you can do that grade. Just take your time it will be no problem. The other drivers (nut bags) are what you have to watch out for. Maybe wind also.
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Old 02-12-2016, 11:19 PM   #4
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El Cajon is off of I-8 Interstate east of San Diego

Cajon Pass is on I-15 just south of the High Desert (Hesperia/Oak Hill)

From Summit to Cajon Junction (hwy 138) it is a steep downgrade but fairly short (2-2 1/2 miles) then the rest is just a steady downgrade

Thousands of semis, rvs, trucks etc use it daily.
Only real issue is the idiots that going flying by doing 80+ weaving in/out of traffic.
Semis will be over in right 2 lanes--------suppose to be doing 45 MPH

55 mph for vehicle towing so hop in 2nd right hand lane....tow/haul and relax
Should be in good shape.just went thru a major repave project.

Drove it for 10 yrs. daily commute from High Desert to Fontana
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Old 02-14-2016, 08:54 AM   #5
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Limit your braking as much as possible by manually shifting your auto trans to lower gears as needed. It does look intimidating as you start the downgrade.


Like others have said, right 2 lanes and stay alert because of the crazies out there.


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Old 02-14-2016, 09:38 AM   #6
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Just went over both ways towing 9500lb equipment trlr w/6.0l Ford dually--company stuff. Easy trip both ways, no problems except for traffic--as mentioned, lots of idiots and also motorcycles weaving in and out--when one of those MCs revving at 7-9k comes up alongside and you aren't ready for the noise, it can be somewhat unnerving.
There is one section that has the lanes split 3 into 2 going both ways that is a little narrow to be aware of.
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Old 02-17-2016, 11:18 AM   #7
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I had a Ford V10 gasser pulling a 14,000 lb 5ver. I kept it in 2nd and gently applied the trailer brake to keep the speed in check. And, Pay attention!
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Old 02-17-2016, 11:44 AM   #8
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Cajon Pass was a really nice drive 60 years ago.
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Old 02-17-2016, 01:19 PM   #9
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The Grapevine or Shirwin Grade from Mammoth to Bishop is much more of a downhill challenge. It's the traffic on Cajon that makes it fun. 2 lanes of trucks and RV's and 2 lanes of nuts.
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Old 02-17-2016, 08:11 PM   #10
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rskeans,
Did you have to go up Cajon, or just the downhill way? I used to have an '02 V10 that would have been sitting on 4500rpms in 2nd all the way....
Joe
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Old 02-18-2016, 12:13 AM   #11
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This will be my first time going down and then coming back up. At this point more concerned going down.
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Old 02-18-2016, 12:43 AM   #12
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I try to avoid that pass in the MH, but then I'm heading to San Fernando so the 58 works or the Pearblossom Highway. The steep climb and down grade are not really the problem. The climb is ok, the long down grade just means you should really watch your speed, keeping it within a comfortable controllable range. I find the possible crosswinds to be a big concern. As the pass opens in places you can be hit by a sudden gust that can push you out of your lane, or it can push a big rig over or out of the lane. So just travel that area with care, and keep proactive about speed and who is next to you.
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Old 02-18-2016, 12:47 AM   #13
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Quote:
Originally Posted by timetogo View Post
Cajon Pass was a really nice drive 60 years ago.

60 yrs ago it was Route 66 and followed Cajon Creek down along railroad tracks past Mormon Rocks

Still a few areas for boondocking between Cleghorn Rd. and Kenwood and doing a bit of trainspotting
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Old 02-18-2016, 09:40 AM   #14
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Quote:
Originally Posted by wingnut60 View Post
rskeans,
Did you have to go up Cajon, or just the downhill way? I used to have an '02 V10 that would have been sitting on 4500rpms in 2nd all the way....
Joe
I traveled both directions. Going up I had to have it in 2nd and wound up to 4500 or more. I was barely able to keep it around 50-55 mph. Also if I lost momentum for any reason, truck or slow traffic, I probably couldn't recover. It's all distant memories now with my diesel and exhaust brake. I live in the San Bernardino mountains (Running Springs) and very close to the Cajon pass. I never go West toward LA so it's either the I-10 toward Palm Springs/Indio or the I-15/hwy 395 toward Las Vegas or Bishop.
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