V10 safe RPM range
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Trailering
Joined: Sep 2004
Posts: 17
Likes: 4
From: Mulvane, Kansas
V10 safe RPM range
I converted a 27 foot 2005 E450 shuttle bus into a camper. I purchased it with 22,000 miles on it and have taken it on some long trips and shorter trips. It runs like a dream and now has 27,000 miles on it. We were very weight conscious on our build and I believe we are close to original weight. It gets up to speed fast and does not seem to be laboring.
when I am in the Texas Hill country or Missouri hills with the cruise on 65 it runs 3500 RPMs when it down shifts, 4000 if I’m going 70ish. For an old school big block that is a lot of RPMs for sustained driving but this is not a 460.
We flat tow a Geo Tracker most of the time but doesn’t seem to make a difference. The only real complaint I see on these motors is MPG. I would love some input from other V10 owners about running 3500-4000 rpm’s in the hills. We have not taken our CO trip for two years and wonder if this rig will do ok on real mountain roads.
when I am in the Texas Hill country or Missouri hills with the cruise on 65 it runs 3500 RPMs when it down shifts, 4000 if I’m going 70ish. For an old school big block that is a lot of RPMs for sustained driving but this is not a 460.
We flat tow a Geo Tracker most of the time but doesn’t seem to make a difference. The only real complaint I see on these motors is MPG. I would love some input from other V10 owners about running 3500-4000 rpm’s in the hills. We have not taken our CO trip for two years and wonder if this rig will do ok on real mountain roads.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,712
Likes: 2,631
From: SE Florida
The safe RPM range is any RPM that the engine will run. If it reaches an unsafe RPM, the PCM will either turn off the fuel (via the RPM limiter) or force the transmission to upshift.
SPONSOR
Joined: Jan 2025
Posts: 496
Likes: 302
From: White Bear Lake
Ford mod motors absolutely love to rev. All their power and torque is very high up the rev range. Peak torque on the 2v V10 is above 3000 rpm and peak HP is over 4000., so between 3000 and 4500 is where they love to be. Your not going to hurt it unless you let it get hot, run low on oil or don't maintain it well.
-Dan F
-Dan F
Tuned
Joined: Mar 2022
Posts: 304
Likes: 192
From: Northern California
Running 3500-4000rpm in the hills is where this motor shines. Anything over 4000 rpm (although the engine could handle it) I'm usually backing out of it / disabling cruise control and scrubbing a few mph to stay in 3500-4000rpm range. Pretty sure your rig came with 4.56 gears which equates to higher rpm's, but good for the transmission and towing
Are you running in tow/haul mode? What rpms's are you running on flat sections?
Are you running in tow/haul mode? What rpms's are you running on flat sections?
Thread Starter
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Trailering
Joined: Sep 2004
Posts: 17
Likes: 4
From: Mulvane, Kansas
Thanks for the responses! Gives me a little peace of mind. Unless it is really hilly it sets at 2600 RPM at 65 mph. Coming over the bridge to the Island today from Corpus Christi it hit close to 5000 before I killed the cruise. At 63 my mind may have some slippage. I thought I remembered my old 1991 454 hit peak torque at 3600?
I love this set up! I may be a little paranoid as our last rig, high top ProMaster 2500 went through two motors and 3 transmissions in less than two years. RAM claimed they were getting bad rebuilds from the distributor. Spent 5 months in the shop between two different shops. They stood behind the warranty but I got this bus as the replacement. It has been so reliable it makes me nervous! Hope to get 5 years out of it and not replace a motor or tranny.
I love this set up! I may be a little paranoid as our last rig, high top ProMaster 2500 went through two motors and 3 transmissions in less than two years. RAM claimed they were getting bad rebuilds from the distributor. Spent 5 months in the shop between two different shops. They stood behind the warranty but I got this bus as the replacement. It has been so reliable it makes me nervous! Hope to get 5 years out of it and not replace a motor or tranny.
Moderator
Joined: May 2004
Posts: 6,510
Likes: 904
From: Home Base Nebraska
I little advice when in the hills or anywhere there is a grade and that is not not use the cruise control because they are way to aggressive. When approaching a grade slowly give it more gas until it downshifts and climb the hill at a reasonable rpm not 5K of you want your running gear to last. Yes it will run at 5K but for how long.
Denny
Denny
FTE Community Team
Joined: Jan 2019
Posts: 10,719
Likes: 1,495
Thanks for the responses! Gives me a little peace of mind. Unless it is really hilly it sets at 2600 RPM at 65 mph. Coming over the bridge to the Island today from Corpus Christi it hit close to 5000 before I killed the cruise. At 63 my mind may have some slippage. I thought I remembered my old 1991 454 hit peak torque at 3600?
I love this set up! I may be a little paranoid as our last rig, high top ProMaster 2500 went through two motors and 3 transmissions in less than two years. RAM claimed they were getting bad rebuilds from the distributor. Spent 5 months in the shop between two different shops. They stood behind the warranty but I got this bus as the replacement. It has been so reliable it makes me nervous! Hope to get 5 years out of it and not replace a motor or tranny.
I love this set up! I may be a little paranoid as our last rig, high top ProMaster 2500 went through two motors and 3 transmissions in less than two years. RAM claimed they were getting bad rebuilds from the distributor. Spent 5 months in the shop between two different shops. They stood behind the warranty but I got this bus as the replacement. It has been so reliable it makes me nervous! Hope to get 5 years out of it and not replace a motor or tranny.
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