What is a normal EGT reading while doing 70 MPH?

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Apr 29, 2008 | 08:01 AM

#16

Pocket

Post Fiend

Joined: Jun 2004

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From: Parker, CO

Quote:

No chip, no mods and at about 2k rpm I'm at 350-400 degrees on flat road.

Your probe is in the downpipe, isn't it......

Apr 29, 2008 | 08:42 AM

#17

UP_There

Lead Driver

Joined: May 2007

Posts: 5,613

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From: Flagstaff, Arizona

I was thinking the same thing Curtis......an EGT probe in the downpipe is on average 200-300 degrees lower temps, sorta mis-leading if you are reading typical EGT posts on here.

Apr 29, 2008 | 08:43 AM

#18

mueckster

Lead Driver

Joined: Jun 2003

Posts: 8,298

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From: Damon (South East Texas)

Quote:

Originally Posted by strokin_it7.3

Yep i run around that, sometimes 900+.

I only see that kind of EGTs pulling my fifth wheel at 65 mph. Uusually under 700* empty @ 70 mph.

Apr 29, 2008 | 08:49 AM

#19

RedBoat

Rather Be Floatin

Joined: Oct 2005

Posts: 2,468

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From: Marble Falls, Tx.

I'm turning around 2100 rpm's at 70mph (70 on gps- speedometer says 73-74) and my egt's are around 600-650 degrees, at about 5 psi of boost.

Apr 29, 2008 | 09:05 AM

#20

GEugeneS

Laughing Gas

Joined: Mar 2004

Posts: 789

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From: West Coast/L.A. Area

I run in 700 to 800 with an Edge Evo on setting 1

Apr 29, 2008 | 09:12 AM

#21

papadelogan

Snowboard season cometh..

Joined: Jan 2006

Posts: 5,406

Likes: 1

From: Gulf Coast of Florida

Quote:

Originally Posted by Pocket

If it's completely flat ground and no wind (almost impossible around here), I'm turning around 2100 rpm's, hover around 600-650 degrees, and about 5 psi of boost.

But since it's Colorado, around Denver my EGT's range from 450-900 degrees while crusing a steady speed at 70 mph, boost between 3-12 psi. Up in the mountains on I-70, EGT's cruising at 70 range from 300-1000 degrees, and boost between 3-20 psi. That's just maintaining a steady speed. Got altitude?

I'm in the same boat as POCKET, since I live less than 20miles from Parker, CO.

What gears do you have? 2100RPMs @ 70MPH with 36" tires? I've got 3.73s with ~33" tires (255/85R16 Big O XTs) and figuring in the correction factor I'm right about 1950RPMs for an actual 70MPH. With 36's I'd think you be lower, unless you're running 4.10s or deeper?

P.S. - Gary (GEugeneS) that is one SWEET RIG!!! I'm actually looking at buying a 99 Dually in white right now..... must.... resist....can't afford double-PMS!!!

Apr 29, 2008 | 09:19 AM

#22

Pocket

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Joined: Jun 2004

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From: Parker, CO

Quote:

What gears do you have? 2100RPMs @ 70MPH with 36" tires? I've got 3.73s with ~33" tires (255/85R16 Big O XTs) and figuring in the correction factor I'm right about 1950RPMs for an actual 70MPH. With 36's I'd think you be lower, unless you're running 4.10s or deeper?

I'm running 4.30's in mine.

Apr 29, 2008 | 09:20 AM

#23

Izzy351

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Joined: Feb 2007

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From: Dallas-Ft. Worth

I run anywhere from 400-700 depending on outside temps, and whether or not I'm going up a hill. It's mostly flat around here though. On interstates in the summer, I'm right around 550-600 on flat stretches. In the winter, probably around 450-500, unless it's really cold out -- that's when I see low 400s. It climbs up depending on the length of the overpass/hill but those are average numbers for me here in North Texas. My probe is in the up-pipe.

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May 4, 2008 | 02:22 AM

#24

eodmule

Senior User

Joined: Apr 2005

Posts: 122

Likes: 2

From: Spokane, WA

Quote:

Originally Posted by Pocket

Your probe is in the downpipe, isn't it......

You know, I haven't looked. The previous owner installed it so I guess I'll have to check it tomorrow. I thought it was a few inches back from the EBPV.

May 4, 2008 | 02:31 AM

#25

weekendwarriorfsw32

Master of Strokes

Joined: Mar 2007

Posts: 6,808

Likes: 25

From: CA

About 500-550 here and 4 psi of boost!

May 6, 2008 | 09:35 AM

#26

GEugeneS

Laughing Gas

Joined: Mar 2004

Posts: 789

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From: West Coast/L.A. Area

Quote:

Originally Posted by papadelogan

P.S. - Gary (GEugeneS) that is one SWEET RIG!!! I'm actually looking at buying a 99 Dually in white right now..... must.... resist....can't afford double-PMS!!!

Brendan, Thanks for the compliment. I always liked the duallies. I still have my '91 F350 gasser and pulled my trailer with that for years. Building a 550 ci stroker for it and it needs to be repainted, but I'll get it done someday. No $ now.

Also when I bring the '02 back down to between 60 and 65 I run between 600 and 700 on the flats.

Last edited by GEugeneS; May 6, 2008 at 09:35 AM. Reason: spelling