Max safe rpm for highway cruising?

hardhitter · April 22nd, 2008, 09:18 PM

At what rpm does cruising become dangerous. For example is it okay on the motor to drive at 4000 rpm for an hour?

zinc02GT · April 22nd, 2008, 09:21 PM

are you staying in 4th gear or somethin? I dont see gears in your sig...

how fast are you cruisin at dude lol? 5th at 4000 would be in the 100s mph prolly around 120 or so...

I wouldnt do it personally. SOunds like a alot of stress on the motor and it also horrible on gas...

v606er · April 22nd, 2008, 09:23 PM

cruising on the highway at 60-80 for me is right around 2k rmp.
there is definatly something wrong if you are doing 4k

pa.ulB · April 22nd, 2008, 09:29 PM

under 2.5k , anything more and your using alot of gas for highway crusing

TheBusher · April 22nd, 2008, 09:33 PM

Probably not dangerous as long as it's not longer then an hour and your car's in good shape. But like Paul said, you would waste a lot of gas for no reason. Maybe I'm just the curious type, but why exactly would you wanna cruise at 4K?

jaxdawg · April 22nd, 2008, 09:34 PM

i have any auto and 3:73 gears and at 70mph its right at about 2400rpm

White99stang · April 22nd, 2008, 09:41 PM

its fine if you want to reduce the life of your engine. Figure someone with those mods would know a little bit about cars.

FOR POINT SIX · April 22nd, 2008, 09:41 PM

I make regular trips to Atlanta and my rpm stays around 3200... But this is with 4.10s...

drazga97 · April 22nd, 2008, 09:43 PM

hes probably talking about riding in 4th gear between 60-100mph (and taking it up to 130ish where it ends) when racing someone because 5th is pretty much useless for racing with the stock gearing

hardhitter · April 22nd, 2008, 09:51 PM

I'm getting 3.73s put in right now and im just thinking because I used to be at almost 2500 rpm cruising before gears so I was just wondering what's safe.

hardhitter · April 22nd, 2008, 09:54 PM

Originally Posted by drazga97

hes probably talking about riding in 4th gear between 60-100mph (and taking it up to 130ish where it ends) when racing someone because 5th is pretty much useless for racing with the stock gearing

My 4th ran out at 100mph before gears.

jivepepper · April 22nd, 2008, 10:04 PM

Originally Posted by hardhitter

My 4th ran out at 100mph before gears.

Really? I have been 130 in fourth with 3.73's

hardhitter · April 22nd, 2008, 10:07 PM

Do we have the same transmission?

drazga97 · April 22nd, 2008, 10:07 PM

yeah my 3rd ends somewhere between 95-100 and 4th takes me up to about 130 135ish

hardhitter · April 22nd, 2008, 10:08 PM

What is your rpm at 80mph?

hardhitter · April 22nd, 2008, 10:08 PM

Oh damn yeah I meant 3rd lol

zinc02GT · April 22nd, 2008, 10:20 PM

Originally Posted by hardhitter

What is your rpm at 80mph?

I have stock gears

3rd gear at 80mph is roughly 5200ish

4th gear about 4000 ish

5th gear about 2000ish

hardhitter · April 22nd, 2008, 10:34 PM

mines 2400 rpm at 80

White99stang · April 22nd, 2008, 10:38 PM

i just want to know why the hell you want to drive at 4k rpms for an hour

zinc02GT · April 22nd, 2008, 10:42 PM

Originally Posted by hardhitter

mines 2400 rpm at 80

well if im not mistkaen the speed limit on an interstate is 65 right? do the speed limit, save gas.

drop in 5th not 4th and save gas. youll see well over 300 miles to a tank by keeping it around 65 mph instead of 80

April 22nd, 2008, 09:18 PM	#1
hardhitter MM Fanatic 1999 Mustang GT Join Date: Nov 2007 Location: Houston, TX Posts: 3,623 iTrader: 1 reviews	Max safe rpm for highway cruising? At what rpm does cruising become dangerous. For example is it okay on the motor to drive at 4000 rpm for an hour? __________________ Vortech V2 Si

April 22nd, 2008, 09:21 PM	#2
zinc02GT HUGE RED HEADED DUDE W/FIVE-OH 2011 Mustang GT 12.1 @ 116 Join Date: Dec 2007 Location: Alabama Posts: 5,846 iTrader: 1 reviews	are you staying in 4th gear or somethin? I dont see gears in your sig... how fast are you cruisin at dude lol? 5th at 4000 would be in the 100s mph prolly around 120 or so... I wouldnt do it personally. SOunds like a alot of stress on the motor and it also horrible on gas... __________________ Mods in garage. Built suspension and gears since posted times.

April 22nd, 2008, 09:29 PM	#4
pa.ulB Regular 2004 GT slow.... Join Date: Nov 2006 Location: PA Posts: 415 iTrader: 0 reviews	under 2.5k , anything more and your using alot of gas for highway crusing __________________ 2004 Crimson red GT saleen s/c, full bolt ons

April 22nd, 2008, 09:34 PM	#6
jaxdawg Regular 2004 mustang GT Join Date: Feb 2008 Location: Jacksonville FL. Posts: 189 iTrader: 0 reviews	i have any auto and 3:73 gears and at 70mph its right at about 2400rpm __________________ flowmasters, no cats, 3.73's, sct xcal2, eibach pro kit, CC plates, 75mm TB, plenum, T56 Cobra manual transmission,and last but not least a procharger P1SC. 400hp and 376ft-lbs

April 22nd, 2008, 09:41 PM	#7
White99stang MM's nicest mod, :) Join Date: Aug 2005 Location: Apex, NC Posts: 3,771 iTrader: 0 reviews	its fine if you want to reduce the life of your engine. Figure someone with those mods would know a little bit about cars. __________________ 06 Dodge MegaCab Diesel 455rwhp/815rwtq REAL TRUCKS DON'T USE SPARK PLUGS

April 22nd, 2008, 09:41 PM	#8
FOR POINT SIX Enthusiast Join Date: Aug 2006 Location: Nashville TN Posts: 679 iTrader: 0 reviews	I make regular trips to Atlanta and my rpm stays around 3200... But this is with 4.10s... __________________ http://www.myspace.com/forpointsix My Garage

April 22nd, 2008, 09:43 PM	#9
drazga97 Noob Slayer 2004 Mustang GT 13.82 @ 101.09 Join Date: Oct 2007 Location: New Jersey Posts: 2,458 iTrader: 1 reviews	hes probably talking about riding in 4th gear between 60-100mph (and taking it up to 130ish where it ends) when racing someone because 5th is pretty much useless for racing with the stock gearing __________________ 2003 Black Cobra 10th Anniversary 2.8 Kenne Bell Mammoth LC - Built SRA - T56 - E85 - Spray - Stock Longblock - True Forged Mach 5s 2004 Silver GT 5 speed - SOLD MM Cobra Club Member# 97

April 22nd, 2008, 09:51 PM	#10
hardhitter MM Fanatic 1999 Mustang GT Join Date: Nov 2007 Location: Houston, TX Posts: 3,623 iTrader: 1 reviews	I'm getting 3.73s put in right now and im just thinking because I used to be at almost 2500 rpm cruising before gears so I was just wondering what's safe. __________________ Vortech V2 Si

April 22nd, 2008, 10:07 PM	#13
hardhitter MM Fanatic 1999 Mustang GT Join Date: Nov 2007 Location: Houston, TX Posts: 3,623 iTrader: 1 reviews	Do we have the same transmission? __________________ Vortech V2 Si

April 22nd, 2008, 10:08 PM	#15
hardhitter MM Fanatic 1999 Mustang GT Join Date: Nov 2007 Location: Houston, TX Posts: 3,623 iTrader: 1 reviews	What is your rpm at 80mph? __________________ Vortech V2 Si

April 22nd, 2008, 10:08 PM	#16
hardhitter MM Fanatic 1999 Mustang GT Join Date: Nov 2007 Location: Houston, TX Posts: 3,623 iTrader: 1 reviews	Oh damn yeah I meant 3rd lol __________________ Vortech V2 Si

April 22nd, 2008, 10:34 PM	#18
hardhitter MM Fanatic 1999 Mustang GT Join Date: Nov 2007 Location: Houston, TX Posts: 3,623 iTrader: 1 reviews	mines 2400 rpm at 80 __________________ Vortech V2 Si

April 22nd, 2008, 10:38 PM	#19
White99stang MM's nicest mod, :) Join Date: Aug 2005 Location: Apex, NC Posts: 3,771 iTrader: 0 reviews	i just want to know why the hell you want to drive at 4k rpms for an hour __________________ 06 Dodge MegaCab Diesel 455rwhp/815rwtq REAL TRUCKS DON'T USE SPARK PLUGS

Remove Advertisements Sponsored Links
Ford Mustang Forum Advertisement

Threads Similar to: Max safe rpm for highway cruising?
Thread	Thread Starter	Forum	Replies	Last Post
Cruising up to Salem, OH	gills99stang	Midwest	0	May 21st, 2007 06:00 PM
Maryland Cruising weather update	ZOOTOXIN	The Clubhouse	1	April 20th, 2007 11:04 AM
Turbo 5.0 sn95 and Supra cruising	Cricket	Videos	6	March 2nd, 2007 09:09 AM
Anyone know of any cruising going on in Silverdale, WA?	ocsailor86	96-98	5	January 31st, 2007 01:11 AM

All times are GMT -4. The time now is 02:41 PM.
Contact Us - Modded Mustangs : Ford Mustang Forums - Privacy Statement - Top
Modded Mustangs is ©2005-2008, All Rights Reserved, And is Not Affiliated with Ford Motor Company. Forum is powered by vBulletin ©2000 - 2012, Jelsoft Ent. Ltd. & SEO by vBSEO 3.3.2 ©2009, Crawlability, Inc.