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11-12-2012, 04:17 PM | #1 |
Charlie Daniels w/ a Tq Wrench
Join Date: May 2009
Location: Statesville, NC
Posts: 1,570
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Re: How fast does everyone cruise on the highway in their truck?
Well let's see, that should do it:
(disclaimer, speedo was bouncing, It was actually about 90mph) LOL But seriously, I usually just keep up with traffic, 65-75 depending on traffic flow. I think my 78 with sm465, no overdrive, 4.11 rear, and 35" tires does about 2800 rpm at 70mph. On a recent trip, about 1.5hrs up unloaded at about 70mph, and 1.5hrs home loaded down with a K5 Blazer on the trailer about 60mph, I averaged just over 10mpg, hand calculated.
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ΜΟΛΩΝ ΛΑΒΕ 67 C10 Shortbed "Great Grandpa's Truck" I6 3 on the Tree 71k original miles 5.3 swap in the works69 K5 Blazer-Family Beach Cruiser Project 78 K30 Dually Semi-Retired Fire Truck 350/SM465 35"s SOLD01 2500HD ECSB 6.0 4x4 5.13's 8" lift 38"s |
11-12-2012, 09:24 PM | #2 |
78 Big10 454
Join Date: Jul 2008
Location: Pismo Beach, CA
Posts: 839
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Re: How fast does everyone cruise on the highway in their truck?
I do the posted speed limit and stay in the far right-hand lane. My MPG never varies, so that's not an issue. I am allergic to red lights in my rearview mirror, especially when they are attached to a CHP vehicle.
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1978 Chevy SWB C-10 2WD 454/400 |
11-12-2012, 09:27 PM | #3 |
Registered User
Join Date: Aug 2012
Location: Virginia Beach, VA
Posts: 131
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Re: How fast does everyone cruise on the highway in their truck?
60-65 mph in my '87 Stepside with stock ride height, v6 and 700r4 just feels right.
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11-12-2012, 10:29 PM | #4 |
Watch out for your cornhole !
Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
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Re: How fast does everyone cruise on the highway in their truck?
If I get a ticket for speeding, I lose my job, so it's the speed limit for me every time.
But, my truck has a big block, no overdrive, and 4.56 gears so I don't really ever have a problem with my speed creeping up too high anyway. |
11-13-2012, 02:54 PM | #5 |
Registered User
Join Date: Oct 2012
Location: MI
Posts: 58
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Re: How fast does everyone cruise on the highway in their truck?
My '81 scotts has a .030 over 350. Not sure of the gear. it runs 70 like a boss. I actually had the spark advanced a little too far and it liked 70-85 a lot! I need to adjust the vacuum cruise control because it does not hold above 67mph.
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11-13-2012, 08:37 PM | #6 |
Registered User
Join Date: Aug 2009
Location: Oregon
Posts: 611
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Re: How fast does everyone cruise on the highway in their truck?
I usually stay close to 55...though I don't do much highway/freeway driving. Something starts vibrating really bad at about 60...haven't figured out what yet.
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'73 K20 Cheyenne Super Camper Special 350/TH350/NP205 sittin' on 33's. You can set my truck on fire and roll it down a hill, and I still wouldn't trade it for a Coupe de Ville. |
11-12-2012, 10:43 PM | #7 |
Chevy Enthusiast
Join Date: Jul 2009
Location: Canyon Lake Texas
Posts: 2,024
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Re: How fast does everyone cruise on the highway in their truck?
I went to Austin and back last weekend and nobody drives under 75 on I35. Most of the trip I was at 85 with a few times past 100, my 454, 4 speed, 4:10 gears and 245/75-16's. Usually I get anywhere from 7-9mpg around town but on the highway I got 10mpg. If I did the same thing and stayed at 75 it probably would have gotten 12. I was not easy on it at all, and I know this is not safe driving habits in a 34yo truck. I'll get a picture next time.
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Tony 1985 GMC K2500 restoration Project: Rust, White & Blue 1989 Chevy R3500 CC Cummins & 4X4 swap some day... 1989 Burb (D60, 14BFF, 12V, NV4500, NP205, 37" tires in progress) |
11-13-2012, 02:21 PM | #8 | |
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Join Date: Oct 2009
Location: Prescott, Arizona
Posts: 2,396
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Re: How fast does everyone cruise on the highway in their truck?
Quote:
When I tow my 28 foot trailer loaded (about 10,000 lbs.) I cruise about 60 mph and going accross country I averaged 9-10 mpg highway. I know what you mean though, most people here drive over the 75 mph speed limit so you have to keep your eyes peeled when cruising along at 65 or get run over. Seems everyone is in a hurry these days. Most times I take back roads if at all possible because of that and prefer a nice relaxed leasurly cruise. |
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11-14-2012, 09:34 PM | #9 |
Registered User
Join Date: Feb 2012
Location: Big Valley. Alberta
Posts: 674
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Re: How fast does everyone cruise on the highway in their truck?
I am one of the slower guys on the road,my 86 350/465/208 with 4:10 diffs on 35's not really set up for high speed cruising.It probably averages about 10-12 mpg at 100km. My 82. 6.2/A833/208 with 3.73 on 35s does pretty good around 17-19 mpg at 100km. I usually like to sit back and enjoy the ride.I used to drive semi across north america and the company I worked for had a 65mph speed limit and even 15 years later it's still built into my foot!!!! Like I told a fella on the highway once,if your in that much of a hurry,get your a$$ outta bed an hour earlier !!!!!
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1977 Chev C30 454/465/14ff DRW 1974 Chev C20.350/465/14ff " Rock n Roll ain't noise pollution" |
11-14-2012, 09:54 PM | #10 | |
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Join Date: Mar 2012
Location: Little Rock, Arkansas
Posts: 770
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Re: How fast does everyone cruise on the highway in their truck?
Quote:
Posted via Mobile Device
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1979 Sierra Classic Heavy-half 1996 Silverado x-cab "the daily" |
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11-15-2012, 11:12 AM | #11 | |
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Join Date: Oct 2009
Location: Prescott, Arizona
Posts: 2,396
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Re: How fast does everyone cruise on the highway in their truck?
Quote:
I sometimes drive cars with either 4.56 or 4.88 gears and no overdrives, even 55 mph is screaming with a 28" tire. That's even too slow on some of the backroads for people around here They are either socker moms or just too young to know why I'm driving the speed I am. You would have had to own a classic car to understand. Sad that alot of society today missed out on that. |
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11-12-2012, 10:50 PM | #12 |
Registered User
Join Date: Mar 2012
Location: edgartown mass
Posts: 852
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Re: How fast does everyone cruise on the highway in their truck?
i do well at 70 in my c20 with 3.42 and a sm 465 gets me 20-22 depending on grade of fuel. if i go to 75 its 16ish 80 14mpg 85 10mpg
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1986 c20 "the hillbilly" 350 sm465 3.42gears 21mpg at 70mph 1985 k30 "the ice cream truck from hell" no rust az truck 197-8??? c30 "ramp truck" 454 1978 monte carlo 350 350th with 2.73 gears. no rust. sc car |
11-13-2012, 01:46 AM | #13 |
Registered User
Join Date: Feb 2012
Location: Camas WA
Posts: 175
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Re: How fast does everyone cruise on the highway in their truck?
I drove my 79 350/350 turbo 2/2,5 hours to Olympia Washington a couple months ago at 70/75 most of the way and she ran great the whole way there and back. No idea how many miles the motor has or how many mpg I get. And frankly I dont give a dam lol. When Im in my truck its for fun and I dont care the mpg or the cost to fill it. Thats not why I have it.
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1979 SWB 350/350 |
11-13-2012, 09:08 AM | #14 |
Registered User
Join Date: Mar 2012
Location: Woodbury, Ct.
Posts: 1,700
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Re: How fast does everyone cruise on the highway in their truck?
Is that why it feels like the front wheels are coming off the ground at about 85mph??
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11-13-2012, 09:53 AM | #15 |
78K & 79C Jimmys
Join Date: Nov 2009
Location: Ottawa Ont CANADA
Posts: 7,901
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Re: How fast does everyone cruise on the highway in their truck?
79 4X2 has 305-2B@3.4 rear ,quite a change this summer from the 78 $X$
here most speeds top out at 80-100 (50-60)on the highway over in Quebec tho 90-120+ (55-75) ,keeping up...no prob, gas mileage drops like a brick lol
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John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350 |
11-13-2012, 08:41 PM | #16 |
Registered User
Join Date: Mar 2012
Location: Little Rock, Arkansas
Posts: 770
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Re: How fast does everyone cruise on the highway in their truck?
55-60, 357/th350 with 3.40 gears, past 60 I can't look at the fuel gauge.
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1979 Sierra Classic Heavy-half 1996 Silverado x-cab "the daily" |
11-13-2012, 11:36 PM | #17 |
Registered User
Join Date: Nov 2012
Location: spokane washington
Posts: 6
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Re: How fast does everyone cruise on the highway in their truck?
60-75 w/3:73 runs great
78 3/4 ton 2wd 4 speed 350
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78' c20 longbox 350/4-speed-current truck 1976 k20 400/t350 ~sold 1980 k20 350/4-speed ~sold~ missed dearly! |
11-13-2012, 11:38 PM | #18 |
Big Gulps Huh? Whelp...
Join Date: Apr 2010
Location: Reno, NV
Posts: 410
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Re: How fast does everyone cruise on the highway in their truck?
I cruise at 65 all the time on the highway. With the converter locked in Overdrive, it lopes along a 1900rpm turning 35's with 4.10 gears and averages 14mpg all highway driving...I average just shy of 11mpg average overall. Not bad for a 454TBI crew cab!
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"The Ghost II" - 1987 V30 CC, 14-BFF (2nd Design Heavy Ribbed HD) SRW Conversion, 454/4L80E/205, 6" Springs, 35" Toyo MT's on 17" Classic II's, Full Audio System, Lot of Other Goodies!
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11-14-2012, 12:44 AM | #19 |
Registered User
Join Date: May 2011
Location: Goliad, TX
Posts: 672
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Re: How fast does everyone cruise on the highway in their truck?
With the price of fuel these days, I keep my speed at 57 mph on my Suburban and get high 20's.
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1990 ¾ ton 4x4 Chevy Suburban -Cummins Diesel - 12 valve - factory rebuilt -6 speed bullet proof manual transmission - NV5600 -Gear Vendors Overdrive - HX35 Holset Turbo -NP205 iron transfer case -3.73 gears -2" Lift |
11-14-2012, 06:55 PM | #20 | |
Registered User
Join Date: Oct 2009
Location: Prescott, Arizona
Posts: 2,396
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Re: How fast does everyone cruise on the highway in their truck?
Quote:
Doesn't seem to affect anyone around here though, they all still drive like their a$$ is on fire. |
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11-14-2012, 08:10 AM | #21 |
Registered User
Join Date: Sep 2012
Location: TX
Posts: 1,014
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Re: How fast does everyone cruise on the highway in their truck?
Yeah areodynamics play a HUGE roll in how much mileage a vehicle gets. Notice how nowadays, even the seams between the door panels and the fenders and the hoods are all getting tighter on the brand new cars? Smaller seam = less drag. And these trucks are like a brick sailing through the wind. They never even considered areodynamics for these things. Would have been pointless anyway. Better that way though cause they look a lot better for it. Notice all the huge headlights and and frontends on the new trucks just sort of blend together in one big blob. Better gas mileage that way.
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11-15-2012, 09:20 PM | #22 |
Registered User
Join Date: Aug 2009
Location: Oregon
Posts: 611
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Re: How fast does everyone cruise on the highway in their truck?
Actually, I remember looking at a brochure from 1972(?) advertising the "new aerodynamic design".
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'73 K20 Cheyenne Super Camper Special 350/TH350/NP205 sittin' on 33's. You can set my truck on fire and roll it down a hill, and I still wouldn't trade it for a Coupe de Ville. |
11-15-2012, 09:46 PM | #23 |
Registered User
Join Date: Oct 2009
Location: Prescott, Arizona
Posts: 2,396
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Re: How fast does everyone cruise on the highway in their truck?
Yeah, the flat front design idea was used in nascar in the 60's and considered better than what they had previously. Dodge experimented with it on the Charger 500 front ends in 69 with coronet body parts, then sold more than 500 of them to homologate it. It's the same car the nose cones and wings went on which was also homologated and used until Nascar outlawed them, and the rest is history.
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11-14-2012, 06:57 PM | #24 |
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Join Date: Sep 2012
Location: TX
Posts: 1,014
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Re: How fast does everyone cruise on the highway in their truck?
Not me. I do want to do 65/70 though and get somewhere fast. Hell even 70 you get bigrigs passing you.
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11-14-2012, 07:08 PM | #25 | |
Registered User
Join Date: Oct 2009
Location: Prescott, Arizona
Posts: 2,396
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Re: How fast does everyone cruise on the highway in their truck?
Quote:
Doesn't bother me though, I go 65ish most of the time regardless. Some of mine are geared too steep to even do that, but that's okay with me. If they want to go faster, they can find another lane and go around. |
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