iamthewreckingcrew wrote:
As to how "fast" a 4wd can be, I think it all depends on how much money you throw at it. I've seen a 4wd click off low 10 second 1/4 mile times at the dragstrip. It was a newer brand X, but it still did it.
would that have been "parish's" truck? a blue reg cab short chevy?
Sure was. I watched him run when the Hot Rod drags came through Cordova. That guy can sure squeeze the power out of those newer Chevy motors. I'm Ford through and through, but I sure admire the ingenuity and performance of Parish's rides. The next year I saw him in the Fairmont and was stoked until I saw the Chevy motor in it.
for a bowtie, it is one bad truck. i heard he sold it. he brought it down to kansas city to whoop up on the lightning guys a couple of years ago and did a pretty good job of it too.
wanting to buy a mercury tailgate! "the man who is swimming against the stream knows the strength of it".- woodrow wilson
As far as gas milage goes, what do you guys think...
A 2wd (assuming automatic) bump still gets bad milage of course but from what everyone says, it seems auto's lower the MPG's 1 or 2 from what a manual would help save.
So do you think the mpg's from 2wd to 4wd would be about the same? Since the 4x4 will have more weight, and be a little less aerodynamic, but it will have a manual letting more power through.
Does this sound about right?
1971ford wrote:As far as gas milage goes, what do you guys think...
A 2wd (assuming automatic) bump still gets bad milage of course but from what everyone says, it seems auto's lower the MPG's 1 or 2 from what a manual would help save.
So do you think the mpg's from 2wd to 4wd would be about the same? Since the 4x4 will have more weight, and be a little less aerodynamic, but it will have a manual letting more power through.
Does this sound about right?
Depends on your style of driving and what you are doing. Once you are in TC lock the final drive is the same, so if you do a lot of highway driving the 2wd is going to do better. A lot of city driving and the auto is going to do a bit worse then the manual, but not too dramatic. I would still lean to the side of the 4wd getting less milage. All this is assuming the two trucks are identical except 2wd vs 4wd.
Bill
1967 F-250 LWB 2WD 352 V8, 4spd manual, true duals, 122k original miles (currently being restored)
1970 F-250 4x4 highboy ranger 390 V8, 4spd
2012 F-350 PSD FX4 LWB CC lariat, white http://www.fordification.com/galleries/ ... hp?uid=602 "If you want to judge a person's true character, give them power."
my 4x4 F-250 with 390 and 4.10 gears gets 10 MPG +/- 1 depending on load or weight of right foot,mostly foot.
There is a BIG difference from 55 and 70 mph,about 3mpg's
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mine has 3.50 gearing in it. and it is slow feeling on the highway. it feels like i have to push it to make it go faster. almost liek it needs another gear to get it going faster.
When I had a nice 390 in my '70 F-250 4x4 it managed a 14 MPG average for mostly highway driving. That was driving it 40K miles a year and having plenty of time into tinkering with it.
My '71 with a 4BT and 5 speed had a running average of 25MPG with a best tank of 29.2 MPG and a worst tank of 19.8 MPG. It had more torque and around 2/3 the HP of the 390.
Hmm. A best tank MPG of 29.2 in a lifted on 35" BFG mud terrains with 4.10 gears, a .8 OD and 500 lb/ft of torque? Doesn't sound right at all does it? It's true and it's all in the engine, transmission and how I drove it. The engine was under 1700 RPM for the better part of a 700 mile trip at 55 MPH on a 95 degree weekend. No engine fan, 195 thermostat and an economical turbocharger.
There isn't any difference in the bumpside 4x4 drivetrain that would cause it to have more parasitic loss than the 4x4 truck's of today. The main difference is in the engine's of bumpside era VS the engines of today. The engine technology is unneffected by 2wd VS 4x4.
In 2wd with hubs unlocked a 4x4 bump has negligably more parasitic loss than a 2wd. The only extra thing spinning is the transfercase gears.
Todd that sounds heavy to me. My 07 crew long bed with a diesel weighs 7300.
Bill
1967 F-250 LWB 2WD 352 V8, 4spd manual, true duals, 122k original miles (currently being restored)
1970 F-250 4x4 highboy ranger 390 V8, 4spd
2012 F-350 PSD FX4 LWB CC lariat, white http://www.fordification.com/galleries/ ... hp?uid=602 "If you want to judge a person's true character, give them power."
Todd, GVW is not the weight of your truck, it's the max weight it can carry.
A bump crew 4x4 should be around 6500 depending on equipment on/under it. My single cab 4x4 bumps are right around 6000 without bumpers, winches, toolbox, etc.
My 89 F-350 DRW 4x4 has a GVW rating of 14,000 and weighed 11K empty with the 12' bed I just removed. The bed itself weighed about a ton, but is being replaced by a nicer 11' bed with less crap welded to it that should weigh under 1000 pounds all done.
my bad .... (what was I thinking ) just saw that number on the tag
Gross Vehicle Weight (GVW): The empty weight of a vehicle plus the weight of its load in addition to the empty weight of a towed unit and its load weight.
Gross Vehicle Weight Rating (GVWR): The weight or value specified by the manufacturer as the maximum loaded weight of a single or combination vehicles. The gross vehicle weight rating of a combination vehicle (commonly referred to as the “gross combination weight rating) is the gross vehicle rating of the power unit plus the gross vehicle weight rating of a towed unit.
) just saw that number on the tag 