According to the timer on my cellphone it took my '82 inline powered F100 19.4 seconds to hit 60 Mph. Compared to 7.4 seconds for my 86 F150 with the HO 351, and 8.1 seconds for my 302 powered 96 F150.

Aside from the straight pipe exhaust my 300 is stock, still has the useless 1bbl carb .

 

were your 351 and 302 trucks stock? im impressed...

19.4 on a 300 sounds about right. mine even has a slipping clutch so it takes me quite a while. mine was slow as hell when i got it. my fuel filter was so clogged (it was probably the stock one from 1983 with 95k miles on it) that when i changed it i picked up 5 mpg. then i changed the sparky stuff and cut the cat and muffler off (WOW....what were they even thinking?) and reaplced it with a Super Turbo i had laying around from my mustang. Its not too bad now. i think if/when i change the clutch this summer ill have to time it. if i timed it now i'd probably just laugh.

 

I don't know why you guys keep saying 19 sounds about right. The 300 isn't THAT slow... is it? Or is mine "quick" (I know it's still a dog) because it has EFI?

 

I agree with you 6CylBill. Unless someone really messed something up there should be no reason the 300 is that slow. Minivans run quarter miles in that time! Like you said they are not fast by any sense of the word but they are not that slow either. Maybe I just don't want to believe it. I think if people listed what tires, tranny, rear gear, and any mods to the motor along with their times we could get to the bottom of this!

 

id put most minivans up against a 300 anyday, especially the ones in the bigger, heavier trucks. sorry guys

i think the efi definitely helps. and again, the PO of my truck didnt do ANYTHING to it, so it was in a pretty sorry state of repair. ive been working on it peice by peice and its getting better, but im sure when i first got it itd do 0-60 in 20 seconds or so.

tires and gears and trannies definitely vary the times people will get, however its a pretty good assumption that most everyone is going to 60 in third gear on the NP435s and 2nd on the e4ods. Only one shift (not 2 like alot of the rice burners out there need ). And the 300 is torquey enough that "short shifting" it (or varying the total gear ratio by way of tires, gears, and trannies) wont really affect the times that much. point is, roughly speaking, itll do 0-60 in 15 seconds uphill, downhill, through a brick wall, running over dead bodies, or towing 15000 pounds.

You guys doing the 0-60 in 10-12 seconds have EFI and actually take care of your trucks, so youre very representative of what they should be doing. Theres alot of guys out there though who dont take care of them (like my PO) and then theres way more carb'd ones out there too. Id add a second or two for a carbd one. but thats me.

 

Exactly 5.0Torx, well put. While I choose to use my Inline 6 for what it was designed for I understand why some of us want to get as much as posible out of the motor.

 

I must admit you are probably right about the 0 - 60 times guys. Especially if it is a stock one barrel carb motor with stock exhaust. They are not meant to be fast revving race motors and they are in a heavy vehicle. However I have to disagree with you on the tire and gear ratio point, but only for a dramatic change. When I put my 35in tires on my all stock truck (before the intake/carb and cam) it made my already slow truck almost impossible to drive. Had to fight to keep it above 50mph. So I know for a fact that it does have a big impact on acceleration and speed. Of course that is after changing the tire diameter by 6in and adding the extra weight of bigger tires and wider rims. Beyond that I will admit I can not argue with anything you pointed out 5.0Torx.

 

It isn't just the weight of large tires, it's the moment of inertia. Even if the tire weighed the same a taller tire would take more torque to accelerate. A 40" tire has about 75% more MOI than a 30" tire, so it's almost twice as hard to spin before you even add in the weight. Couple that with the reduce effective gear ratio and you've got a truck that is able to generate a lot less forward force at the road. Couple that with the fact that most people don't recalibrate their speedometer after a tire/gear swap and you've got a real lousy feeling from the driver's seat.

 

That is why I am stepping up to 4.56 gears with a trutrac. I was just waiting for spring because I am taking only the center section of my 9in and D44 to the shop and I didn't want to work in the cold. I am having problems figuring out what speedo gear I am going to need though. I have the 20 tooth gear already and I can't find a 22 tooth one which if I did the math right is what I would need. That and I have been given 3 different equations to figure it out I am not even sure if any of them are right!

 

Why don't you just leave the current gear in the speedometer and get a speed ratio converter to install between the trans and cable? Then it's a straight forward adjustment. The change from 20 teeth to 22 teeth doesn't sound like anywhere near enough unless the gears you had before are 4.10's.

 

To be honest I had never thought of that. Thanks for the tip. That would solve my problem. Do you happen to have a link to a store where I could buy one? I did a quick search and the ones I saw were for GM trannys.

 

just curoius, what gearing do you have? my '94 f150 is a lot slower than yours and it's only got 72000 mi., but it's got the 2.73 rear end.

btw. nice truck, good to see one with out rust on it

 

Towing 15,000 lbs...thats rich.

 

Why do you say that? 15k is not unreasonable for an F600. Remember, 300's powered a lot more than just f100's and 150's.

 

Here we go again.Were f600s ever mentioned?I believe the quote was something about a 300 pulling 15,000lbs 0-60 in 15 seconds.Aint gonna happen.Aint gonna happen in an F600 either.But everyone go ahead and give me their best shot on expaining to me how it will.