351w to inline six turbo.
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351w to inline six turbo.
I have a 300 inline six, that I am thinking about putting into my 1989 E350 4x4 van, 4.11 gears, 35" tires. The van presently has a 351w which is in need of a rebuild. The 351 has been a good engine except for the best mileage I can get is 10mpg, and it doesn't have the low end grunt I'm looking for.
My van weights in at about 5000lbs, and I pull a boat about 5000lbs, would the 300 be overworked with this much weight? I'm sure with a few mods the inline would be a better puller at low speeds, but what about 70mph? I would be putting a turbo on the engine to help with the higher rpm's.
I like the longevity of the six, and the low end grunt. I'm not looking for a dramatic increase in mileage, but maybe up to 15mpg would be obtainable. I really want a good driver, but not a racer.
Thanks, Brad.
My van weights in at about 5000lbs, and I pull a boat about 5000lbs, would the 300 be overworked with this much weight? I'm sure with a few mods the inline would be a better puller at low speeds, but what about 70mph? I would be putting a turbo on the engine to help with the higher rpm's.
I like the longevity of the six, and the low end grunt. I'm not looking for a dramatic increase in mileage, but maybe up to 15mpg would be obtainable. I really want a good driver, but not a racer.
Thanks, Brad.
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351w to inline six turbo.
Yes an inline 6 will do just find with your E350 van, especially if you turbo charge it. Just make sure to open the exhaust, if carburated I would add a offenhauser intake, a 450 to 500cfm carburator, maybe a camshaft, and a MSD-6A ignition. If the 6er is EFI you will need to install 19#/hr fuel injectors. If you do this, the 300-6 you want to install will pull anything you throw at it. One more thing though, if you do go to 35" tires, you might want a lower gearing in the diff either than 4.11s. I recommend that you install 4.30s with those taller tires!!! 4.11s would be to small for such a big tire. Good luck dude!!!!!
1994 Ford F150
300-6
Highly Modified and more to come!
1994 Ford F150
300-6
Highly Modified and more to come!
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351w to inline six turbo.
Thanks. I will be going carb, probably a 500cfm 4 bbl. I will have to custom make my own exhaust, probably come off the stock exhaust manifold into the turbo, possibly port the manifold for better flow. I am going to install a low first gear in my C6, Ford Motorsport has a kit for this, hopefully this will help my gearing from a stop, I want to try and keep the 4.11's for highway travel. I already have 35's, but if I have to, I will go to 33's
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Post Fiend
Joined: Jan 2000
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From: Metro Detroit (Redford)
351w to inline six turbo.
Perhaps with a turbocharger, but in stock form I would never expect the 300 to outpull a 351. If you got 10 mpg from a 351 with a total combined weight of 10,000 lbs, that's pretty good. My stock EFI 300 I6 got about 10 to 11 towing with a total combined weight of 6,600 lbs. That was turning 2,600 rpm at about 70 mph. Turbocharge it and I would expect the mileage to go down. I have a motorhome (E350) that weighs around 10,000 lb loaded and with its 460 I get 8.2 mpg at about 65 mph. The best way to improve gas mileage when towing is to slow down to reduce wind resistance. Previous owner of my motorhome got 10 to 11 mpg at 55 mph.
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351w to inline six turbo.
Yeah in stock form a 300 can't out pull a 351. 51 more cubic inches gives about 60ft/lb of more torque. However don't be fooled over numbers. Horsepower and torque at different rpm ranges makes for a different engine. If you beef up the 300-6 then TC it, man I wouldn't want to go bumper to bumper with ya! YIKES! Talk about gobs of low rpm GRUNT UHN!
The 300-6 I've got now, pulls like a beast clawing itself out of the pit of hell. I wonder what it would be like to install a better cam, 1.7 rocker, and then TC this EFIed beast (I've got 19# injectors). I think I would break driveline parts eventually!
I do agree with TallPaul however on the subject that if you go slower, 70 versus 55, you will get better mileage. It is a proven fact! When you try pushing a 3 ton brick through the air at high speeds, you sacrifice mileage for power and speed. Man a TCed 300-6 should be awesome to play with. Especially when you get on the gas. Woo Hoo!
1994 Ford F150
300-6
Highly Modified and more to come!
The 300-6 I've got now, pulls like a beast clawing itself out of the pit of hell. I wonder what it would be like to install a better cam, 1.7 rocker, and then TC this EFIed beast (I've got 19# injectors). I think I would break driveline parts eventually!
I do agree with TallPaul however on the subject that if you go slower, 70 versus 55, you will get better mileage. It is a proven fact! When you try pushing a 3 ton brick through the air at high speeds, you sacrifice mileage for power and speed. Man a TCed 300-6 should be awesome to play with. Especially when you get on the gas. Woo Hoo!
1994 Ford F150
300-6
Highly Modified and more to come!
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351w to inline six turbo.
I am going by what all your OTR semi's run, and they are straight 4's or 6's. Of course they are diesel, but it is all the same concept. They are low torque monsters, especially with a turbo. My 351 would pull better at higher rpm's, and that is really my only worry with the 300, but add a turbo and I think your pulling power at high rpm's would be better than the 351. From what I've read, your straight sixes actually balance out and can run higher rpm's smoother, because the turbo pressure tends to push the pistons down in the intake stroke. Fuel economy will also actually tend to increase, because with the pressure in the manifold, the fuel vaporizes more efficiently, and causes a more efficient burn in the cylinders.Oo
These are just things I'm finding in my research, and they are from guys who have done this from experience, so it should be pretty accurate info, but if you have anything to add please do so, I like to hear all sides of the story.
maybe I'm just trying to convince myself to go ahead with this project, it would be really cool to hear turbo wine coming from a E350 van, and not have the Diesel knocking.
These are just things I'm finding in my research, and they are from guys who have done this from experience, so it should be pretty accurate info, but if you have anything to add please do so, I like to hear all sides of the story.
maybe I'm just trying to convince myself to go ahead with this project, it would be really cool to hear turbo wine coming from a E350 van, and not have the Diesel knocking.
Post Fiend
Joined: Jan 2000
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From: Metro Detroit (Redford)
351w to inline six turbo.
I understand that Ford 300 I6s were run in F600 trucks, school busses, UPS trucks, and combine harvesters. I used to run a limb chipper that was powered by a 300 I6. So the engine certainly has solid guts. Some of these applications used the HD version 300 I6 which had a forged steel crank instead of the typical nodular cast iron and also had special valves and pistons.
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351w to inline six turbo.
[font size="1" color="#FF0000"]LAST EDITED ON 25-May-01 AT 01:12 AM (EST)[/font][p]i have recently put a turbocharger on an 84 f250 4x4 300-6. i originally expected the feel of a race car from what people said about turocharging. the best way to describe the difference between how it was normally & how it is now is to say that it feels much like a diesel. you can very quickly accelerate to highway speed, however the biggest difference is noticed under load. hills become fun to climb. heavy loads such as campers, just mean that the turbo is able to be used to it's max potential. it's all just a matter of how much boost you can run without detonation. with an msd boost timing master, 6btm, 9 pounds is easy to achieve. I have been able to get 16 mpg so far when driving normally. Its a fun project but bring cash. richard
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351w to inline six turbo.
Richard,
What kind of a turbo did you use? Did you do any internal mods to the engine(cam)?
I just purchased a Nissan 300 ZX turbo, the price was right, so I will have to fabricate it to fit.
Sounds like what you have achieved, is exactly what I'm looking for. Cant wait to hear the Turbo wine!
What kind of a turbo did you use? Did you do any internal mods to the engine(cam)?
I just purchased a Nissan 300 ZX turbo, the price was right, so I will have to fabricate it to fit.
Sounds like what you have achieved, is exactly what I'm looking for. Cant wait to hear the Turbo wine!
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351w to inline six turbo.
[font size="1" color="#FF0000"]LAST EDITED ON 26-May-01 AT 02:05 AM (EST)[/font][p] hey 4x4E350, the turbo i have is a roto-master t04b. i'm not sure of the trim & turbine it contains as i bought it used. i had it professionally rebuilt when it puked out oil when first started. i do know it had been used on a 300 I-6 before so figured it should work for me. i'd check into if the nissan one you have would be ok or not. all depends on what kind of driving you'll do. there are lots of options available. richard
84 f250 4x4
300 I-6, turbocharged
84 f250 4x4
300 I-6, turbocharged
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351w to inline six turbo.
I just finished with putting my 300 turbo in the van, and had a few oppurtunities to take it on some test runs, still working out the fine tuning. :7
I can say that I'm really pleased with the outcome so far, there is much better drivability at low speeds, and the turbo wine sounds pretty cool too. I get about 5 pounds of boost at open throttle, but that should be enough for me, because it really seems to pull hard.
I think I'm still running a little lean right now under boost, because I'm getting a little knocking, and the MSD6 BTM should take care of that.;-
I can say that I'm really pleased with the outcome so far, there is much better drivability at low speeds, and the turbo wine sounds pretty cool too. I get about 5 pounds of boost at open throttle, but that should be enough for me, because it really seems to pull hard.
I think I'm still running a little lean right now under boost, because I'm getting a little knocking, and the MSD6 BTM should take care of that.;-
