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Competition Diesel racing, sleds, dynos, power tuning and max performance.

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Old 07-19-2007, 04:42 PM
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1985 F.250 4x4 Pulling Truck

Im building a sled pulling truck, its got the 300 6 with the 4 speed standard tranny, high low 4 wheel drive and 4.11 gears, its going to get lincoln lockers front and rear because it will be trailered everywhere. Its got a hydrallic clutch. What do you think about this, i really do not want to hear put a V8 in it. That is way out of the question, i want to show people what the 300 can do, so anyway what can i do to keep it cool, this truck will be used in truck pulles, (bumper to bumper) and these 300s get hot real easily, im thinking 4 core rad, and dual electric fans, any1 have a cheaper way to keep it cool
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Old 07-19-2007, 10:12 PM
6L PWR 6L PWR is offline
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You do realize this is the DIESEL COMPETITION thread, right? There should be a thread related to gassers for you.
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Old 07-20-2007, 07:37 AM
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i dont see 1 for sled pulling in any of the gas engine forums, but u should take into consideration the 300 is most like a diesel. But if any of you diesel guys want to chain em up for dibs on speaking in here, im more then game,
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Old 07-20-2007, 07:40 AM
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he aint right
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Old 07-20-2007, 01:49 PM
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Quote:
Originally Posted by Ford-Trucker84537
But if any of you diesel guys want to chain em up for dibs on speaking in here, im more then game,
The 300 is a good engine, but you're badly mistaken if you think it can pull with a lot of the diesel's out there...

What mods have you/are you planning on doing to the engine?

Tim
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Old 07-20-2007, 04:06 PM
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Quote:
Originally Posted by Ford-Trucker84537
i dont see 1 for sled pulling in any of the gas engine forums, but u should take into consideration the 300 is most like a diesel. But if any of you diesel guys want to chain em up for dibs on speaking in here, im more then game,
You gonna go against 650HP and 1400 ft-ls Torque?
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Old 07-20-2007, 07:12 PM
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once you get to the point you can turn over all four good, I think weight is the most important thing in truck/truck pulling, along with durability and of course your hitch point height in relationship to your foe. with your truck you will never be heavy enough(or have enough tq) to take on oil burners, even old ones. I would stick to gassers, I pulled many a chevy 1500 4x4 backwards with my old *****ty dodge ramcharger, it had a wipped stock 318 in it. I pulled mostly on black top, low range 31x10.50s about 150hp I would hold the brake with it locked in low/low until they started too spin, then let up on the brake and floor it ! It would go wwaaaaa and barley spin the right front and pull them backwards, but they were all empty 1500s I simply outweighed them.
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Old 07-20-2007, 07:48 PM
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Originally Posted by lowet
once you get to the point you can turn over all four good, I think weight is the most important thing in truck/truck pulling,
Aw come on, don't give away everything. lol Heck, I'm only 8200 pounds with all that power. Surely he can pull it backwards.
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Old 07-20-2007, 09:14 PM
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the 300 six, my old Dodge, and my v10 and we would have a chance ! we would be good on lbs. but you still have us on power, another v10 and I think we could take you, if the dodge trans. held.
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Old 07-21-2007, 04:40 AM
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WOW! a 6.0 with 650 hp and 1400 tq.driven daily?
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Old 07-21-2007, 12:08 PM
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Quote:
Originally Posted by 79superduty
WOW! a 6.0 with 650 hp and 1400 tq.driven daily?
Ah yeah, think I can afford a second vehicle?? ROFLMAO

Mine ain't all that either. There's lots of other guys out there with higher numbers that are daily drivers as well. Just not that many members in this forum as stupid as me.

ON EDIT: Those numbers are an estimate currently. I dyno'd with the stock turbo at 586.4HP and 1204 torque. New numbers will be coming as soon as I can!
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Old 07-24-2007, 04:32 PM
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All you need power for in pulling in turning the wheels, i got 4.11s and with that 300 in 4 low im not worried about not being able to turn the wheels, not all to worried about being able to get the truck heavy enough, its got 2 sets of 3/4 ton leafs on both sides in the back + a helper spring, i can probably put anything i ant back there to a resonable point and it wont squat and i have a capfor it so no one can see what i got in the back
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Old 07-24-2007, 08:00 PM
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Quote:
Originally Posted by Ford-Trucker84537
All you need power for in pulling in turning the wheels, i got 4.11s and with that 300 in 4 low im not worried about not being able to turn the wheels, not all to worried about being able to get the truck heavy enough, its got 2 sets of 3/4 ton leafs on both sides in the back + a helper spring, i can probably put anything i ant back there to a resonable point and it wont squat and i have a capfor it so no one can see what i got in the back
You're gonna want weight in the front for pullin'.
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Old 07-25-2007, 09:44 AM
SR_Crewchief SR_Crewchief is offline
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Quote:
Originally Posted by Ford-Trucker84537
All you need power for in pulling in turning the wheels, i got 4.11s and with that 300 in 4 low im not worried about not being able to turn the wheels, not all to worried about being able to get the truck heavy enough, its got 2 sets of 3/4 ton leafs on both sides in the back + a helper spring, i can probably put anything i ant back there to a resonable point and it wont squat and i have a capfor it so no one can see what i got in the back
I take it that your going to be doing "brush" pulls vs sanctioned.

You need power and torque that won't bog down under heavy load.

You need weight to apply said power and torque.

You need strong drivetrain components to keep the power and torque applied.

Whether the pulls are sanctioned or not find out what the compation rules are. They will dictate how you need to build. In a light weight street gas truck class, a properly built 300 has a chance of being competative. If the class allows big block v8's forget about being competative and plan on just having fun.
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Old 07-27-2007, 03:25 PM
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Whether the pulls are sanctioned or not find out what the compation rules are. They will dictate how you need to build. In a light weight street gas truck class, a properly built 300 has a chance of being competative. If the class allows big block v8's forget about being competative and plan on just having fun.[/quote]

This is really going to be your underlying issue. If you are pulling in a "stock" class, I would say why not the 300!!! It's cool to see guys trying different combinations, but once you start playing with modified gas trucks you are going to run into some serious pullers. It is not simply having hp/tq and being able to spin the tires. You have to figure in engine rpm's, gearing, tire size, wheel speed, track speed and weight distribution to name a few things. Depending on where you are competing, it can get very technical. I've seen plenty of guys with tons of power that can not compete. They do not have all of the other aspects figured out.

As far as your hydraulic clutch question goes, I would run it. We have an 83 Ford that is running a 466 with the hydraulic clutch. As long as you are not wanting to "slip" the clutch too much coming out of the hole, it will hold. If you are planning on serious performance/pulling, you would be better off to convert it to a high performance pedal/fork style application.
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Old 07-27-2007, 03:25 PM
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