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Old Nov 20, 2012 | 10:49 PM
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Extra HP?

I Just started racing my mud truck this year, and Im looking to squeeze every little bit out of the motor (390). Anyone know of some easy things to do to get a little extra HP?

And also, as far as building the motor up, any suggestions on a crank,cam, ect...?
 
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Old Nov 20, 2012 | 10:49 PM
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Every little bit helps guys!!
 
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Old Nov 21, 2012 | 07:31 AM
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if its a late 70's early 80's motor, they were underpowered (low compression) motors due to smog regulations from the factory. search the forums, there is alot of info on building these motors
 
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Old Nov 21, 2012 | 10:08 AM
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Car Craft did a 390FE build a few years ago. It's linked in the last post of the tech thread sticky.
 
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Old Nov 21, 2012 | 10:26 AM
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fastest cheapest power is nitrous. That motor will probably handle at least a 100 shot before things go boom, but I'd definitely use race gas and probably use an msd box to retard the timing under spray.
 
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Old Nov 21, 2012 | 11:53 AM
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445FE stroker! you'll be the king of your local mud pit.

Survival Motorsports Home Page
 
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Old Nov 21, 2012 | 01:23 PM
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Maybe a straight up timing install, then headers and exhaust.
 
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Old Nov 21, 2012 | 02:58 PM
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Remember exterior eng mods may put you in a different class?? And then the fun really begins....

Yes on the timing, intake, carb, headers and elec up grade. Then comes the clutch, or transmission, then the 1310 u-joints and the in put/out put flanges on the t case and HD drive shafts. Then chrome moly axles and a locker and a spool and drive flanges and traction bars, regearing the axles will come in with bigger tires. Then the front end blows up when you launch out of a hill and a hole with the juice just a making that 390 scream and you will be looking for a D60 and stuff it with $$$

Maybe regearing should be right in there with the timing, intake and carb?

Here you go as a idea...EB but you get it right?

http://www.google.com/url?sa=t&rct=j...bLFalqqJynontQ
 
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Old Nov 21, 2012 | 03:24 PM
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Originally Posted by 77&79F250
Remember exterior eng mods may put you in a different class?? And then the fun really begins....

Yes on the timing, intake, carb, headers and elec up grade. Then comes the clutch, or transmission, then the 1310 u-joints and the in put/out put flanges on the t case and HD drive shafts. Then chrome moly axles and a locker and a spool and drive flanges and traction bars, regearing the axles will come in with bigger tires. Then the front end blows up when you launch out of a hill and a hole with the juice just a making that 390 scream and you will be looking for a D60 and stuff it with $$$

Maybe regearing should be right in there with the timing, intake and carb?

Here you go as a idea...EB but you get it right?

http://www.google.com/url?sa=t&rct=j...bLFalqqJynontQ


Well I had plans on upgrading my axels for sure...what do you think about 4:11 gears?
 
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Old Nov 21, 2012 | 03:26 PM
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Another question....I was planning on relocating the radiator to behind the cab in the box, as far as the Electric fan goes, can I just find any electric fan and fab it to fit over my radiator, or do I need a specific one?
 
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Old Nov 21, 2012 | 04:34 PM
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A set of fans out of a taurus are a common swap and easy to do. So this truck is mud runner now only? Get started on water proofing toy elc compartment and electric items in there. The distributor is #1 and coil.

With that 6' lift and 38's or 39's toy are planning on running as long as the tires are getting traction from some HP mods, you should stay on top and the rad outa the mud.

Check out this

 
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Old Nov 21, 2012 | 05:15 PM
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Thanks for your help 77&79F250, if there is anything else you can think of later plz do let me know....as far as the videos go, is that your truck?
 
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Old Nov 21, 2012 | 05:20 PM
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Originally Posted by grot_berg
Another question....I was planning on relocating the radiator to behind the cab in the box, as far as the Electric fan goes, can I just find any electric fan and fab it to fit over my radiator, or do I need a specific one?
Look up the last post tech thread sticky for info on electric fans. The dual Taurus or single monster Lincoln Mark VIII from the JY is a good low buck solution.
 
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Old Nov 21, 2012 | 05:20 PM
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Originally Posted by HIO Silver
Car Craft did a 390FE build a few years ago. It's linked in the last post of the tech thread sticky.

Where can I find that? Ive looked around.
 
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Old Nov 21, 2012 | 05:27 PM
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Originally Posted by grot_berg
Where can I find that? Ive looked around.
Oy.

The tech thread sticky is one of the three threads starting with "Read First" on page 1 of this forum... up at the top.

See 'em?

Go to the last post and scroll down to the different engine builds.
 
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