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Is F-150 Still King?
 
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Old 10-27-2009, 01:12 PM
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Question IDI Power?

hey guys. im not new to FTE, but i AM new to the IDI section. im looking at buying one that was swapped into a 77 highboy, and im wondering what kinda power i can expect from these motors? and fuel mileage? it has a 5 speed mated to it.
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'91 F250 red long box super cab w/ 460, 5 speed, 4x4.
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Old 10-27-2009, 01:16 PM
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175 hp 316 tourge is it a 6.9 or 7.3 turbo can riase the number 250hp 500 toure
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Old 10-27-2009, 01:20 PM
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it is 1991 7.3L. how hard or easy is it to put a turbo on em? and what kinda mileage can i expect with out one vs. with one?
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Trey, aka Stretch, aka Slim, aka Shorty, aka Seven-Footer, aka Daddy Longlegs.
'91 F250 red long box super cab w/ 460, 5 speed, 4x4.
'76 F100 tan custom single cab short bed w/ 360, 4 speed, NP205 4x4.
'78 F150 white single cab long bed w/ 400, C6, NP205 4x4.
Imagine what I could do if I had all my brain cells.
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Old 10-27-2009, 01:28 PM
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turbos can give u about 2 mpg more ur high boy is a f150 right the turb is bolt on there are no cpus on these trucks
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Old 10-27-2009, 02:59 PM
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highboy is an f250. is the 460 gas radiator big enough to cool the 7.3?
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Trey, aka Stretch, aka Slim, aka Shorty, aka Seven-Footer, aka Daddy Longlegs.
'91 F250 red long box super cab w/ 460, 5 speed, 4x4.
'76 F100 tan custom single cab short bed w/ 360, 4 speed, NP205 4x4.
'78 F150 white single cab long bed w/ 400, C6, NP205 4x4.
Imagine what I could do if I had all my brain cells.
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Old 10-27-2009, 05:15 PM
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Quote:
Originally Posted by 460/5 View Post
highboy is an f250. is the 460 gas radiator big enough to cool the 7.3?
not from what i have read but have not actaully tried it.
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91 F-250 7.3 N/A ZF-5 2wd, 4" ram air, Isspro gauges, IP turned up, 265/75/16 A/Ts, 15% tint, carter p4594 ele pump, 55w back up lights, class V hitch, 4" exhaust w/14" magnaflow diesel muffler, steering stabilizer (DD/hauler)
88 F-250 460 c6 4x4 Lifted on 36" TSL super swampers, stacks, MSD 6al, holley red, warn hubs (Mud truck)
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Old 10-27-2009, 06:48 PM
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That depends on what you intend to do with the truck.
Heavy hauling or towing in the summer, probably not going to do the job.

Just driving around, probably will be enough.

Diesel radiators are four core, brass and big.
The diesel radiator support is 6" taller than the gasser radiator support.

Mileage depends on where you live and how you drive more than what equipment you have.

Mountains, nothing flat and drive fast, 12 MPG.
Flat country, low elevation, drive reasonable, 15 to 20 MPG.
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Old 10-27-2009, 07:02 PM
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My 1991 F250's 7.3 Gets 10-13 here in Omaha, Mainly because it's intown driving and theres not a piece of flat fricken road in this city to drive on so I'll vouch for the bad intown hilly mileage. When i go home to Minnesota it gets about 17-20 so theres a big difference in mileage depending on your terrain and how you drive this engine.
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Old 10-27-2009, 07:11 PM
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The elevation in Omaha is not helping you either.
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Old 10-27-2009, 07:31 PM
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Really, i didn't realize the elevation here was so much different i guess...whats the best way to tune the engine to take the elevation here a little better? Any ideas to help me out?
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Old 10-27-2009, 07:58 PM
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ok. so it has a 5 speed. lets say im cruisin 70 around 2500 feet on open, slightly hilly roads, after adding a turbo, and running 33 to 35 inch tires with 4.10 gears?
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Trey, aka Stretch, aka Slim, aka Shorty, aka Seven-Footer, aka Daddy Longlegs.
'91 F250 red long box super cab w/ 460, 5 speed, 4x4.
'76 F100 tan custom single cab short bed w/ 360, 4 speed, NP205 4x4.
'78 F150 white single cab long bed w/ 400, C6, NP205 4x4.
Imagine what I could do if I had all my brain cells.
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Old 10-27-2009, 08:08 PM
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i would guess between 12 and 16 maybe...
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Old 10-27-2009, 08:44 PM
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Your not gonna get great fuel mileage with 4.10 gears not going 70 anyways. I get around 14mph with my 7.3 non-turbo 5 speed 4.10 gears, that's only going 60 mph, I rarely go over that speed.
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Old 10-27-2009, 09:01 PM
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33" tires will have you running 70 MPH at 2200 RPM with 4.10 gears and a ZF 5 tranny.
35" tires would drop the RPM to 2100 at 70 MPH.

Don't know why, but I thought Omaha was higher than 1100 feet.
I always thought it was about the same elevation as Ogallala at 3500 feet.
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Old 10-27-2009, 09:49 PM
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That sounds a little better... Those 33's are tough on mileage.

Ya, omaha is between 1000 and 1300 feet.. Ogalalla is going into the dunes...going towards the rockys...
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