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post #1 of 12 (permalink) Old 09-05-2009, 07:57 PM Thread Starter
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horsepower and big tires

I just had my truck dynoed today at Edge and i'm really dissapointed in the results 306 hp and 583 tq. Now is that because I have stock gears 3.73 and 38 in. tires? I'm running DJs Looney tune.

2005 F350 CC SB ,Turbo-back Silverline duals 304 ss , 03 turbo, cat delete , Toyo 38 x 15.50 x 20 , Pro 10in. lift , Sway-away coilovers and shocks, Autometer triple gauges , SCT tunes by DJ's , Pioneer Avic F90BT, OUO driveline drop, CCV mod, FS-2500, Mag Hytec
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post #2 of 12 (permalink) Old 09-05-2009, 08:13 PM
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Re: horsepower and big tires

I was going to drive up there but I didn't think they would run my tires. I tried contacting them to ask with no luck.

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post #3 of 12 (permalink) Old 09-05-2009, 08:41 PM Thread Starter
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Re: horsepower and big tires

Yeah, there were some people with 40s on the dyno, so I dont think there would have been a problem. It was a good turn out.

2005 F350 CC SB ,Turbo-back Silverline duals 304 ss , 03 turbo, cat delete , Toyo 38 x 15.50 x 20 , Pro 10in. lift , Sway-away coilovers and shocks, Autometer triple gauges , SCT tunes by DJ's , Pioneer Avic F90BT, OUO driveline drop, CCV mod, FS-2500, Mag Hytec
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post #4 of 12 (permalink) Old 09-05-2009, 10:03 PM
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Re: horsepower and big tires

big tires and stock gears will kill your hp readings...

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post #5 of 12 (permalink) Old 09-05-2009, 10:11 PM
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Re: horsepower and big tires

I don't know about killing it by over 100rwhp though. You sure the dyno operator knew what he was doing?

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post #6 of 12 (permalink) Old 09-05-2009, 10:41 PM
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Re: horsepower and big tires

Ya thats odd, I ran 37's with DJ's looney file years ago and still put down 420hp

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post #7 of 12 (permalink) Old 09-05-2009, 11:38 PM
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Re: horsepower and big tires

X2

I have 41's, 4.56 gears, DJ's custom looney,..and I put down 405hp, 786tq
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post #8 of 12 (permalink) Old 09-06-2009, 12:28 AM Thread Starter
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Re: horsepower and big tires

Quote:
Originally Posted by imelmo View Post
I don't know about killing it by over 100rwhp though. You sure the dyno operator knew what he was doing?
I was wondering that myself. Another guy there with a 6.4 with a
spartan 275 tune and he only put down 440, I thought for sure he would be in the 500 range.

2005 F350 CC SB ,Turbo-back Silverline duals 304 ss , 03 turbo, cat delete , Toyo 38 x 15.50 x 20 , Pro 10in. lift , Sway-away coilovers and shocks, Autometer triple gauges , SCT tunes by DJ's , Pioneer Avic F90BT, OUO driveline drop, CCV mod, FS-2500, Mag Hytec
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post #9 of 12 (permalink) Old 09-06-2009, 02:12 AM
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Re: horsepower and big tires

on some dynos bigger tires help you. it can get more load on the truck and build more boost. i dont think the guy knew what he was doing.

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post #10 of 12 (permalink) Old 09-06-2009, 05:53 PM
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Re: horsepower and big tires

Quote:
Originally Posted by hotwheels31 View Post
I was wondering that myself. Another guy there with a 6.4 with a
spartan 275 tune and he only put down 440, I thought for sure he would be in the 500 range.
You oughtta go weigh your truck and bring it to the track. The trap speed with an accurate weight will tell you your true rwhp.

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ALSO LOTS OF HELP FROM (IN NO PARTICULAR ORDER) TWISTED DIESEL PERFORMANCE, FCDP, ITP, MATT WITH GEARHEAD, ERIC WITH INNOVATIVE, DOUG WITH GOGO DIESEL, CASS WITH FULL FORCE DIESEL, AND SWAMP'S

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