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Old 05-19-2004, 06:47 PM   #1
68w/sbc406
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Dyno

has anyone had their truck dynoed? how much did it cost? is 3 runs for 75 bucks expensive?
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1968 1/2 ton 2wd lwb 6 lug disc and bags up front. Next c notch and rear bags

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Old 05-19-2004, 06:52 PM   #2
dion
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I have, it was $80 for 2 pulls or $120 for the "Dyno Tune" and the 2 pulls so I'd say your price is pretty good.
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Old 05-19-2004, 07:06 PM   #3
buckola
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Gee Dion,
Don't leave us hangin...what were the results?
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Old 05-19-2004, 07:09 PM   #4
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Everyone around here says it will cost at least 200-250 for 1 dyno pull. I need to start doing some research!!!
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Old 05-19-2004, 07:24 PM   #5
dion
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390 at the flywheel, not too bad for a sbc.

$250 for 1 pull? whoa, that's steep. I don't think I'd want to find out that bad.
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Old 05-19-2004, 07:47 PM   #6
jorgensensc
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Exactly why i haven't done a dyno tune, which is what I really want to do.
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Old 05-19-2004, 08:18 PM   #7
Bamm
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A lot of the Super Chevy Shows have a dyno set up. I think last year it was 2 pulls for $75 here in Va................Jerry
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Old 05-19-2004, 09:19 PM   #8
68w/sbc406
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how big of a difference is there between flywheel torque/HP and rear wheel torque/HP
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1968 1/2 ton 2wd lwb 6 lug disc and bags up front. Next c notch and rear bags

'02 Chevy Silverado LT ext cab short bed 2WD 5/7 drop on 22's(the family car)

1993 Cherokee work ride/weekend wheeler
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Old 05-19-2004, 09:32 PM   #9
useRc10
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at the car show put on by CNU they were charging like 80 for 2 pulls. i got it for free since i was in the club hosting the show. I got something like 250hp at the rear wheel...torque was something like 380 i think
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Old 05-19-2004, 10:21 PM   #10
LONGHAIR
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The best I could find is this.

"The difference between flywheel horsepower and rear-wheel horsepower will vary from vehicle to vehicle, depending on many factors," adds Gale Banks Engineering, "but we find that rear-wheel horsepower is usually between 18 percent and 25 percent less than flywheel horsepower."

It depends upon which transmission you use.
Most manuals take about 15-18 hp
Powerglide.....................15 hp
TH350 .........................25 hp
TH400..........................35 hp
700R4..........................25 hp

Then you have the loss through the Ring & Pinion, Brake drag, Tire Size/Weight
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