8" convertor don't understand
#1345086
12/02/12 07:16 PM
12/02/12 07:16 PM
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Joined: Jan 2004
Posts: 1,468 N.Y.
sixpacksteve
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OP
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N.Y.
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i had my convertor ste up for my motor 5500 stall, bout 550 hp worked great, was flashing bout 4500. put my new motor in bout 700 hp. ran on chassis dyno it flashed at 6200. i thought it would be the opposite. should of flashed lower? is this correct?
Hell Hath No Fury Like Mine
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Re: 8" convertor don't understand
[Re: sixpacksteve]
#1345088
12/02/12 07:26 PM
12/02/12 07:26 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Master
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Posts: 52,972
Romeo MI
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Quote:
i had my convertor ste up for my motor 5500 stall, bout 550 hp worked great, was flashing bout 4500. put my new motor in bout 700 hp. ran on chassis dyno it flashed at 6200. i thought it would be the opposite. should of flashed lower? is this correct?
More TORQUE moves the stall point UP...nothing to do with HP
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Re: 8" convertor don't understand
[Re: MR_P_BODY]
#1345089
12/02/12 07:30 PM
12/02/12 07:30 PM
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Joined: Jan 2004
Posts: 1,468 N.Y.
sixpacksteve
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thats fine. for some reason i thought it would move down. thanks
Hell Hath No Fury Like Mine
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Re: 8" convertor don't understand
[Re: LSP]
#1345091
12/02/12 08:55 PM
12/02/12 08:55 PM
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Joined: Jan 2004
Posts: 1,468 N.Y.
sixpacksteve
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peak is suppose to be some where around 6800-7000
Hell Hath No Fury Like Mine
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Re: 8" convertor don't understand
[Re: sixpacksteve]
#1345092
12/02/12 09:10 PM
12/02/12 09:10 PM
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Joined: Jan 2003
Posts: 5,894 Florida
Locomotion
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Posts: 5,894
Florida
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Quote:
peak is suppose to be some where around 6800-7000
Would that be peak horsepower? I'll bet it's a big block. I've seen race combos that work well with converters that flash about 1,500 rpm less than the shift points. But it mainly depends on torque peak. Other variables affect the optimum #'s.
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Re: 8" convertor don't understand
[Re: sixpacksteve]
#1345096
12/03/12 12:18 AM
12/03/12 12:18 AM
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Joined: Aug 2003
Posts: 43,230 Bend,OR USA
Cab_Burge
I Win
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I Win
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Posts: 43,230
Bend,OR USA
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Quote:
peak is suppose to be some where around 6800-7000
Like most race parts you will have to find out what RPM the motor and trans go the fastest at, not a predetermined RPM My first pump gas stroker made peak torque at 4500 RPM and peak HP at 5600 RPM, the stupid car woould run its fastest ET and MPH by shifting it at or above 7200 RPM Go to the track and make a plan to run the car enough to make it consistent and then try shifting it at 5500 RPM in all gears for several runs and then try 6000 RPM for several and then 6500 RPM, the goal is to find the RPM that makes the car the fastest, with me anyways Once you find the RPM spread, say it runs the best by shifting at 6500 RPM but not lower than 6500 RPM or higher than 7000 RPM, try shifting it at 6700 RPM for several runs and whittle a away hundred RPM at a time until you find out what it likes at that track that day
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: 8" convertor don't understand
[Re: Cab_Burge]
#1345097
12/03/12 09:22 AM
12/03/12 09:22 AM
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Joined: Jan 2004
Posts: 1,468 N.Y.
sixpacksteve
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the chassis dyno shows where it flashs, going to call lenny at ultimate and give him the specs so he can reset it. didn't think there would be such a huge difference. probably need to change rearend gears, and bigger tires also!
Hell Hath No Fury Like Mine
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Re: 8" convertor don't understand
[Re: sixpacksteve]
#1345098
12/03/12 01:22 PM
12/03/12 01:22 PM
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Joined: Jan 2003
Posts: 8,028 Tulsa OK
Bad340fish
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Tulsa OK
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My converter always flashed higher on the chassis dyno vs real world. Might be something to consider.
68 Barracuda Formula S 340
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Re: 8" convertor don't understand
[Re: dartman366]
#1345100
12/03/12 06:35 PM
12/03/12 06:35 PM
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Joined: Jan 2004
Posts: 1,468 N.Y.
sixpacksteve
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so if i had a 1500 hp motor this wouldn't flash at all?
Hell Hath No Fury Like Mine
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