Author Topic: 383/496 stroker dyno!  (Read 828 times)

Offline 73cudabr

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Re: 383/496 stroker dyno!
« Reply #15 on: May 19, 2017 - 12:01:09 pm »
I got 472 rwhp, 140hp lost in the 727!!

I see you have a electric water pump and 3 inch exhaust. Is it a belt fan or electric? 22 percent seems like a lot to lose.




Offline 734406pk

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Re: 383/496 stroker dyno!
« Reply #16 on: May 19, 2017 - 09:21:58 pm »
I see you have a electric water pump and 3 inch exhaust. Is it a belt fan or electric? 22 percent seems like a lot to lose.

22% sure seems like a lot to lose, converter slippage? I wonder how a four speed manual compares? Basically when a manual 4 speed is in 4th gear, input shaft and output shaft are connected as one... Same as a TF727 in drive less the hp loss turning the hydraulic pump and converter.  :clueless:
1973 Challenger 440 6 pack auto 3.91 rear
2012 Dodge Ram 3500 dually 6.7 Cummins Fleece EFI Live
1973 Challenger 318 2bbl auto 2.73 rear 22.5 mpg RIP
1970 Challenger TA 340 4bbl auto-Sold and sad
1999 Dodge Ram 3500 dually 5.9 Cummins Fleece tuned VGT-sold
1995 Kawasaki ZX1100E & still alive

Offline xtopfuel

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Re: 383/496 stroker dyno!
« Reply #17 on: May 20, 2017 - 05:42:21 am »
impressive numbers, its hard to pinpoint a percentage number on the HP losses, to many variables


Offline Tmb84

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Re: 383/496 stroker dyno!
« Reply #18 on: May 22, 2017 - 05:41:12 pm »
yes, Electric water pump and Electric fan, the "dynoman" said there was alot of converter slippage.. With manual he think there would be about 50-60 more hp to the Wheels..
70 Challenger 496 -Go mango
70 Charger 383 -Top banana

Offline 734406pk

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Re: 383/496 stroker dyno!
« Reply #19 on: May 22, 2017 - 09:39:11 pm »
yes, Electric water pump and Electric fan, the "dynoman" said there was alot of converter slippage.. With manual he think there would be about 50-60 more hp to the Wheels..

That's what I was thinking, what converter are you running? Nice build BTW!
1973 Challenger 440 6 pack auto 3.91 rear
2012 Dodge Ram 3500 dually 6.7 Cummins Fleece EFI Live
1973 Challenger 318 2bbl auto 2.73 rear 22.5 mpg RIP
1970 Challenger TA 340 4bbl auto-Sold and sad
1999 Dodge Ram 3500 dually 5.9 Cummins Fleece tuned VGT-sold
1995 Kawasaki ZX1100E & still alive

Offline Tmb84

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Re: 383/496 stroker dyno!
« Reply #20 on: May 22, 2017 - 10:11:24 pm »
thanks, all i know is 2500 stall speed, 10 3/4"  it spin the tires when shifting to 2nd gear at low speed  :cooldancing:

the drivetrain is matching number, if it wasnt i would do a 4spd swap
« Last Edit: May 22, 2017 - 10:14:16 pm by Tmb84 »
70 Challenger 496 -Go mango
70 Charger 383 -Top banana

Offline 734406pk

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Re: 383/496 stroker dyno!
« Reply #21 on: May 22, 2017 - 10:25:21 pm »
thanks, all i know is 2500 stall speed, 10 3/4"

the drivetrain is matching number, if it wasnt i would do a 4spd swap

No need for a four speed swap, but i would look into a better torque converter IMO. Many years ago there was a "Shotgun" converter method being used. They would take a stock converter and cut it open and increase the clearance between the turbine and the impeller, increasing the stall speed rpm to whatever you wanted, but the slippage was ridiculous, as expected. All heat and blowby on the top end. Check into it, you never know! :2cents:
1973 Challenger 440 6 pack auto 3.91 rear
2012 Dodge Ram 3500 dually 6.7 Cummins Fleece EFI Live
1973 Challenger 318 2bbl auto 2.73 rear 22.5 mpg RIP
1970 Challenger TA 340 4bbl auto-Sold and sad
1999 Dodge Ram 3500 dually 5.9 Cummins Fleece tuned VGT-sold
1995 Kawasaki ZX1100E & still alive