Converter for 10sec pump gas 408 stroker
#1346410
12/05/12 02:55 PM
12/05/12 02:55 PM
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Joined: Apr 2009
Posts: 3,415
Toronto
mshred
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Toronto
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Just wondering what size and stall converters everyone is using behind their 408's? Obviously it is combo dependent (if you don't mind sharing that, it would be great too!) but im just trying to get an idea if my pumpgas build would be better optimized with an 8" or if something like a 9.5" would work as well. I want to spray this thing as well on the odd occasion with a 100-150 shot, but I know it is hard to get the best of both worlds.
Obviously I will call a converter manufacturer and get them to spec me what they think, but just curious to hear what others are using and what times they are running. 408, 94 pump gas motor, solid cam, 4.10 gear, 28" tire, 904, 3400lb car
Thanks!
Matthew
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Re: Converter for 10sec pump gas 408 stroker
[Re: jst19600]
#1346413
12/05/12 04:02 PM
12/05/12 04:02 PM
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Toronto
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Quote:
I have a Hughes ProComp4500 in my 72 dart 408.I run a powerglide,same gear and tire as you.Car only weighs 2800 with me in it and its run a best of 10.61.I absolutely love this converter and i gained at leat three tenths and 3 mph over my other converter.
What size is that converter?
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Re: Converter for 10sec pump gas 408 stroker
[Re: mshred]
#1346414
12/05/12 04:36 PM
12/05/12 04:36 PM
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Joined: Feb 2011
Posts: 1,454
Glendora Ca.
Just-a-dart
pro stock
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pro stock
Joined: Feb 2011
Posts: 1,454
Glendora Ca.
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Mine is a little bigger at 427ci. Changed from a 9.5 edge that flashed to 5600 to a continental 8" that flashes 5600. Lost about 10lbs.! Car picked up a little more then a .10th now 10.22 @ 130. in 2200' air.
New 8" is still loose at about 9.2%, will come out soon to get tightened up. The 8" will cost more but for me it's the way to go.
"Just a Bracket car dressed up like a streetcar"
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Re: Converter for 10sec pump gas 408 stroker
[Re: justinp61]
#1346416
12/05/12 06:03 PM
12/05/12 06:03 PM
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Joined: Jan 2003
Posts: 6,266
Renton Washington
Triple Threat
master
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master
Joined: Jan 2003
Posts: 6,266
Renton Washington
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390"
3500#
8" PTC
4800 flash
1.47 60 foot
10.75 @ 123
-Dustin
67 Dart, 9 second, 392" G3 Hemi
68 Barracuda 340 F/SA
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Re: Converter for 10sec pump gas 408 stroker
[Re: justinp61]
#1346418
12/05/12 09:05 PM
12/05/12 09:05 PM
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Joined: Apr 2009
Posts: 3,415
Toronto
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Quote:
Pump gas 408, 3260#, 4.10 gears, 28" tire, 727, I run a 9.5" Edge that flashes 5000. Best 60' 1.38, 1.40-1 in the heat on radials.
What e/t's? A 9.5" would be nice if it could get me where I wanted to be
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Re: Converter for 10sec pump gas 408 stroker
[Re: Just-a-dart]
#1346419
12/05/12 09:07 PM
12/05/12 09:07 PM
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Joined: Apr 2009
Posts: 3,415
Toronto
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Quote:
Mine is a little bigger at 427ci. Changed from a 9.5 edge that flashed to 5600 to a continental 8" that flashes 5600. Lost about 10lbs.! Car picked up a little more then a .10th now 10.22 @ 130. in 2200' air.
New 8" is still loose at about 9.2%, will come out soon to get tightened up. The 8" will cost more but for me it's the way to go.
Sounds promising! I know different manufacturers will spec different sizes obviously depending on combo and intended usage, just trying to get ideas from everyone here as to what works for them though.
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Re: Converter for 10sec pump gas 408 stroker
[Re: mopar dave]
#1346420
12/05/12 09:13 PM
12/05/12 09:13 PM
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Joined: Apr 2009
Posts: 3,415
Toronto
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Quote:
i use a an 8" 5400 stall.
Any details on the combo? 
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Re: Converter for 10sec pump gas 408 stroker
[Re: mshred]
#1346422
12/06/12 12:33 AM
12/06/12 12:33 AM
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Joined: Oct 2003
Posts: 11,684
W. Kentucky
justinp61
I Live Here
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I Live Here
Joined: Oct 2003
Posts: 11,684
W. Kentucky
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Quote:
Quote:
Pump gas 408, 3260#, 4.10 gears, 28" tire, 727, I run a 9.5" Edge that flashes 5000. Best 60' 1.38, 1.40-1 in the heat on radials.
What e/t's? A 9.5" would be nice if it could get me where I wanted to be
It has ran 6.57 (1/8) in good air several times and will go 6.69-70 in street trim in the heat. I need to buy an o2 meter and tune the carb, it's pig rich.
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Re: Converter for 10sec pump gas 408 stroker
[Re: w2stroker]
#1346425
12/06/12 10:39 AM
12/06/12 10:39 AM
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Joined: Nov 2004
Posts: 226
lino lakes,MN
onebaddakota
enthusiast
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enthusiast
Joined: Nov 2004
Posts: 226
lino lakes,MN
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I use an 8" ATI treemaster 4800 stall. Times in sig. Calculated slip is 5.8%. It's mostly a street car. You can run an 8" on the street. Just not a cheap one.I think you'd be faster with an 8.
10.56 at 125.6, with a 1.43 60 ft.
E85, Hyd. Roller 410 magnum,full exhaust, 3500 race weight.
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Re: Converter for 10sec pump gas 408 stroker
[Re: justinp61]
#1346426
12/06/12 02:35 PM
12/06/12 02:35 PM
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Joined: Oct 2007
Posts: 3,978
Hilltown Pa
1967dartgt
master
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master
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Posts: 3,978
Hilltown Pa
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I used to run a Frank Lupo's Dynamic 9.5 inch conv 4200 stall. It would go 1.42 on motor and 1.37 on a 175 shot. This was with a 385" with a 904 low gear set and 4.56 gears with a 29/10 QTP.The car would go 10.70s on motor and 9.70s on spray. Pump gas with edelbrock RPM heads.
Last edited by 1967DartGT; 12/06/12 02:38 PM.
Brett Miller W9 cnc'd heads
STR Chassis fabraction
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Re: Converter for 10sec pump gas 408 stroker
[Re: jst19600]
#1346427
12/06/12 02:41 PM
12/06/12 02:41 PM
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Joined: Oct 2003
Posts: 1,409
Ont. Canada
10.90 Racer
super street
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super street
Joined: Oct 2003
Posts: 1,409
Ont. Canada
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Quote:
I have a Hughes ProComp4500 in my 72 dart 408.I run a powerglide,same gear and tire as you.Car only weighs 2800 with me in it and its run a best of 10.61.I absolutely love this converter and i gained at leat three tenths and 3 mph over my other converter.
The most important question, you might want to ask is....... What converter and what kind of slippage numbers do you get thru the traps....... 
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Re: Converter for 10sec pump gas 408 stroker
[Re: 10.90 Racer]
#1346428
12/06/12 07:21 PM
12/06/12 07:21 PM
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Joined: Oct 2009
Posts: 1,267
North, Alabama
D-50
pro stock
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pro stock
Joined: Oct 2009
Posts: 1,267
North, Alabama
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I run a PTC 8in converter , but it is not a 408, its a pump gas 394ci. I was running 5.13 gears but I broke the rear at the last race.All I have is 3.50 gears I am going to try.Hope the trans does not get to hot with the high gears.
1.33 60 ft,6.21 at 110.59 in the 1/8, pump gas small block,2950lbs,drag radials,mufflers and driven to track ...
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Re: Converter for 10sec pump gas 408 stroker
[Re: 10.90 Racer]
#1346429
12/08/12 01:27 PM
12/08/12 01:27 PM
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Joined: Apr 2009
Posts: 3,415
Toronto
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Quote:
Quote:
I have a Hughes ProComp4500 in my 72 dart 408.I run a powerglide,same gear and tire as you.Car only weighs 2800 with me in it and its run a best of 10.61.I absolutely love this converter and i gained at leat three tenths and 3 mph over my other converter.
The most important question, you might want to ask is....... What converter and what kind of slippage numbers do you get thru the traps.......
That is definitely a good question Steve, lets throw that out there then too....Anybody care to share what slip they were seeing with their combos and the converter they used?
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