Posted By: mshred
Converter for 10sec pump gas 408 stroker - 12/05/12 06:55 PM
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
Posted By: jst19600
Re: Converter for 10sec pump gas 408 stroker - 12/05/12 07:49 PM
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.
Posted By: mopar dave
Re: Converter for 10sec pump gas 408 stroker - 12/05/12 07:51 PM
i use a an 8" 5400 stall.
Posted By: Just-a-dart
Re: Converter for 10sec pump gas 408 stroker - 12/05/12 08:36 PM
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.
Posted By: justinp61
Re: Converter for 10sec pump gas 408 stroker - 12/05/12 09:47 PM
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.
Posted By: Triple Threat
Re: Converter for 10sec pump gas 408 stroker - 12/05/12 10:03 PM
390"
3500#
8" PTC
4800 flash
1.47 60 foot
10.75 @ 123
Posted By: w2stroker
Re: Converter for 10sec pump gas 408 stroker - 12/06/12 12:00 AM
i have a 9" ptc 4600 stall that was built for nitrous. only has 20 passes on it. non with spray. went 10.41 on motor alone. i'm looking to sell. pm me if you would like
Posted By: Darryls-Demon
Re: Converter for 10sec pump gas 408 stroker - 12/06/12 02:11 AM
408 pump gas 3.73s 3425lbs 904 with low gear set 9.5 dynamic that flashes to 4800, best 60ft so far is 1.55 on drag radials.
I really like the convertor because I can throw 3.23s in the car and go on a trip.
But I do think an 8 inch would work better,I have one in my other street car and it works great on the street.
Posted By: Wedgeman
Re: Converter for 10sec pump gas 408 stroker - 12/06/12 04:38 AM
Here is a 67 Barracuda 3200 lbs
408 with 4.30 gear
904 trans low gearset
30 in slicks, SS springs
8in converter 5000 stall
so far best 1.47sec 60'
10.65 1/4
Dan
Posted By: w2stroker
Re: Converter for 10sec pump gas 408 stroker - 12/06/12 02:23 PM
i'm sorry i missed in the original post that you use a 904. my converter is for a 727
Posted By: onebaddakota
Re: Converter for 10sec pump gas 408 stroker - 12/06/12 02:39 PM
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.
Posted By: 1967dartgt
Re: Converter for 10sec pump gas 408 stroker - 12/06/12 06:35 PM
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.
Posted By: D-50
Re: Converter for 10sec pump gas 408 stroker - 12/06/12 11:21 PM
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.
