Its finally time to buy a torque converter for my 75 dart custom. This is the first time buying a torque converter and have a few questions. About the car. 1975 dodge dart custom four door, Motor 79 block with lightened cast crank rebalanced bottom end held together with arp rod and main bolts. 10.50 to 1 compression ratio, erson 280-270 .465 lift cam. Head has been ported and pollished and shaved for compression, home made long runner intake with 500 cfm edelbrock carb, home made hand built 3 into 1 headers. Transmission is a rebuilt 904 v8 internals with street strip shift kit. Rear axle is a 8.8 inch ford with 31 spline shafts 3.73 gears and factory traction lock limited slip. Rear tires are 27-11r17 drag radials. Car will be driven on street every now and than but mostly at the track and may see some spray in the future. Need some input on stall speed and size of converter. also brands price verse quallity and what do i really need to spend. Thanks cory

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75 dart custom, 225, >10.5-1, hurricane, 500holley, erson cam, 904, 8.8 ford 3.55 or 3.91 aussielocked, 17" steelies, and much more.

any info or help would be greatly accepted

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75 dart custom, 225, >10.5-1, hurricane, 500holley, erson cam, 904, 8.8 ford 3.55 or 3.91 aussielocked, 17" steelies, and much more.

Is this engine built already? Sounds like a lot of good work if so.

I would get a 3000 stall 9.5" or 10" converter from Midwest Converters or PTC or the guy in FL that Bren bought from (search site). This will let you use your engine's power and yet be very streetable. 3000 stall will act almost like stock until you stand on it...

Lou

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Home of Slant6-powered fun machines since 1988

FTI in DeLeon Springs Fl. 1-800-726-8358, http://www.fticonverters.com

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

thanks guys i really needed some help. just one more questing do i need anything special if i plan on using any spray?

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75 dart custom, 225, >10.5-1, hurricane, 500holley, erson cam, 904, 8.8 ford 3.55 or 3.91 aussielocked, 17" steelies, and much more.

You will need to tell the converter Manuf. you are using NOS and how much.
Frank

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Scrapple: Because a mind is a terrible thing to waste.
73 Duster - Race Car
66 Dart Wagon - DD
178" FED
82 D150
All Slant powered

If you launch the car on spray, any converter will stall higher then non spray.
You need to discuss all of this with the converter builder.
I had a converter built, and I specified spray. When I first tried it for testing without spray, I was not happy. My old conveter, which was for stock eliminator racing launched better, without spray. But when on spray the new converter was better then the old one on spray . A lot of racers do not launch on spray, it is turned on, someware down track, so you need to decide on that also. Don't lie to the converter guy, and don't guess. If you can't answer his question, tell him you don't know. Don't tell him you make 300 ft/lbs torque, when it is a new engine, that has never been fired up.

PS: my 170 engine on spray has 358 ft/lbs at 2750 rpm on a chassis dyno, and the converter stalls at 3,000 rpm.

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

thanks guys you have been a great help. i have no idea how much power or torque this motor is making. this is my first build. the motor is up and running and has been driven a few short trips but still working out some bugs. as of now im not sure about spray and if it is used it wont be off the line. im not to educated on spray is there any sites that could break it down for me? thanks again cory

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75 dart custom, 225, >10.5-1, hurricane, 500holley, erson cam, 904, 8.8 ford 3.55 or 3.91 aussielocked, 17" steelies, and much more.

Get the bugs worked out, then take the car to the track. Make a couple of runs, weight the car, and tell the converter people, this info. They will be able to get a close approx of the HP, and torque, and build the converter based on that.

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

well it sounds like you know what your talking about when it comes to spray. how much are you running? how do you have it set up? is there anything special you did to you motor or block and head to hold this type of spay.

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75 dart custom, 225, >10.5-1, hurricane, 500holley, erson cam, 904, 8.8 ford 3.55 or 3.91 aussielocked, 17" steelies, and much more.

Yup Charrlie and Slantzilla are our 2 resident experts when it comes to spray on the East Coast.
Im not sure who all sprays on the Left Coast.
Frank

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Scrapple: Because a mind is a terrible thing to waste.
73 Duster - Race Car
66 Dart Wagon - DD
178" FED
82 D150
All Slant powered

i just put a boss hog torque converter in my duster fairly radical build with nos and i put a 2800-3200 stall and was not happy. next week put a 3800-4200 stall in and what a differance. the thing is an animal. they also have a 3200-3600stall. if you want a good converter and cheap i would get one of these. i called midwest and they wanted 875 with shipping. my boss hog was like 380 or 450.
i would recommend you get either the 3200-3600 or the 3800-4200