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| Transmission Talk Tech support for transmissions and torque converters from the experts |
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What converter to use with a 70GTQ ???
Right now, my 200R4/Vigilante 5-disc is good for 2700 rpm @ zero boost. Obviously the spoolup is slower than it should be...
I will be going to a TH400 very shortly... I wondered what convertor would be best for my combo... and how much $$$ it's 'gonna run me. I want to make this swap while my 200R4 and converter are still good... I'm afraid if I leave it in the car, it will be broken quickly and completely. ![]() Any ideas what my current 200R4/converter setup is worth ? (less than 2500 miles on it)
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'87 GN... RJC girdled 109, +.020 Diamond pistons, K1 rods, Cat crank, RJC alum pulleys, T/A heads, Champion intake,plenum and fuel rails, 1.55 TA rockers, 70mm Accufab, 214/214-.548/.548 Comp hyd roller, Comp 26120 beehives, 70GTQ, 83lb injectors, A1000 pump, MagnaFuel regulator, 15gal aluminum cell, Razors Alky kit, NOS 100hp nitrous system, GN1 FMIC, LS1 MAF & translator, TurboTweak 6.0 chip, Powerlogger, LM-1 Wideband O2, 3" THDP, ATR Pitbull exhaust, TH400 w/brake, 9.5" PTC, Dynotech 3.5" alum driveshaft.
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The 28" tires are here to stay... so MPH will need to be made with RPM or gear.
I'd be very happy to get into the 140's. I'm still on the fence about a solid roller... at least right now I can drive it pretty much anywhere with the hyd roller. Is anyone running 3.23's with a 28" tire ?
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'87 GN... RJC girdled 109, +.020 Diamond pistons, K1 rods, Cat crank, RJC alum pulleys, T/A heads, Champion intake,plenum and fuel rails, 1.55 TA rockers, 70mm Accufab, 214/214-.548/.548 Comp hyd roller, Comp 26120 beehives, 70GTQ, 83lb injectors, A1000 pump, MagnaFuel regulator, 15gal aluminum cell, Razors Alky kit, NOS 100hp nitrous system, GN1 FMIC, LS1 MAF & translator, TurboTweak 6.0 chip, Powerlogger, LM-1 Wideband O2, 3" THDP, ATR Pitbull exhaust, TH400 w/brake, 9.5" PTC, Dynotech 3.5" alum driveshaft.
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Contact Dusty, he will set you up with a properly spec'd 9.5" PTC unit. IMO I think the solid over hydr roller deal is over dramatized. Alot of people are under the assumption that a solid can't be used on the streets in our cars, but I have been running them for years with no issues, and I drive the car any and every chance I get when the weather is good. I set the lash once a year and last time I checked it, there was no reason to set it again, nothing moved. I think the biggest problem with most of the confusion is improper push rod selection/geometry that makes the rockers clang like a diesel motor.
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Mike Ricketts ![]() DLS ENGINE DEVELOPMENT 886 E 900N, Wheatfeild, IN, 46392 219-956-3653 HARTLINE PERFORMANCE 321-722-1563 My Track passes http://www.youtube.com/watch?v=mKEIyppgOr0 http://www.youtube.com/watch?v=6SqbYtfQn8c |
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As far as solid rollers are concerned, I've run them in so-called "street cars" but never drove them much on the street due to the insane spring pressures. I just (10 minutes ago) ordered a complete Beehive spring setup (26120's) for my car... I just don't trust the dual springs above 6000... There's a big Buick meet at Cecil in a week or two... so we'll see how the hyd roller does real soon.
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'87 GN... RJC girdled 109, +.020 Diamond pistons, K1 rods, Cat crank, RJC alum pulleys, T/A heads, Champion intake,plenum and fuel rails, 1.55 TA rockers, 70mm Accufab, 214/214-.548/.548 Comp hyd roller, Comp 26120 beehives, 70GTQ, 83lb injectors, A1000 pump, MagnaFuel regulator, 15gal aluminum cell, Razors Alky kit, NOS 100hp nitrous system, GN1 FMIC, LS1 MAF & translator, TurboTweak 6.0 chip, Powerlogger, LM-1 Wideband O2, 3" THDP, ATR Pitbull exhaust, TH400 w/brake, 9.5" PTC, Dynotech 3.5" alum driveshaft.
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i have a ptc from dusty...works great
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1987 GN 1986 GN 9.70 @ 2009 GS Nats with 109 block 2005 Brute Force 750 2004 Kawie 700 Prairie 10.30 in the 1/8th 2004.5 Duramax runs low 9's in the 1/8th 1989 TTA #1406 sold 1987 Limited Daily driver for sale 1984 GPZ 750 Turbo GSCA# 5705 Socialism is the Philosophy of Failure, the Creed of Ignorance and the Gospel of Envy, its inherent virtue is the equal sharing of misery - Winston Churchill . Amsoil dealer..ask me how: www.lube-direct.com/shandy/ There's no argument over the choice between peace and war, but there's only one guaranteed way you can have peace -- and you can have it in the next second -- surrender. ~ Ronald Reagan |
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