Stall converter and shift kit? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

lukecp · 07-07-2002, 10:42 PM

Well, my truck will be needing a new tranny soon, and i haven't decided on either rebuilding my TH350, or spending more money for a fresh 700R4. If i do the TH350, i was thinking of adding a mild tourqe converter with a little more stall speed than stock. My 350 is pretty mild, the cam has 204/214 duration, .443/.444 lift, and around 270 degrees of duration. The rest of the motor is pretty much stock, except for headers, a edelbrock intake and carb, and HEI. I have a 3.07:1 open rearend. The engine feels really "tourquey" just about anywhere between 2200 and 3000 RPM's The stall converter i was looking at is either a TCI Sizzler, or Saturday Nite Special. It dosen't say what the stall speed is for the Sizzler, but it says the Saturday Nite Special is around 2000 RPM's. If i get a stall converter, and power-brake the engine to around the stall speed of the converter, before the tires start to squeal, will it give me a significant improvement on my 1/4 mile times? Will the stall converter slip more than stock when i am driving around town, or on the highway, causing me to get worse MPG?
With either tranny, i want to get a shift kit. Which would be better for me, a RV-Heavy Duty shift kit, or a Street/Strip shift kit? I would like the truck to shift hard, with a nice bark or the tires in the 1-2 shift when i mash the throttle. If i get the Street/Strip shift kit, will it cause damage to my driveline?

Longhorn Man · 07-07-2002, 10:48 PM

With a 3.07 gears, it is kinda hard to get a high stall verter. If you have a tach, look at it as you drive at certian speeds. When ever you are under 2000 rpm's, it'd be slipping. Being that I am running a 1900 in mine, that 2000 stall is as high as you'd really want to go IMO. Your free way cruise speed should be about 2500-ish, right?
On the shift kit, I don't think you'd like the full race setting. Go with the RV one instead. It won't break your neck, spill your Mtn Dew, attract cops...ect.

lukecp · 07-07-2002, 11:00 PM

Yep, my crusie speed at 65 is almost exactly 2500 RPM's, and that is about the speed i drive on every highway. Well, if i get the stall converter, i think i will get the "Sizzler" one then. I have always wanted a automatic tranny that will bark the tires when it shifts, and i mean at like 4000rpm shifts, not just driving around town. Would the RV do that? I really dont want it to smoke them off, just a nice little chirp

.

lukecp · 07-07-2002, 11:47 PM

ttt

Sinister · 07-08-2002, 02:14 AM

i'm in the same boat transmission wise...
http://67-72chevytrucks.com/vboard/s...threadid=17715
my th350 is living on borrowed time...
i'm thinking of getting a tranny to rebuild...
looking at TCI Master Racing Overhaul kit
and their Trans-Scat Valve Body (shift) kit...
the overhaul kit (with heavy duty clutches) goes for $190, and the shift kit is $45...
i'm gonna swap out the torque converter while i'm at it, but i'll probaly just get an rv one...

MarineNav · 07-08-2002, 09:29 AM

I would go with the street/strip setting, it will give nice firm shifts and allow you to shift manually up and down no matter the RPM.
It's a great upgrade to your tranny IMO

07-07-2002, 10:42 PM	#1
lukecp Formerly yellow72custom Join Date: May 2001 Location: Austin, TX Posts: 7,531	Stall converter and shift kit? Well, my truck will be needing a new tranny soon, and i haven't decided on either rebuilding my TH350, or spending more money for a fresh 700R4. If i do the TH350, i was thinking of adding a mild tourqe converter with a little more stall speed than stock. My 350 is pretty mild, the cam has 204/214 duration, .443/.444 lift, and around 270 degrees of duration. The rest of the motor is pretty much stock, except for headers, a edelbrock intake and carb, and HEI. I have a 3.07:1 open rearend. The engine feels really "tourquey" just about anywhere between 2200 and 3000 RPM's The stall converter i was looking at is either a TCI Sizzler, or Saturday Nite Special. It dosen't say what the stall speed is for the Sizzler, but it says the Saturday Nite Special is around 2000 RPM's. If i get a stall converter, and power-brake the engine to around the stall speed of the converter, before the tires start to squeal, will it give me a significant improvement on my 1/4 mile times? Will the stall converter slip more than stock when i am driving around town, or on the highway, causing me to get worse MPG? With either tranny, i want to get a shift kit. Which would be better for me, a RV-Heavy Duty shift kit, or a Street/Strip shift kit? I would like the truck to shift hard, with a nice bark or the tires in the 1-2 shift when i mash the throttle. If i get the Street/Strip shift kit, will it cause damage to my driveline? __________________ '72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg Last edited by lukecp; 07-07-2002 at 10:44 PM.

07-07-2002, 11:00 PM	#3
lukecp Formerly yellow72custom Join Date: May 2001 Location: Austin, TX Posts: 7,531	Yep, my crusie speed at 65 is almost exactly 2500 RPM's, and that is about the speed i drive on every highway. Well, if i get the stall converter, i think i will get the "Sizzler" one then. I have always wanted a automatic tranny that will bark the tires when it shifts, and i mean at like 4000rpm shifts, not just driving around town. Would the RV do that? I really dont want it to smoke them off, just a nice little chirp . __________________ '72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg

07-07-2002, 11:47 PM	#4
lukecp Formerly yellow72custom Join Date: May 2001 Location: Austin, TX Posts: 7,531	ttt __________________ '72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg

07-08-2002, 02:14 AM	#5
Sinister Between Trucks... Join Date: Mar 2002 Location: Los Angeles, CA. Posts: 3,830	i'm in the same boat transmission wise... http://67-72chevytrucks.com/vboard/s...threadid=17715 my th350 is living on borrowed time... i'm thinking of getting a tranny to rebuild... looking at TCI Master Racing Overhaul kit and their Trans-Scat Valve Body (shift) kit... the overhaul kit (with heavy duty clutches) goes for $190, and the shift kit is $45... i'm gonna swap out the torque converter while i'm at it, but i'll probaly just get an rv one... __________________ Beat it to fit, Paint it to match...

07-08-2002, 09:29 AM	#6
MarineNav Official Beaver Inspector Join Date: Sep 2001 Location: MCAS Cherry Point, NC Posts: 119	I would go with the street/strip setting, it will give nice firm shifts and allow you to shift manually up and down no matter the RPM. It's a great upgrade to your tranny IMO __________________ 70' C-10SWB beater with a heater, one day haulin a$$ with class

07-07-2002, 10:48 PM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	With a 3.07 gears, it is kinda hard to get a high stall verter. If you have a tach, look at it as you drive at certian speeds. When ever you are under 2000 rpm's, it'd be slipping. Being that I am running a 1900 in mine, that 2000 stall is as high as you'd really want to go IMO. Your free way cruise speed should be about 2500-ish, right? On the shift kit, I don't think you'd like the full race setting. Go with the RV one instead. It won't break your neck, spill your Mtn Dew, attract cops...ect.

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