I need help on choosing a stall converter?!. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

tx512 · 08-20-2009, 05:43 PM

I need help on choosing a stall for my truck. I am not sure that i fully understand exactly how they work.

i am building a 350 (.30 over), dished pistons, with vortec heads, air gap intake, long tubes, and comp 268 cam. I have a 12 bolt rear sitting under my parts truck and a 10 bolt on my truck now. Right now I am running 31" bfg all terrains but will be going to street tires once these wear down if I dont sell them first.

Anyhow my question is, is a 2800 stall a good choice or what would you guys recommend? I have a guy that wants to trade me the 2800 for something.
Thanks in advance!!!

tx512 · 08-20-2009, 05:46 PM

Its going in a 81 swb

cobb · 08-20-2009, 07:18 PM

What are your plans for the truck? Wanting to race, street, or off road? Might help some people answer you better

AirMale · 08-20-2009, 07:50 PM

call ATI and give them all the specs:
h.p.
cam
trans.
gear
rear tire size
purpose

Marv D · 08-20-2009, 08:53 PM

agreed, the convertor companies will work hard to help you select a convertor for your specific combination. It's kind of not fair to use their expertise and work then go to a shelf stock convertor from Jeggs or Slummit. But. we all have to work to estimate / bid projects that we may or may not get.

All that aside,, I would suggest you stay away from the used convertor unless you know FOR A FACT that the trans it was in is a perfectly working trans. If the trans went away it filled the convertor with trach,, that you do NOT want in your trans.

OK, a from the hip,, a 268H cam is a pretty mild cam. Sounds like your going to have fairly low compression, a 2800 convertor ought to give you 1800-2000 foor brake stall on the street. It will be a help to get the heavy truck moving,, assuming traction holds. So yes,, a 2500-2800 convertor appears to be a reasonable choice. Be SURE and add a external trans oil cooler also, The stock in-radiator cooler is simply NOT enough for the street and much stall at all. Besides, a trans oil cooler is cheap, and great insurance for any trans.

tx512 · 08-20-2009, 09:03 PM

this will be a street truck probably no strip.

Rodms · 08-20-2009, 11:52 PM

tx if I were you ,not hurting any feelings hopefully,I would call Kenny at PTC and tell him your build an he will build for you,just my opinion.Good luck!

shortbed70 · 08-31-2009, 06:45 PM

I have about the same motor but little bigger cam and motor 350 (.060) 361 and I have a 25-2800 and with my 3.73 and 700r4 trans it works really well on the street. From a dead stop and stand on it the rpm's will jump to 2500 and break the tires loose...On the foot brake I can get a little over 2500 before it wants to push through the brakes.

5.7L JWL · 09-01-2009, 07:41 PM

check out www.converter.com it FULLY EXPLAINS HOW THEY WORK AND HOW TO DETERMINE THE STALL OF YOUR CURRENT CONVERTER in the FAQ section.

Another good site is www.transmissioncenter.net.

Jay

08-20-2009, 05:43 PM	#1
tx512 Registered User Join Date: Apr 2009 Location: ATX area Posts: 54	I need help on choosing a stall converter?!. I need help on choosing a stall for my truck. I am not sure that i fully understand exactly how they work. i am building a 350 (.30 over), dished pistons, with vortec heads, air gap intake, long tubes, and comp 268 cam. I have a 12 bolt rear sitting under my parts truck and a 10 bolt on my truck now. Right now I am running 31" bfg all terrains but will be going to street tires once these wear down if I dont sell them first. Anyhow my question is, is a 2800 stall a good choice or what would you guys recommend? I have a guy that wants to trade me the 2800 for something. Thanks in advance!!!

08-20-2009, 05:46 PM	#2
tx512 Registered User Join Date: Apr 2009 Location: ATX area Posts: 54	Re: I need help on choosing a stall converter?!. Its going in a 81 swb

08-20-2009, 07:18 PM	#3
cobb Registered User Join Date: Aug 2009 Location: Russellville,AR Posts: 52	Re: I need help on choosing a stall converter?!. What are your plans for the truck? Wanting to race, street, or off road? Might help some people answer you better

08-20-2009, 07:50 PM	#4
AirMale Senior Member Join Date: Jan 2003 Location: Atlantic City, NJ Posts: 1,073	Re: I need help on choosing a stall converter?!. call ATI and give them all the specs: h.p. cam trans. gear rear tire size purpose __________________ 86 SWB 9.0 LITER T-400-OD 4.11 eaton-4/5 drop Best 1/4 12.51 @112mph no traction

08-20-2009, 08:53 PM	#5
Marv D Registered Truck Offender Join Date: May 2008 Location: hells training ground (aka Ariz) Posts: 3,118	Re: I need help on choosing a stall converter?!. agreed, the convertor companies will work hard to help you select a convertor for your specific combination. It's kind of not fair to use their expertise and work then go to a shelf stock convertor from Jeggs or Slummit. But. we all have to work to estimate / bid projects that we may or may not get. All that aside,, I would suggest you stay away from the used convertor unless you know FOR A FACT that the trans it was in is a perfectly working trans. If the trans went away it filled the convertor with trach,, that you do NOT want in your trans. OK, a from the hip,, a 268H cam is a pretty mild cam. Sounds like your going to have fairly low compression, a 2800 convertor ought to give you 1800-2000 foor brake stall on the street. It will be a help to get the heavy truck moving,, assuming traction holds. So yes,, a 2500-2800 convertor appears to be a reasonable choice. Be SURE and add a external trans oil cooler also, The stock in-radiator cooler is simply NOT enough for the street and much stall at all. Besides, a trans oil cooler is cheap, and great insurance for any trans. __________________ Still playin with trucks, even at my age! When you're dead, it's only a problem for the people around you, because you don't know you're dead. .....It's kinda the same when your STUPID. I just did my taxes and reviewed my SS statement. Thanks to the current administration it looks like I will only have to work till noon on the day of my funeral.

08-20-2009, 09:03 PM	#6
tx512 Registered User Join Date: Apr 2009 Location: ATX area Posts: 54	Re: I need help on choosing a stall converter?!. this will be a street truck probably no strip.

08-20-2009, 11:52 PM	#7
Rodms Registered User Join Date: Jul 2008 Location: Olive Branch,Mississippi Posts: 347	Re: I need help on choosing a stall converter?!. tx if I were you ,not hurting any feelings hopefully,I would call Kenny at PTC and tell him your build an he will build for you,just my opinion.Good luck! __________________ Built chevy tuff!

08-31-2009, 06:45 PM	#8
shortbed70 Registered User Join Date: Mar 2002 Location: Forney TX Posts: 4,512	Re: I need help on choosing a stall converter?!. I have about the same motor but little bigger cam and motor 350 (.060) 361 and I have a 25-2800 and with my 3.73 and 700r4 trans it works really well on the street. From a dead stop and stand on it the rpm's will jump to 2500 and break the tires loose...On the foot brake I can get a little over 2500 before it wants to push through the brakes. __________________ Troy 1965 Chevy Bagged,361 sbc,voodoo cam,1.5 full roller rockers,patriot 185cc vortec heads 2.02-1.60,vortec weiand polished intake,demon carb my truckhttp://67-72chevytrucks.com/vboard/s...d.php?t=332884 Big Red Dog build http://67-72chevytrucks.com/vboard/s...d.php?t=572274

09-01-2009, 07:41 PM	#9
5.7L JWL Registered User Join Date: Dec 2006 Location: Atlanta Posts: 96	Re: I need help on choosing a stall converter?!. check out www.converter.com it FULLY EXPLAINS HOW THEY WORK AND HOW TO DETERMINE THE STALL OF YOUR CURRENT CONVERTER in the FAQ section. Another good site is www.transmissioncenter.net. Jay __________________ '98 C-1500 ECSB 5.7L Edelbrock shorty headers Ceramic, Stage 8 locking header bolts, Magnaflow S/S y-pipe w/converters, Magnaflow S/S Cat-Back Exhaust (DI 2.5" / SO 3.5" w/ 4" Tip.) Synthetic Fluids throughout. Polished TB with Blade removed, ASP Pullies, Performance Distributors "Vortec Firepower" Ign. Kit, BlackBearPerformance Tuned PCM '84 Kawasaki KX-80 "Mint" Last edited by 5.7L JWL; 09-01-2009 at 07:43 PM.

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