How to select the RIGHT stall speed Torque converter!

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A quick guide on torque converter stall speed selection. We will do a video on how horsepower can change the stall of a converter soon!
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[@DK-nv9zu]

Good explanation for people that are new to torque converters. Including what stock and towing vehicles might use helps establish baseline information. Most other torque converter videos just dive right into high horsepower and racing explanations without talking about the more basic stuff.

[@CoastalRacecraft]

Appreciate that thank you. This is definitely tip of the iceberg on converter talk but I feel it’s the most relatable info.

[@275Vet-RLTW]

Best explanation for dummies I've seen

[@CoastalRacecraft]

Thank you!

[@LSCHEVYRYDER254]

great video subbed

[@thedobermangang3503]

very good video my brother

[@proskills2168]

Interesting...custom converter advice. 👍👍

[@CoastalRacecraft]

When the budget allows, a custom converter is always the way to go!

[@crudeprelude]

Great explanation on such a mysterious part of the drivetrain. Just did a top end rebuild on a stock 350 from 1995. Stock th350. Upgraded to a comp cam xe274h-10, double roller timing chain, new Chevy performance lifters, resurfaced vortec heads with new valves, beehive springs, 1:5 stock rockers, stock push rods, edelbrock performer rpm intake, 650 cfm Holley carb. Feels strong at higher rpms but is a dog off the line. Granted I have 2.73s in the back and plan on upgrading to 3.73s. Having a hard time figuring out what stall to get, 2500, 2800, 3000? No idea.

[@flinch622]

Comp recommends 2200+ in their catalog. Maybe start with 2400 and see if that suits you? As for gears... do the math for expected speeds [in each gear for the street] vs tire diameter to get at engine rpm for common speeds- I like being 200 or so past stall speed on the freeway, some people disagree. Numbers might work with 3.55 - the th350 low gear ratio [oem=2.52] leaves more room than a th400 does. But you didn't mention heads or pistons? That intake closes at 64 abdc... Assuming 5.7" rods. 6cc flat tops with 67cc chambers puts you just under 9.8:1, and 7cc flat tops with 64cc chambers gets you 10:1. Both will run on pump gas, but option 2 will want to stay away from lowest octane -may or may not get away with 89 depending on tune and temps.

[@stoner4]

good ,thank you for that info i got a ford explorer, my torque convertor went bad, heard metal inside, like bolts flying around!! So i was concerned about what i was looking at with stall speed, after i watched some videos on the right convertor!! great,, so for towing if i do tow, i'll be after a maybe mid stall speed instead of a high, because i'm not planning tro race thisa vehilcle,lolol ,, the thing was acting weird, and would get gong if i'd rev it up but lower speeds it wouldnt' pull it just happened,, pulled the trans, servos were hard and brittle, that was it, had a lot of metal i n the pan though!! when i went to install my convertor, i heard this mess!! wow!! got this truck used, it ran good for a while!!

[@Kokaiinum1]

wow, that was pure nonsense.... great man!

[@DM-qp7do]

⬅️ I bought this 07 Classic wrecked with a stock L59 5.3 with a 4l70e, its not my daily driver and I just want it for a tire smoker for fun. I've never had a stall but the 1-2 shift is messed up so I figured if the trans has to come out I may as well stuff a 3000 or 3500 stall in it. My question is, how much would it help? I do plan on doing gears eventually but the trans HAS to be fixed soon so I thought I may as well do it now. Thanks.

[@cesarpelaez1720]

Hello there I have a question for you I have 94 jeep cherokee lifted with 35 tires I want to know if you can help me out with how to find better torque converter

[@danieleyles]

I have a 355 sbc Isky 547-b camshaft 425+ hp. 10.1 compression In a 55 Buick 3800 lb car th350 with 3:73 gears in the rear what size stall converter would you suggest. Thanks

[@BuiltByLondonRacing]

Good Sruff

[@thedobermangang3503]

i got a question for u ..i got a 1990 k5 blazer 700r trans 2000 to 2400 torque converter in it and im thinking about buying this race motor it has 12.5 to 1 sbc 355 030 over with elgin e-1090p solid flat tappet cam with scorpion 1.6 rockers for total lift of 573 intake 594 exhust can i use the torque converter i have on this engine,,..i no i got alot of things to change because it is a tbi fuel injection

[@brandonreed5634]

I’ve been thinking of doing a 3000 stall in my 04 Silverado, 4.8 getting a truck Norris cam and 150hp nitrous setup.

[@CoastalRacecraft]

That will definitely wake it up!

[@brandonreed5634]

@@CoastalRacecraft I hope so!

[@gmcsierraz7173]

What would you recommended for a 01 5.3 212 218 112lsa cam rear 3.73 gears

[@micahobaca]

What stall speed for a positive displacement supercharger at 420 hp 551 tq 3.73 gears?

[@olveramelinda]

So for a PD stall would be lower than 3k ?

[@tonyamatucci1999]

Good video. I’m putting a 2004r in my 75 corvette. Right now I have a th400 with a B&M 28-3200 stall. Wondering if I should stick with that rpm TC? Non lockup. I track the car occasionally. It does 8.2’s in the 1/8 mile. About 350 hp, 3.70 rear. Thanks

[@CoastalRacecraft]

That’s a great balance for a car that sees a lot of street miles

[@WyoCutlass71]

Ok, I have been looking for an explanation of what would happen if you don’t have enough converter. I just built a 350 Olds with a cam that has Duration @ .050 (Int/Exh): 241/249 and a 112 lobe separation angle. I have a 2500 stall converter in it and 3.50 gears. What will happen with so little converter? The car is a full interior street car

[@KingJT80]

that was a lot of cam you had. maybe the 227/233 cam wiht those 3.50 gears and 2500 stall would have been right on the money.

[@aaronnavarro6083]

Coild I upgrade the transmision or torque c. To my pontiac grand prix supercharged. Mod.2000

[@CoastalRacecraft]

I’m not sure what the aftermarket support is for that platform but possibly!

[@christiantownsend880]

What would you recommend for a 2008 c6

[@CoastalRacecraft]

It’ll need to be built to the hp/weight etc.. but if it’s a stock engine with stock cam I would do 3800-4200. The 4200 will be a little looser daily driving until the converter locks up but the ET gain is worth it. If you have a large cam that makes power in a higher band then it’ll need to be closer to 4600 all this assuming it’s naturally aspirated.

[@rotsbelramos7685]

I have a single cab 6.0 with a 236 238 cam it's locked big time high rpms feels like I'm driving on second ⚙️ gear all the time what cam do you recommend Mr #Coastal

[@jerrynelson2985]

I have a 400 hp 383 stroke sbc.big cam.dont know the specs.350 th trans.20 inch wheels on the rear.chevy pickup rear end.car weights 1500 lbs.any idea what would be a good stall converter to start with.thanks for any help

[@CoastalRacecraft]

Assuming it’s a street car and just guessing where the cam makes it’s power, 3000-3600 stall. If it’s more of a racecar and the cam makes most of its power up top, you’ll want something higher.

[@Hwyhogg]

Towing gets lower stall

[@rotsbelramos7685]

❤❤❤❤

[@rotsbelramos7685]

Hey coastal I have a question ❓ my truck has a 236 248 cam my stall shutters shakes and stays on 4000 to 7500rpms when I'm going over 60 my converter isn't locking up 🔒 what size of stall converter do I need ? It feels like I'm on second ⚙️ gear all the time

[@CoastalRacecraft]

Could possibly have a transmission or valvebody related issue if the lockup clutch pack isn’t burnt up.