What stall do i need?

thequickster · Jul 22, 2021

I have a 67 Coronet and im looking to get higher stall converter but im not sure what rpm to get or what brands to look at or stay away from. Car is street driven but I plan on taking it to the strip.
Specs - 440 .30 over
- aluminum 440 source cylinder heads
- performer rpm intake, holley 750 dp
- 10.5 to 1
-727 trans
-3.73 rear end with an auburn sure grip
-275-60-15 rear tire
Heres a picture of the cam specs
Thanks -thequickster

sabre67 · Jul 22, 2021

watching

BeepBeepRR · Jul 22, 2021

Found this on Summit that's the exact same grind as this Comp XE cam.

COMP Cams 21-224-4 camshaft recommends the use of a torque converter with a stall speed of 2,200 or higher.

https://www.summitracing.com/parts/cca-21-224-4

Guy in the comments section used a 2400 stall.

His comment:
installed this cam in a 440 with Stealth aluminum heads, an Edelbrock Performer RPM cam and a 750 cfm Holley. The engine is in my 70 Challenger R/T with a 727, a 3.55 rear gear and a 2400 rpm stall converter. It has power from idle to 6000 rpms! The idle is lopey but not horrible. The cam pulls hard from any where you punch the throttle and runs down the highway smooth. I am really impressed since it isn't all that radical of a cam. I haven't made it to the drag strip yet but I'm confident with good traction a high 11 second E.T. is in the waiting. For a street car this is a great choice of cam, especially if you like to cruise with the family buckled in on a Saturday night.

MoparMur · Jul 23, 2021

You don't mention what stall you presently have (stock, around 1800-2000 I presume?). If it's just a fun street car with the odd blast down the track, I'd jump to a 2800-3000 stall. You will notice a huge difference. Run a good cooler and monitor the fluid condition, and I think you'd have a winner there. I honestly can't in good conscience pick one manufacturer over another. Of all the converters I've has through 40 years of goofing around on this stuff I've never had a failure from any. My son went from a stock stall to a whatever-brand 3000 stall in his 440-powered '67 Belvedere II, and it absolutely changed the car. So much more fun to drive.

BSB67 · Jul 23, 2021

thequickster said:
I have a 67 Coronet and im looking to get higher stall converter but im not sure what rpm to get or what brands to look at or stay away from. Car is street driven but I plan on taking it to the strip.
Specs - 440 .30 over
- aluminum 440 source cylinder heads
- performer rpm intake, holley 750 dp
- 10.5 to 1
-727 trans
-3.73 rear end with an auburn sure grip
-275-60-15 rear tire
Heres a picture of the cam specs
Thanks -thequickster

View attachment 1142337

I don't have a recommendation. I do have advice. Don't go cheap. You'll definately get what you pay for.

67charger383 · Jul 23, 2021

Using a 9in 5000 stall in my charger with a reverse manual valve body.

Going to have Racer Brown grind me a custom solid roller cam

33 IMP · Jul 23, 2021

For what it is worth, the owner of PTC is supposed to be a mopar lover.
The best converter i put in my stock 440 car (with rmvb and 4,10s) was a stock 340 converter. It stalled around 3000.
You have good gear in the back, and no lockup, so you ciuld use more converter than a 3.23 or an overdrive car (you dont want the car going down the highway with the converter slipping.) If it were me, i would try a tight nine inch, but i would definately talk to the experts at a quality converter company or three. And the more GOOD info you give them about your car and your use of it, the better rec you will get.
(And "dont cheap out" is excellent advice.)

black64 · Jul 23, 2021

Cam manufacturer usually recommend stahl and cfm requirements and also rear axle ratios. I ran Lunati cam with similar cam specs in two of my cars and 2800 stahl really worked out nice for me.

Master Gunner · Jul 23, 2021

Turbo Action was sold by Direct Connection for years, not exactly cheap, but a very good converter. I've got a 17805st in my runner, 440 6bbl, 3.91 really woke up the car. As mentioned before, a looser converter generates heat so get a good cooler.

Mark

Nate S · Jul 23, 2021

A factory 11" would do the trick here nicely. Something from a 383 4bbl. Stall is around 2500 depending on incoming torque. Probably find a good one for less than an aftermarket.

thequickster · Jul 23, 2021

I forgot to mention I do have a trans cooler already and im not sure of the current stall rpm , I was just told it was a stock style converter. An older gentleman that has helped me sort some problems on my car before recommended a 3000 rpm stall. Im looking to get a better launch on the car.
-thequickster

beanhead · Jul 23, 2021

Man....I'm definitely all for getting a custom spec'd coverter....but I ran a near identical combo to yours--same cam, gearing, tire etc-- and the off-the-shelf B&M Holeshot 2400 worked great.

justcruisin · Jul 23, 2021

The B&M holeshot 2400 is an 11" converter, it is OK, it is a bit mushy down low, it has around 8% slip on flat ground in my 4150lb Charger at 65mph @ 2700rpm and will flash to 3200 rpm against the eddy headed 10.2:1 448ci in the car. Probably a stock 11" would be about the same. I did upgrade the 5/16 pads to 7/16 bolt pads. I would be talking to a reputable shop if I was to get another and have them build me one for my specific application. A miss matched converter is the worst thing to put on your car, worth a little extra to get right.

496 polara · Jul 24, 2021

You already will make a lot of low end torque so you don't "need" a lot of stall. A typical 11" converter in the 2600-2800 rpm range will work fine. If you want more track oriented results and can put it to the ground a 10" or even a 9.5" with 3000 stall is plenty for your torque band IMO. Efficiency is key.

I have always run 11" converters on the street as less stall is more fun on the street than high stall IMO. I could have been quicker at the track but spend a lot more time on the street.

I would not be afraid of any major brand like Turbo Action,PTC, etc.

What stall do i need?

thequickster

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sabre67

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BeepBeepRR

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MoparMur

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BSB67

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67charger383

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33 IMP

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black64

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Master Gunner

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Nate S

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thequickster

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beanhead

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justcruisin

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496 polara

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