Stock Stall speed for the 4R70W transmission. - Ford Mustang Forum
 
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post #1 of 7 (permalink) Old 06-18-2010 Thread Starter
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Stock Stall speed for the 4R70W transmission.

I thought since there's some misconception on what's a good stall speed to buy, I'd post up what the stock stall speed are for some common Ford cars. That way if you've even ridden or driven one, you can see that you shouldn't fear the stall converter. Your stock stall with fall in between the min and max numbers somewhere.

98-up Mustang GT....Minimum Stall speed-2324..... Max Stall Speed-2737
'98-up Crown Vic....Minimum Stall speed-2024...Max Stall Speed-2440
'99-up Police or handling package Crown Vic...Minimum Stall speed-2319...Max Stall Speed-2750
'99-up 4.6L F150...Minimum Stall speed-2145...Max Stall Speed-2505
'03 Marauder/03-04 Mach 1...Minimum Stall speed-2555...Max Stall Speed-3011

Thanks goes to Johnny Langton for the numbers. If you don't know who Johnny is, you're a newb to the 4.6 world...... He was the 1st guy to get an NPI engine into the 12's naturally aspirated.....And that NPI engine was in a 4000lb Thunderbird. He's the guy the NPI guys have to thank for figuring out PI cams in the NPI heads, figuring out that the PI intake would work on the NPI heads with just some silicone, and figured out what it took to put cams larger than .550 lift into the NPI heads, 1st to figure out that ported NPI heads actually flowed better than ported PI heads. If it wasn't for him, there would probably be no fast NPI cars. And he did all of this in a Thunderbird.


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[email protected] naturally aspirated on a bone stock 2V longblock

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Pushrods and Powerglide Coming Soon

If it weren't for physics and law enforcement, I'd be unstoppable.
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post #2 of 7 (permalink) Old 06-18-2010 Thread Starter
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An added note:

Don't forget that converters are rated at flash stall speed, and you can't replicate the flash stall speed by just holding in on the brakes and seeing how high you can stall the car up. You won't get anywhere near the flash stall speed.

Aftermarket converters are the same way. I don't know how many people ordered 3000 stalls and expected to be able to hold the brake and get the car up to 3000rpm. It just doesn't work that way.


2001 Dark Highland Green Bullitt
[email protected] naturally aspirated on a bone stock 2V longblock

Under Reconstruction for RS275 Drag Radial Class
Pushrods and Powerglide Coming Soon

If it weren't for physics and law enforcement, I'd be unstoppable.
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post #3 of 7 (permalink) Old 06-18-2010
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fantastic information
there indeed were many misconceptions especialy from myself

1990 mustang gt 5.0l, red, aod- its build time

2001 mustang gt lots of mods- sold
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post #4 of 7 (permalink) Old 06-19-2010
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Quote:
Originally Posted by Bullitt5339 View Post
Aftermarket converters are the same way. I don't know how many people ordered 3000 stalls and expected to be able to hold the brake and get the car up to 3000rpm. It just doesn't work that way.
that's how i thought they worked. oh well, i'm not planning on buying an auto until i have trouble walking

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post #5 of 7 (permalink) Old 06-19-2010
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Neat info, I heard a Marauder yesterday that sounded n.a.s.t.y. Sounded better than most of the Mustangs around my area. :yelpleased:

03 Mach 1: New toy
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post #6 of 7 (permalink) Old 06-19-2010
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how do you flash the converter correctly...

2001 Mustang GT [email protected]
4R70W
K&N CAI
Accufab Plenum
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post #7 of 7 (permalink) Old 06-19-2010 Thread Starter
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A transbrake is the only real way to see the flash stall speed, but if you don't hold the brake and bring the rpm's up, but just smashing the gas from a dead stop, you will get fairly close to the flash stall speed.

2001 Dark Highland Green Bullitt
[email protected] naturally aspirated on a bone stock 2V longblock

Under Reconstruction for RS275 Drag Radial Class
Pushrods and Powerglide Coming Soon

If it weren't for physics and law enforcement, I'd be unstoppable.
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