Let's talk stall speed ...I'm confused

[Amelio]

So I jut installed my ew PTC converter I got from Dusty..... its a 10" 3000 stall,I actuall got it a few weeks ago I have just been too busy to put it in.

Anyway what I had was an ART Carr 10" NLU 3000 stall that had issues....when I firsted started to investigate on checking the stall everything i found was referring checking the stall speed at 0-1psi the converter would hit that at 1900rpm which is very low. It would also be around 2400-2600 at 5-6psi and start to spin the tires.

After installin my new converter today....everything went smoothly....topped off the fluids and ran it through the gears about 4 times on the lift I set it on the ground to check the stall speed.

So in the driveway the boost gauge just moved at 2400-2500.....I thought I was going to see 3000 as described from other posts I read about stall speed.....I gave it a lil more gas and saw 3000-3100 and the tires started to spin this was also at about 4 psi.

No in my mind this is a 3000 stall converter because it locked in at 3k and started to spin the tires........I am confused on what are you actually supposed to see at 0-1psi? Should I see 3k at 0-1psi?

I did not get to drive the car because it started to rain so I have no other input besides stalling it in the driveway.

Can some one please explain

 

[forcefed3.8's]

You need to check stall with the wastegate open.

 

[Dusty Bradford]

Stall speed will change depending on how easily the turbo builds boost. What you want it enough stall to easily spool the turbo so you don't have a lot of lag. Any extra stall speed just leads to un necessary drive train looses. It sounds like your combo builds boost very easily which is a good thing.

 

[Amelio]

yeah it sure seem to buid pretty quickly and the stall seems to be dead on 3k, I was just curious on the whole "0-1psi" I read so much on this topic. I can not wait to drive it I am sure it will be a huge improvement from what I had....it has been rainly like crazy so I will just have to wait.

Thanks Dusty!

 

[qws2000]

I really never understand the diff, but I just changed to a NLU true 3400 stall.. WOW what a difference in how the car drives. Just wanted to say Thanks to Chris at CK Performance.....