tording99Z28

iTrader: (3)

Why is it that the SS series Yank converters will work with nitrous and the PT series everyone says is not good with nitrous, yet for naturally aspirated cars the PT series is superior to the SS series?

eric01ss

iTrader: (13)

because of the shift extensions!! yet a pt4000 will work with a 150 shot

eric01ss

iTrader: (13)

also the stats i gave u has been confirmed from yank

cals400ex

iTrader: (27)

what is the difference in shift extensions between these two series?

99Hawk262

iTrader: (19)

I've heard you can spray the PT4000, but when I called Yank they said stick with the SS series for spray. I don't think the PT series would perform near as well on spray as an SS series would. The PT is designed and works best with NA applications.

99Hawk262

iTrader: (19)

My shift points are set at 6500 and with the SS4000 shift extension was ~4900. With the PT4400, shift extension is 5800 .

slimcracka

iTrader: (7)

because the str of the ss converters are higher than the pt. meaning if you where to get a pt converter and sprayed a 150 the car would only pick up on the track as much as a ss converter car on a 75 shot..also known as blowing threw the converter.

cals400ex

iTrader: (27)

does the same principal apply for a supercharged vehicle?

slimcracka

iTrader: (7)

yes you would want a py3400 i think..

AutomagicLS1

iTrader: (18)

Im going to spray my PT converter but im going to have it restalled to a 3800

cals400ex

iTrader: (27)

when you say shift extension is "X" does that mean X is the lowest rpm the car sees after it shifts? i guess i am a little confused here too....

99Hawk262

iTrader: (19)

Yes...shift extension is what the RPM's fall to after a shift.

tording99Z28

iTrader: (3)

Well this has helped quite a bit and shed some light on my questions. Looks like it will be a SS series for me. Thanks guys!!

andy670ho

iTrader: (3)

SO what would be a good effiecient converter to spray 150 shot. Who makes something that will stall high enough to get a big cam off the line and not blow through the converter? Looking for something around 4000 to 4400 stall and still be able to spray?

tording99Z28

iTrader: (3)

Yank makes a SS4000 which is a 4000 stall with a STR of 2.6. I am still learning about converters and auto's in general but I would guess this converter would work just fine for what you want to accomplish.

99Hawk262

iTrader: (19)

Probably the SS4000. Call Yank, they can custom make them too. I've seen an SS4200 with spray.

TA1364

iTrader: (11)

Give them a call, they will know what you need. I think there was a thread in the dragracing section of someone that had a PT and tried to spray, he picked up but there was slipage.

caldercay

In the time that it took to post this, read the replies, and so on, you could have picked up the phone and talked to Dave (at Yank) about this.

Granted, it's good to post this information and get different opinions and perspectives (plus, lurkers get to learn a thing or two), but I know that you will benefit the most by calling *THE* person who builds the product - the person who most understands the situation.

After the two of you arrive at a decision, you could post back here that final decision and the "why's". They (Dave) understand the business of building TC's for various configurations.