Yank guys
Yank guys My car previously had a Yank 4000 SS in it. That's when it run the best times in my sig. Well my trans blew so i sent it back to Yank. On my shifts it was dropping around 1300 rpm. So talked to Dave at Yank and he said going to a PT 4400 should really help and definitely help keep my rpms higher on shift. Well got it in and it acts exactly like the 4000 SS drops around 1300 on shifts. Needless to say I was disappointed. I thought about calling him back and raising hell but the car was down long enough. I'm just not going to pull that converter again and send it back when I don't really know it would be any different.
I'm just surprised/ disappointed its still dropping the same as the SS. Makes me wonder if he even did anything different to it. It sure acts just like the SS. Any thoughts from you guys?
I'm just surprised/ disappointed its still dropping the same as the SS. Makes me wonder if he even did anything different to it. It sure acts just like the SS. Any thoughts from you guys?
On The Tree
Joined: Dec 2018
Posts: 135
Likes: 91
My wifes car actually picked up going to the PT4000 in her cam only car, picked up 1-2mph while not losing anything at the sixty foot still 1.41-1.43 at the front half. Her cars goes 10.80's at 122-123 with 417hp at 3300lbs
Staging Lane
Joined: Dec 2012
Posts: 94
Likes: 11
Timely thread as I'm presently shopping for a converter.
How would the SS compare to the PT? Is it at the hit? More stall with less torque needed or vice versa?
The reason I ask came about in a discussion with Circle D. At first I was just another street hero wanting a stall converter. When I stressed the drag racing aspect (and leaving street off the table) the spec changed to their Pro Series. I think though that had to do with diameter/stall requested. Their HP line is an 11" vs the 9.75" spec'd for me.
A quote from Brian at Circle D.
This converter is our smallest/most aggressive 9.75" diameter. We have found it compliments the power delivery of the naturally aspirated engines quite nicely. Since you're looking to maximize your track performance, I don't see any problem with a stall speed around 4000 rpm.
Would it be fair to say that the differences might similar to the ST vs the PT?
I also spoke with Dave at Yank and he recommended their SS4000. That too was a conversation that didn't emphasis the racing part.
How would the SS compare to the PT? Is it at the hit? More stall with less torque needed or vice versa?
The reason I ask came about in a discussion with Circle D. At first I was just another street hero wanting a stall converter. When I stressed the drag racing aspect (and leaving street off the table) the spec changed to their Pro Series. I think though that had to do with diameter/stall requested. Their HP line is an 11" vs the 9.75" spec'd for me.
A quote from Brian at Circle D.
This converter is our smallest/most aggressive 9.75" diameter. We have found it compliments the power delivery of the naturally aspirated engines quite nicely. Since you're looking to maximize your track performance, I don't see any problem with a stall speed around 4000 rpm.
Would it be fair to say that the differences might similar to the ST vs the PT?
I also spoke with Dave at Yank and he recommended their SS4000. That too was a conversation that didn't emphasis the racing part.
Last edited by 67LSX454; Feb 18, 2024 at 11:04 AM.
Staging Lane
Joined: Dec 2012
Posts: 94
Likes: 11
Regarding shift extension, from post #1 it would appear that the promise is less RPM drop when going with the PT as opposed to this SS. The OP didn't experience that however it looks to be then that that's the difference between PT and SS.
The difference in shift RPM's notwithstanding, do you drive on the street as well? Where there any discernable differences between the two types?
I'm exactly in that spot where you are/were. SS4000 as suggested by Meyers or a PT4000 if there's a benefit and no downside.
My car previously had a Yank 4000 SS in it. That's when it run the best times in my sig. Well my trans blew so i sent it back to Yank. On my shifts it was dropping around 1300 rpm. So talked to Dave at Yank and he said going to a PT 4400 should really help and definitely help keep my rpms higher on shift. Well got it in and it acts exactly like the 4000 SS drops around 1300 on shifts.
I'm just surprised/ disappointed its still dropping the same as the SS. Makes me wonder if he even did anything different to it. It sure acts just like the SS. Any thoughts from you guys?
I'm just surprised/ disappointed its still dropping the same as the SS. Makes me wonder if he even did anything different to it. It sure acts just like the SS. Any thoughts from you guys?
I'm exactly in that spot where you are/were. SS4000 as suggested by Meyers or a PT4000 if there's a benefit and no downside.
Last edited by 67LSX454; Feb 20, 2024 at 09:16 AM.
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Staging Lane
Joined: Dec 2012
Posts: 94
Likes: 11
This is the move I was contemplating again as that TCI converter is still in play. Or was anyway as it'll need to be cut open and gone through and it's not worth it.
This SS vs PT conversation has me re-thinking the plan. Still more converter companies yet to be heard from (I've got a half dozen leads out there).
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Staging Lane
Joined: Dec 2012
Posts: 94
Likes: 11
Where then would you see a difference? Is this similarity with the pump and stator carried across to different product lines? That is, SS vs PT (both are available in a 4000 stall)?
Regarding shift extension, from post #1 it would appear that the promise is less RPM drop when going with the PT as opposed to this SS. The OP didn't experience that however it looks to be then that that's the difference between PT and SS.
The difference in shift RPM's notwithstanding do you drive on the street as well? Where thee discernable differences between the the two types?
I'm exactly in that spot where you are/were. SS4000 as suggested by Meyers or a PT4000 if there's a benefit and no downside.
The difference in shift RPM's notwithstanding do you drive on the street as well? Where thee discernable differences between the the two types?
I'm exactly in that spot where you are/were. SS4000 as suggested by Meyers or a PT4000 if there's a benefit and no downside.
Staging Lane
Joined: Dec 2012
Posts: 94
Likes: 11
That brings to mind the improvement we saw when going from an off the shelf TCI 10" to a Yank SS3600. Previous shift RPMs through the 4L60 were 6500 down to less than 4k. Maybe closer to 3700-3800. The Yank tightened that up to never getting less than 5000. It was a lot of years ago but IIRC, the 60' was about 2/10 tenths quicker and a half second quicker overall. I do recall how long the recovery was between 1st and 2nd with the earlier TC. It felt like forever.
This is the move I was contemplating again as that TCI converter is still in play. Or was anyway as it'll need to be cut open and gone through and it's not worth it.
This SS vs PT conversation has me re-thinking the plan. Still more converter companies yet to be heard from (I've got a half dozen leads out there).
This is the move I was contemplating again as that TCI converter is still in play. Or was anyway as it'll need to be cut open and gone through and it's not worth it.
This SS vs PT conversation has me re-thinking the plan. Still more converter companies yet to be heard from (I've got a half dozen leads out there).
