George C....

Our numbers are off some but not by much

Either way that's too much slip under 5% is target

And if I recall that was his highest mph he typically traps lower

George C....

And would be interested to see his tune and see where it's soft at

Atomic

iTrader: (42)

This one? Wallace Racing - Converter Slip Calculator

It gave me 8% when I punched in your numbers...

GMCtrk

iTrader: (27)

They must have updated the software on that calculator because the same thing was showing much higher before. Anyways, I feel better. But even that, 8% is a little too much for a $1200 converter don't you think.

Now, I went outside, and checked the regulator. With the engine idling and the regulator seeing atmospheric pressure, I was able to turn the pressure down to 40 psi. I think that's as low as the Aeromotive can go. So I'm pretty sure the stock return line is ok.

Atomic

iTrader: (42)

George is right 8% is a little high for a race setup, but isnt unheard of in these trucks. I had a $1200 converter that had 20% slip and that was terrible. I have had mine worked 2 or 3 times to get it where I want it. If it were me I wouldnt worry about 8%, but feel free to do what you want.

GMCtrk

iTrader: (27)

You were making a solid 2-300 more rwhp though, which could explain that.

For the time being, the converter is the least of my problems and will probably stay put.

George C....

Atomic I got 8% using rpm
And 10% using mph


Problem is more power equals more slip and he wants to go faster which will create more slip


Now it's possible trans tune could use some help for converter settings

George C....

As for 10s you'll need a 1.4x to go 10.99 with a 121

Now based off the 126 you'll need a 1.5 to crack a 10

Or other option is muscle the way into 10s with pure power.....I tried that and came up short.....my 330 game was weak.

11.05@130 with a 1.65.....Damn stick shifts lol

Vortec350ss

iTrader: (20)

If it was me I would have the converter tightened up. His 1B should be fairly similar to my Yank PT2800MD. A little loose for my liking with the TVS, but it worked fine and I didn't see that much slip in the higher RPM range. I flashed 4200 RPM, but converter efficiency was great on the big end. Granted I may not be making quite the power you were for your best trap speed run, but I had a 118.54 with a race weight of 5350 (I had it on a scale... so I know exactly what it was) and the AWD drag.

5000 seems heavy for your truck being an ECSB 2wd. How confident are you in that weight? I would think my truck being a 4x4 CCSB Denali would be a hell of a lot more heavy than a mere 350# over your earlier model truck which is generally lighter.

Atomic

iTrader: (42)

I have dicked around with doing highway pulls in 2wd and 4wd before, and 4wd was a helluva lot slower. The power loss was greatly appearent. I think Jake saw roughly 10-12% loss on the dyno back to back.