SS/CS Start line Ratios

[SuperStock172]

Originally Posted by Mike Mans

Back when we ran that combination, we had a Pro-Trans with a 2.45/1.51 (E-2). I don't know if I was as fast as Ashton, but we made a few good runs over the years.

Our program made peak power around 9400 and if I'm not mistaken we had a converter stall around 8400. When we were in decent air we would cross at 10,200 if we were trying to run fast.

Best of luck with your combo!
Mike

Hey Mike,

Thanks for commenting, I've followed your car in the past and was certainly impressed with the results you achieved in ss/cs. The rpm at peak power of our combo is close to yours, out of interest what were you aiming for on the shift points? We might be a little conservative with ours from first impressions.

Thanks for the help.

[Adger Smith]

The 2.45-1.45 is a real good ratio.
The % drop between gears is good.
I heard rumors that was what the fastest CS car had in it.
If you want to take a little low gear and a tiny bit of second gear out of it try putting a "F" in place of the "E". Makes it a 2.41/1.48
That is what is so nice about the pro flites.
Watch the fast comp guys. A lot are in High at or before the 330....JS

[SuperStock172]

Originally Posted by Adger Smith

The 2.45-1.45 is a real good ratio.
The % drop between gears is good.
I heard rumors that was what the fastest CS car had in it.
If you want to take a little low gear and a tiny bit of second gear out of it try putting a "F" in place of the "E". Makes it a 2.41/1.48
That is what is so nice about the pro flites.
Watch the fast comp guys. A lot are in High at or before the 330....JS

Thanks for the reply, it seems our current Ratios are in the ball park then to what you guys are running in SS/CS which is good to hear. We did have to send our converter off for repair sometime ago and ever since then it has not been the same. We have a newer billet style on the way to test so the tired converter may prove the reason why the newer Ratios hadn't performed as expected.

[SSDiv6]

Originally Posted by SuperStock172

Thanks for the reply, it seems our current Ratios are in the ball park then to what you guys are running in SS/CS which is good to hear. We did have to send our converter off for repair sometime ago and ever since then it has not been the same. We have a newer billet style on the way to test so the tired converter may prove the reason why the newer Ratios hadn't performed as expected.

Are you guys still running solid lifters in lieu of roller lifters?
By the way, the right converter is a game changer for performance.

[SuperStock172]

Originally Posted by SSDiv6

Are you guys still running solid lifters in lieu of roller lifters?
By the way, the right converter is a game changer for performance.

Yes solid lifters are still mandated with a maximum of .904 lifter size. Solid lifter makes them a little trickier to peak at the same RPMS as the SS/CS combos but they get close.

[Hacksaw]

Originally Posted by adger smith

the 2.45-1.45 is a real good ratio.
The % drop between gears is good.
I heard rumors that was what the fastest cs car had in it.
If you want to take a little low gear and a tiny bit of second gear out of it try putting a "f" in place of the "e". Makes it a 2.41/1.48
that is what is so nice about the pro flites.
Watch the fast comp guys. A lot are in high at or before the 330....js

e2 = 2.45 1.51 f2 = 2.36 1.48 e6 = 2.51 1.51

[Mike Mans]

Originally Posted by SuperStock172

Hey Mike,

Thanks for commenting, I've followed your car in the past and was certainly impressed with the results you achieved in ss/cs. The rpm at peak power of our combo is close to yours, out of interest what were you aiming for on the shift points? We might be a little conservative with ours from first impressions.

Thanks for the help.

We were'nt ideal in how our car was shifting in terms of performance back then. We were shifting the 1-2 shift a little late due to the way our car would be in the wheelstand. So we would shift both gear changes around 9500. Knowing what we know now, I would be running a bit looser converter and shifting a little higher up on the 2-3 and get out of low a little earlier.

Best of luck,
Mike

[SuperStock172]

Originally Posted by Mike Mans

We were'nt ideal in how our car was shifting in terms of performance back then. We were shifting the 1-2 shift a little late due to the way our car would be in the wheelstand. So we would shift both gear changes around 9500. Knowing what we know now, I would be running a bit looser converter and shifting a little higher up on the 2-3 and get out of low a little earlier.

Best of luck,
Mike

Thanks Mike, appreciate the input. I agree with the converter comment, everytime we have tried our tighter converter the car has always run slower.

Thanks again for the help

[SSDiv6]

Originally Posted by SuperStock172

Thanks Mike, appreciate the input. I agree with the converter comment, everytime we have tried our tighter converter the car has always run slower.

Thanks again for the help

Are you the Mate that has been working with Brenton Marusic?
Brenton had reached out to me with the same question last year. I had given him some feedback that I had discussed with Adger Smith. Our conclusion and the feedback I gave Brenton was to keep the gear spread, put more gear and also use a looser torque converter. I believe the higher RPM operation scared Brenton a bit.