JR-CRUZN-C5

iTrader: (1)

Well I run the IMSM Pro-Dominator 9.50 Index which is "HEADS UP" on a .400 PRO TREE.

With only 4 test passes on my NEW FLT Level VII 4L60E Tranny and my NEW Yank TC I put a "slow down short shifting" program in my 2000 C5 Corvette and went to Byron on Sunday to compete in Race #4 of the Illinois Midwest Street Machine Heads Up Index Series.

I run the 9.50 Index so my goal was to run as close to 9.50 as possible.

First Qualifying pass was a 9.44 in 2900 DA weather which was getting progressively worse.

Second and last quailifying pass was a 9.51 @ 151 MPH and ended up the #1 qualifying run for the Pro-Dominator Class giving me a Bye run in the first round.

The DA went up to 3333 for round one so I decided to "RUN IT THROUGH" to see what it would do with my "Slow Down" program shifting the tranny at 6400 down from 6700RPM. My Run was a 9.38 @ 149 MPH.

This combination is CRAZY it only gets QUICKER no matter what I do!!!

JR

Yank

iTrader: (181)

Thanks for the update

Austin@HPE

I take it you dont lock up the converter as most yanks are single disc?

JR-CRUZN-C5

iTrader: (1)

There is no need to lock the convertor at the dragstrip as it seems to be efficient enough to minimize the slipage by itself. I noticed that the trans is shifting very close to the actual settings I put in the PCM. Prior to the yank I had to "fudge" the settings in order to allow for slipage and get the shift points where I needed them. I though I would "slow the car down" by shifting at 6400 down from 6700 so I could run closer to the 9.50 mark but 3rd gear is pulling so hard that it didn't make much of a difference!

JR

I use the electronic locking mech. for highway driving to hold the heat down to a minimum above 55 mph.

Black X

iTrader: (9)

Awesome results JR... your car is flying!!!

JR-CRUZN-C5

iTrader: (1)

So - What do you guys think I should do to "slow the vette Down"?

Lift at some predetermined RPM in 3rd gear

OR

Go back into the PCM and take more RPM & MPH out of each shift like I did before?

Remember I'm trying to run 9.50 with a 9.30 car in the Hot Weather!!!

JR

Black X

iTrader: (9)

If It was mine I would kill it in the 60' 1 or 2 lbs of air or a shock click would kill 2/10's for me.

99Hawk262

iTrader: (19)

Very nice results from an awesome combo!! Congrats man!

camscam02

iTrader: (21)

killl the shiftpoints that way it will be consistant every single time. take some timing out of it, that can slow it down too.

I wouldnt count on spinning etc. or just add enough weight.

AGRV8TD

iTrader: (1)

awesome times on a 4l60E!!!