NEED HELP

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NEED HELP WITH 4L60E TUNING – LS SWAP

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**Vehicle Info**

- 1964 Impala SS

- 5.3L LS (Gen 3, 2004)

- Sloppy Stage 2 cam

- MAF deleted (Speed Density)

- 36lbs injector

- retro throttle body (for air only)

- Holley single plane mid-rise intake

**Transmission Info**

- Summit 4L60E (SUM-700461)

- 2600–2800 stall converter

- Gear: 3.08

- Tire height: 175/75r14

**ECM/TCM**

- P01 PCM

- OS: 12208322

- Running full SD (MAF fail/high freq disabled)

**My Goal**

To make this car drive like a factory new car nice and smooth but with a kick if i need it

- Smooth normal driving

- Correct shift timing

- Strong WOT shifts

- Clean TCC behavior

- No flares/slips/harsh shifts

**Transmission Issues I'm Seeing**

WHEN COMING T A STOP IT HAS A BUMP OR JERY FEELING IT FAITH AND WHEN IM DRIVING AND LETTING OFF THE GAS ALMOST FEELING LIKE I HAVE A STICK SHIFT CAR, IT LIKE ITS BUCKING. DURING MY VE TUNE I HAD NO ISSUE AFTER A DAY OR TWO I NOTICE IT SO BEGAN TO MESS WITH THE THROTTLE FOLLOWER AND CRACKER TO SEE IF THAT WAS IT BUT LIKE I SAID IT FAITH NOW AT THE STOP BUT IT THE DRIVE I WANT FIXES IF NOT ALL OF IT I FEEL LIKE AM CHASING MY TAIL IM NOT GOOD AT THE TRANSMISSION TUNE YET BECAUSE I HAVNT DONE ONE YET. BEEN TRYING TO FIGURE IT OUT BUT I NEED HELP ASLO TIRED TO FIX THE MPH AND COULD NOT COME CLOSE VCM SHOWS ME AT 45MPH AND SCHOOL ZONE SHOWS ME AT 37 MPH I DID THE TIRE WIZARD BUT NO LUCK I DONT KNOW HOW TO FINE TUNE IT

**What I Have Already Done**

- VE tuning in progress

- Idle airflow dialed in

- Fuel trims corrected

- Spark tables smoothed

- MAF tuning disabled (SD only)

**Files I Will Attach**

- My current tune (.HPT)

- A log of normal driving

- A log of WOT to show shift behavior

- A log showing TCC lock/unlock behavior

**What I Need Help With**

I need an experienced trans tuner to:

- Look at my shift timing tables

- Look at my shift pressures

- Look at TCC apply/release tables

- Recommend improvements for:

• Better part-throttle drivability

• Clean, consistent WOT shifts

• Proper TCC lockup with my stall

• Reducing flare/soft shifts

• Setting correct shift mph for 3.08 gear

Any help, suggestions, or revised tables would be greatly appreciated.

Thank you!

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