I HAVE A 1983 CHEV WITH A 355 AND A CARB, I NEED TO KNOW IF THERE IS A WAY TO KEEP THE TRANS IN 4TH GEAR WHEN I FLOOR IT. IS THERE A KIT OR SOMETHING I OR A TRANS SHOP CAN DO? I NEVER CAN USE THE BIG 4BBL'S ON THESE TRUCK. I CAN GET IT UP TO ABOUT 85 OR 90 MPH THEN IT WILL SHIFT BACK TO 3RD. ANYTHING WOULD HELP THANX
NEIL
NEIL