HEY JUST BOUGHT A 1989 VIP WITH A 2.3 LTR. OMC (ford) MOTOR. IT RAN FINE FOR ABOUT 2 HRS THEN IT'S LIKE A CLUTCH SLIPPING IN A CAR .IT JUST WINDS OUT AT HIGH SPEED.BUT AT LOW SPEED I HAD TO GO SLOW TO GET BACK TO THE HOUSE (REAL SLOW).ANY HELP WOULD BE GREAT.ALSO WHAT HP. IS A 2.3 LTR.ON A...