I have a 95 single cab Chevy silverado with a crate 350 (TBI) and a 5 speed transmission, but my rev limiter is only at 3600! Why? What do I need to do to get it higher? The motor is a new crate 350 with about 50,000 miles, the transmission is from a pull apart so the motor and tranny did not come stock with this truck. I've seen trucks like mine, rev limit at 5 grand. I just want mine to be up there! So what should I do!?