My buddy and I just did a motor swap in his 98 1500, silverado, with that ht 383, 340ho, 435tq. Swap went pretty smooth. and the motor is pretty dam peepy, especially down low, when all that torque bites.....I have a 1998 Z/71 with a vortec 350 in it I am looking at replacing the engine soon and would like some opinions on building a 383 for it nothing to big just some more torque and hp. I have a 4 bolt 350 short block and I can buy a rotating assembly from jegs for about $750 I would like too still use the factory fuel injection and dependablity is a must. What is involved with this build just looking for sugjestions on which way to go would it be wise to just stay with 350 or go 383 I would probably like to stay around 400 hp/400tq.