406 & stuff
Hello all. I decided to build this motor over 2 years ago while I was in college. One of my instructors talked me into building a 406 over a 383. I traded him a set of vortec heads for a 2 bolt 400 block and crank. He is a master machinist, and he bored the 400 .30 over at the college for nothing. I bought some aluminum zz4 heads and intake off another student that decided to shoot over 250 shot of nitrus into a zz4 crate motor and lost a piston. He only made two passes at the track on the motor. The heads weren't hurt at all. The intake valves had no pits on the face of the valves at all. I did a three angle valve job at the college. I lapped the intake valves in. The exhaust valves had a few pits, but I cleaned the face of the valves and checked the tolerances, and checked the assembled spring height of the springs that came with my comp cam 280 duration. I am using 5.7 connecting rods out of an 96 tahoe motor. I had the motor inturnally balanced. I have 30cc Keith Black hypereutectic pistons and high flow oil pump. We fooled around with an engine building computer program putting in bore,stroke,cam,heads,carb,intake, etc and this motor should be anywhere from 425-460hp and the torque at 2000rpm is over 400 and is over 500 at 3200 and doesn't drop below 400 up to 6000rpm. The cam's power range is from 2000-6000rpm. I just aquired a 700r4 from a 92 astro van I'm building next week to handle the motor. I will eventually change the 2.87 rear end if Chris or Niki don't tell me to go away. I think I have written enough? If not just let me know.
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