hello i just blew the planetarys in my 700r the tranny was completely built vette servos bigger boost valve etc i want to have another built id like to know what a good year for a core to start with would be i hear 88 and up had better parts myine was 83 r the planetary stronger in receny years any help advice greatly appreciated im pushing 450 plus horse

 

Use at least an 87 and up tranny, I also used Art Carr internals that were cryogenicly hardened, and installed new 5 pinion planets with an Art Carr "Beast Shell" among other things.