Im finally getting the transmission into my GTA, Im running a 385 with compcams 276 on a 108lsa,, it only pulls @10-12" of vacuum at idle in gear and doesnt like it very much(stock converter and beat up stock trans)... Ive got an700r4 with probuilt internals rated to 650hp and an edge 3400-3600 stall with 2.4str..... Ill keep everybody updated once its in on the driveability and feel...