heres a link with some intake and cam news from comp cams for the 4.8,5.3 and 6.0 ls engines. over 420 hp with an intake,throttlebody,headers and cam on a 5.3 LSmotor! read the first page then use the auto trader classics link at the bottom for the rest of the story. got me thinking an LS motor might just be in my astres future!
http://www.cpgnation.com/forum/autotrad ... 3a+FAST(tm)+LSXRT(tm)+Intake+&AID=3236
73 astre gt 355 small block 435 hp 435 torque edelbrock performer rpm power package