CC304 cam with 1.5 rr's is the only off shelf cam and LT1 spring will take. the springs coil bind at 540 lift. so the hot cam on 1.5 rockers MAY be be ok but its a much more aggressive profile and will float up top. and with the cc304 cam on a stock tune with a maf and the car should run clean on the whole curve with out much or any tuning. DO NOT reuse the timing chain. if the motor has low to moderate miles an HD chain alone will work fine other wise the stock stamped link type chain they use does a number on the cam gear. depending on what year? will determine what timing set you can use. i HOPE its a 1995+? so you can use the LT4 HD setup. Good Luck.
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1998 Firebird:buncha parts thats used to make it go fast..... not so much anymore. 
BAAAAAA!!!!!!
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