PY Online Forums - Bringing the Pontiac Hobby Together - View Single Post - 69 firebird was 455, 4 speed, (budget) now LS-Lm7 5.3 gm swap

69FIREBIRD76MM · 09-23-2018, 11:45 AM

I blew that 5.3 motor racing on the street, now it has stock 6.0, corvette heads with BTR springs, retainers and .620" lift cam, FiTech efi stand alone harness Intanks efi system. This is the last time I mess with ls motor, this one blows I have a 455 I can put back in car.