How much more does an iron block weigh over aluminum ...
sdpc has the ls1/6 aluminum as 110 and the lq9 as 170 so 60lbs. mods408 iron block,SDPC cnced ls3 heads,11.1 comp.,vic. jr. intake with a 4150 tb., 231/242 cam,pacesetter lts and a Complete Street Performance tune and an A VAS build.