Originally Posted By Sport440
512 all the way. up More cubes, uses the 2.2 chevy rod vs the stock 2.375 journals, 1.32 compression ht. vs the 1.12 ht. of the 499.
I couldn't have said it better. I ran a 511 CID (4.375" bore) low deck and loved it. I do recommend a main cap aid (aluminum caps or a girdle).