. The gentlemen that sold me the car told me that it is a 1973 Pontiac 400 with a Holley 4160.
when I bought mine 14 yrs ago, previous owner had installed a 73 - 400 also...its a fairly powerless engine , but depending on the heads...it came with 4C,4X ,for a 170 hp, or a 4X for 185/230 hp...you can always get better heads to get power...I bought 5C heads with larger valves from a 75 (these are fairly "unknown" heads, meaning normally cost less than the more 'known' 6X heads) and had them milled down to 90-92 CC..for a fairly good power...and could still use regular gas
