i know i'm probably gonna catch my share of flak for this engine swap but i'm doin it anyway. i have a 1972 datsun 240z , i have the kit for the engine swap and i would like to swap in a 305 . i would like to get 250-300 horsepower out of this thing . . . . for as little money as possible . i also really wanna avoid fuel injection because of my lack of automotive knowledge . i have no idea what year or model of car would be best to pull this engine from but i'd really appreciate any help anyone could give me .    

I would look for somthing in the 80-85 range what you should do is to pull the valve covers off and look for the head casting numbers you will want the 14014416 prefferably or 14022601 they are the ho heads with 58cc cubustion chambers.I used both heads with good results with proper cam, carb, c.r., headers, porting, and tuning you should not have a problem reaching your goal maybe more.  

so which cars from 80-85 came with a 305 ? cuz i dont wanna end up pulling the wrong engine . how would i identify the engine if the car had no distinguishing badges or marks ?  

On the back of the block were the transmission bolts to it will have a 5.0LG witch means it is a 305 a 5.7LG is a 350 and so on.They came in the trans am,firebird, and camaro but I would still pull the valve covers and look for the casting # I mentioned.  

thanks alot . . .really appreciate your help .  

No problem glad I could help.  

Hey, I like 240Z's I may be the only one beside you, but I think it sounds like a great project.