stang4lyfe

hey im new here and just wondering something

I got a 1966 mustang and with the stock 289 hi-po. love the engine but u can never have enough power, plus i eventually want around 450-500hp and i doubt ill get there with a 289 without boring it out.

so the question now faces me. should i bore out the 289 and basically make it a thin walled winsor or should i go with the higher compression cleveland 335 or 351? I know the cleveland is the big-small block which i also wanted to know if it would fit in the 66 engine bay. also if i wanted to get the C where abouts should i start lookin for a block (or the whole built engine).

last question: ive heard that the cleveland factory or people have developed new heads for the engine and if ne one can fill me in on these heads.

thanks from the poor college student
-mike

hookandpull

Why not go with a 351windsor?

gt96stang

Welcome. You should try posting this in the classic section or maybe the general tech section. Many people do not look in here to answer questions, it's mainly to say hello.

alexr

how about a stroker? theyre always nice.

1BAD3V

I would go with the stroker if it was me. But between the ones you listed, I would choose the 351. Good luck and let us know what you chose.