I just ffound out my next door neighbor has a 289 from a 65 mustang the he would sell me. we are friends and he would let it come to me cheap. is the swap worth it or should i wait for a 302 to come along?
ok thanks and he told me it has been sitting for a couple years and will need a rebuild and i was already expectting that on whatever engine i got
Make sure it is a 6 bolt bellhousing. Otherwise you will have issues. For the 1st half of 65 they used the old 5 bolt block. They phased the 6 bolt block in later in 65. Modern SBFs, including the 302, are all 6 bolt bell blocks.
I've heard there are adaptor plates to bolt later bellhousings on them. Also, if it's a 5-bolt you can sell it and bring more money than you spent for it, since Mustang purists like to keep their cars "numbers-matching", I guess.
Ditch the 3 bolt harmonic balancer also as it is a pain to find the right combo or pullies if you need to change them. Was the 289 Special a 64 model? @v carb with solid lifters? clint
check the lifter vally to verify its a 289 lots of 302s had heads w 289 markings most are identical. still may have 302 guts