[jmarsey]

Hi Andy,

Most of the above is true. The 69 cross drilled crank is not the best. They had cracking problems at the cross drilled locations in trans am cars. The 70 crank is the one to have if you must know.

The Boss thing is best left to the guys with the b2 mustangs period. At best, these blocks, although great in the day, are only good for 550 to 600 hp. You're better off with a replacement block, steel main girdle and a well balanced rotating assembly. Also the Boss block is in no way the same animal as an R-block. Night & day.

I would not invest time and money in a sleeved b2 block.

John

ps, to answer your question, the sleeved block is not worth much.