i pointed out in another thread that covers this subject. i reqad alot of mags and came across one i bought but never peeked at. it covers the topic of using a 400 block and converting it to a 455 using a stroker crank. the give all parts number, prices and a detailed build up on the subject. the cost is in your range and you will be able to source the 400 block easier than the 455 block.
andy
Andy
due to budget cutbacks, the light at the end of the tunnel has been disconnected for non payment.
