I have a 87 k5 TBI 350 5.7 700r4 tranny, 9" of lift with 38's. In the process of beefing up the axles and a few other thing. The problem that i ran into is that it started blowing white smoke out of the exhaust. Thought "okay headgasket is bad". Pulled it off and yes it was bad.....then we found the block was cracked between 2and4. Now my problem is that i don't really want to go buy a brand new longblock kit, but it is impossible to find 350's around here. So i was wondering what motors will bolt up to the 700r4 and that i won't have to do anything crazy to put it in.