Hey guys im a newbe here and thought i would let you know that i had my 400 converted to Eagle splayed mains, Moroso filler up to the plugs, new cam bearings, alignd bored and honed, and clearanced for 3.875 crank, plus the main caps and it was cnc done plus painted and cost me $510. 4 bolt 400 blocks are the weak ones not the 350. if 350 4 bolt were weak then they wouldnt have been in trucks. i own 6 350 4 bolts and 1 2 bolt also 2 283 blocks and 2 305's want to buy any??? if you would like some pics of the main caps installed shoot me an email i have a lot of pics of mine. and i can scan a copy of my bill for the 400. check out
www.rmcengine.com for the videos of the cnc machines. mine was done on the V30. go to
www.montecarloss.com/SSThunder/SBCinfo.html and at the bottom of the page it gives hp recommendations for each block. im not trying to step on any toes, just my 2 cents. thanks