Thanks Roger I am aware of the cooling diff and believe I can deal with that? also in order to drive the oil pump in an LT-1 the cam still has the drive gear integral there is a short stub shaft to drive the oil pump I am certain that one could use a std. HEI dist but I am hoping to use the dist.on the front? URL on LT1 cooling system http://www.theherd.com/articles/lt1_cool.html Gene