My nephew and his friend Brian stopped by and helped me test fit my LS 5.3 in my 1971 4X4 and it did not go so well the oil pan bolts are hitting the cross member. The engine still has to drop 2.5" and slid back about 2.5". I was wonding if the big block cross member is wider. I need about 1" more so it will drop down and slid back.
1969 Quad cab build
http://67-72chevytrucks.com/vboard/s...=1#post6325022