Since valve covers and clearances have been addressed- Does anyone have a quick and dirty method of dealing with the left rear valve cover bolt, with the engine in the vehicle? Tom Hall back in the 70s had a tech tip about using about 2.5 in long bolt with numerous nuts so you would finger thread it, then tighten it with an open end wrench on the bolt head. The hole in the firewall is a waste and none of my 1/4 in drive sockets/extensions seem to be the right size. Fortunately I have'nt had the need to remove the valve covers since I got rid of the solid lifter cam!