While the LQ4 was on the stand I cleaned it up, and reset the valves. I also had to remove 3 broken exhaust manifold bolts, and helicoil 1 of them.
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I ended up picking up a set of really nice conversion motor mounts from ls1truck.com member beertestr. They worked perfectly. I ended up using an O'Reilly's Auto Parts flywheel for the swap mated up to an 11" SBC clutch. If you go this route, make sure you use 30mm length bolts to hold the pressure plate to the flywheel. The O'Reilly's flywheel is unnecessarily counter bored, leaving you with very little threaded material inside of the pressure plate mounting holes. I also used a different pilot bearing and throwout bearing.
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I had to enlarge the opening in the firewall to accept the express van throttle cable. I also had to bend my throttle pedal a bit so that the throttle body would close completely.
My fuel rail had both a return and a supply line. I used nylon quick disconnect repair lines to mate to my existing stock braided fuel lines.
I ended up using a NBS high pressure line and the OBS return line for the power steering setup.
I bought a pre-wired fuse block and relay center and integrated them into my modified LQ4 harness. I used all of the original k1500 sending units to control my gauges. I was pleasantly surprised when everything worked! The engine cranked for about half of a second and fired right up. It had a steady 50 lbs of oil pressure at idle. I had the truck towed to the exhaust shop where they welded up a connection between the old exhaust and the LQ4 flanges. Here's a few pics of it all buttoned up.
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I can't even begin to tell you how much of an upgrade this is over a TBI engine. I get 60% better fuel economy and it hauls everything I need it to without a problem. It has even destroyed a few hemi Rams.
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