[91V3500]

Well I never did find the right oil cooler line for this truck. I did find out that Chevrolet changed the 454's in 1991 to the GEN V, and moved the oil cooler lines to connect to the block on the oil pan rail instead of in the oil filter adapter plate like on the 85-90 trucks, and Suburbans with the 454 and small blocks. So it does appear that I have the factory engine in this truck. The 88-98 Chevy trucks that had the Gen V and Vortec 454's had the oil cooler lines in the oil pan rail like mine but used quick connect, mine used the screw-in connection like a hydraulic hose. What I did was bought a new hose from the dealership that had the correct end that I needed and took both the old and new hoses to the hydraulic shop, and they put my end that connects to the engine (which was OK) on a new hose and put the new end that connects to the cooler on that assembly. Works great but it ended up costing $125 when a hose from Summit would have only been $30. It's still a mystery why I can't find a line for this truck but I'll worry about that later.

Anyway, the good news is I got the driveshaft back and installed today, got the new front bumper brackets on and the bumper installed. All I have to do is fill it full of transmission fluid, install the vacuum line for the trans, and see if it will go under it's own power again.