Inliners International Forums General Discussion Vortec 4200 4200 swaps into older vehicles - basic information

You can see there is issues with the upper water neck and clearance. With a cuttoff wheel and a tig welder, the water neck can be remedied.

There's plenty of room to move the engine back still, but if you look at the top picture you'll see the proximity to the firewall. I don't have the intake on, but as you see in the top two pictures, there would be interferance with the firewall. The option here would to modify the firewall bump slightly for clearance. With that said, there wouldn't need to be any modifications to the water neck.

So, No 1- modify water neck or 2- modify firewall.

Hope this helps.