1/2" max, but if you put the engine that far forward, you'll have headaches with the trans - also with engine in factory-like position it's too far back for a spacer to work ... a fan shroud is the answer, there's after market plastic ones available that fit

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics