I'd say the only thing that could be the problem is air flow - is the fan a pusher or puller? a shroud is prolly what's needed, fab a quicky up and see if it helps, no reason a sound small block should run above stat temp with a good rad

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 & Rust-a-holics Unanimous parking lot