Radiator air flow

[lutronjim]

I have an LC9 in my 70 ss. The extra cam timing stuff on the front gives me no room for a puller fan. The back of the engine is less than an inch from the firewall so I can't move it rearward. I have a large Spal pusher in front of the AC condenser.

There is quite a gap between the radiator and the condenser and a lot of the air pushed by the fan escapes before going through the radiator. I am installing a new crossflow radiator and was wondering if there was some material (sponge, etc.) that I might use to seal the gap.

While it hasn't run hot, once the fan turns on like at a stop light it doesn't quit until I am roiling again.

Atlanta area gets pretty hot in the summer.

Thanks