Cowl Induction Hood verse stock hood GMC GMT400 Truck

[chevydiesel]

So, I'm thinking what the pro and con airflow wise to changing just a hood.

The truck is a 95 GMC 1500 Extended Cab Short Bed Turbo Diesel

Thinking of adding a 2.5" Cowl to the truck verses the stock hood. I'm not a fan of just changing something for the sake of looks so if the cowl hood hurts performance by changing airflow around the truck then I'd stay away from it. On the other hand if it helps, I'll certainly do it. One of the biggest pro's I've discovered about a cowl hood is that cooling performance is improved, so I'd like to use it but not at the cost of speed.

Thoughts?

[Rex Schimmer]

Just a thought here, if the cowl style hood improves cooling then it must cause more air to flow through the radiator which probably means that it causes more aero drag. Air into and through the engine compartment is high drag. As to whether the cowl induction hood improves external aero  I cannot comment.

Rex