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67-ls1 · 08-15-2021, 01:01 PM

On an old car, in my case a 1966 Chevelle, with a horrendously shaped underbody, is it better to use an air dam to try to keep the air out or try to fab a belly pan?
I already have an air dam I’ve made for the front so would it be worth it to remove it and smooth the underbody?
The Chevelle is a full framed car with dual exhaust the full length, two relatively huge mufflers, I live rear axle. It’s a mess. It would require a LOT of framing to support it and I’d still have to leave the exhaust area open.
This is more for mpg than downforce.
Opinions?

08-15-2021, 01:01 PM	#1 (permalink)
67-ls1 Eco Rodder Join Date: Nov 2014 Location: Walnut Creek, CA Posts: 105 Thanks: 25 Thanked 52 Times in 34 Posts	Front air dam vs underbody belly pan On an old car, in my case a 1966 Chevelle, with a horrendously shaped underbody, is it better to use an air dam to try to keep the air out or try to fab a belly pan? I already have an air dam I’ve made for the front so would it be worth it to remove it and smooth the underbody? The Chevelle is a full framed car with dual exhaust the full length, two relatively huge mufflers, I live rear axle. It’s a mess. It would require a LOT of framing to support it and I’d still have to leave the exhaust area open. This is more for mpg than downforce. Opinions? Attached Thumbnails __________________ Worlds highest MPG LFX V6 powered 1966 Chevelle