*From a recent article from Michelin,it looks like if the Camaro actually got 30-mpg HWY,then the 1,000-lb weight drop would fetch 32.58 mpg.
*The Camaro is around Cd 0.39? compared to around Cd 0.45 for the Chevelle.
*Don't know about the frontal area difference.
*You're doing disc brakes and that's gonna hurt a bit compared to the original drums.
*A hidden grille-block could help (ala 'Crisis Fighter Pinto ).
*Electric cooling fan would shave some parasitic loss.
*Same for airdam.
*Lowering won't affect Cd much but it would cut frontal area a smidgeon.
*LRR tires wouldn't hurt if you could live with their 'look.'
*Maybe a modest rear spoiler.
*Under body smoothing wouldn't add much weight,you'd never see it.
I think you've got a shot at it,if the Camaro powertrain lives up to its BSFC promise.
