Thats a big cam, and between the 3.42's and the tall first geat of the 80e youre really going to need a big converter not to feel like a pig outta the hole. The combination of the 2 will definitely make your MPG's suffer.

 

I already have a 4k stall now an I get 15-17 mixed

 

I lost 1-1.5 mpg with my cam, similar size.

 

You will lose some mpg as most of said. Being this is your DD, I wouldn't cam it personally. Gas won't stop at 4.00.

 

I went for 14mpg stock to 11.5 all city, with all the mods in my sig. Its well worth it IMO.

 

i would dump the 3.42s for 4.11s and u mit get 12/13 and 17 highway

 

Shouldn't the 3.42s help some? I hit lockup at 38

 

IMO, if you can afford alot of gas money, then go for it.

 

How you drive will determine your mpg, just like in anything you drive. If your worried about mpg and the price of gas buy a beater. My rt gets 17 with 4.30's and 31' tall tire. My HD gets 14mpg, and hauling the rt it gets 11mpg. my Honda crv gets 24mpg. When gas prices or high I sport the Honda

 

Bingo. I can have my MPG vary by 10 depending on how I drive LOL

If you can drive like a Grandpa and never get on it you will not notice much of a difference....but what's the fun in that?