SoxXpupPeT

iTrader: (34)

I have an 82' impala thats in need of a new heart. its 267 is old and tired. Ive been thinking of swapping in either a 4.8 or a 5.3 into her. my goals are daily driveability and good fuel economy. For simplicity sake however i was wanting to go carbed for this set up. running edelbrocks intake and MSD's box with a holley 650 vacuumed secondary.

my question is to all of you is what route should i take ? which engine should i go for, and which setup would work best for what i need

stroker_SS

The 5.3 has more potential in stock form, but either the 4.8 or 5.3 will suit your car quite nicely.

SoxXpupPeT

iTrader: (34)

thats what ive heard and it makes sense. my goals tho arent all power. i Need fuel efficiency. now if the different is going to be minimal (1-2 mpg) between the 4.8 and the 5.3 then of course ill go with the 5.3. what mpg do you think those engines would have in carbed form compared to efi ?

i should of mentioned earlier that i have a 700r4. what would be needed to make that work with either engine ? i had read somewhere that you need a spacer or something like that ?