SS101

iTrader: (2)

i know that a lot of factors affect fuel miliage, but suppose a 346ci and a 427ci shared the exact same set up (turbo cam, 225cc afr heads, all the bolt ons, and a 15psi twin turbo set up) and say that the 346 gets ~30mpg - with the same trans/rear end gearing - is it even possilbe to ball park the stroker's mpg?? or is it much to complicated for so simple of a solution?

headed-ws6

iTrader: (34)

Are the cams different and are you running same size injectors? I would say you might get decent mpg maybe 20-25 possible at most. Turbos are pretty good about that, but when going with a 427 gas mileage losses its meaning haha.

staringback05

iTrader: (8)

it can depend on the gear and tune primarily....

SS101

iTrader: (2)

346 = ls1 cam and ~65lb injectors
427 = ls7 cam and ~95lb injectors