350 or 454?

[Wrecked1982]

so ive been running a 81 c30 350 4 speeds but this fall i scored on a very clean 85 k35 454 th400 . at first the 454 consumption was terrible .20$ of fuel for 20 minutes of driving. after rebuilding the carb. and set timming properly id say it must have gone haft better at least on fuel consumption. it now runs very well and respond very fast .but when going down the road when i smash it down it kicksdown and accelerate normaly and thats it . i dont event feel beeing pushed back in the seat . its almost like my old c30 has as much torque. by the way its the first 454 i drive ever, so maybe i was aticipating too much from a bigblock?? should i keep it that way or should i swap for the 350 witch seems to be as powerfull as the 454 and cost wayyyyy less fuel......