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I can get a good deal on a new 5.7 truck motor and a frend has a fast xfi that he never used that I can get for cheep. Really I would like to put a t56 in in but I have a fresh non lock up 518 laying around. The 440 is ok was suposed to be fresh when I got it. If never really impressed me stock cam 915 heads. It will detinate with out 93 octane gas and im lucky if it gets 10 mpg even on the high way. I think it will end up costing me around 4500 to do the swap with me doing the labor. I also realize 4500 will buy alot of gas for the 440.



Something is big time wrong with your 440 if a "fresh" 440 with a stock cam is only getting 10mpg. With a fresh 440 with decent compression pistons and a stock cam and 727 with some granny highway gears in the rear you should be knocking down mid-upper teens even in a station wagon that's no doubt heavier than a regular b body. Did you take the time to jet your carb properly and tune your distributor advance (initial, total and vacuum)?