There is a HUGE difference between a junkyard 351 someone buys, slaps a carb on and puts in his fox, and a 351 truck block someone builds, with the right parts. My fathers 393 came out of an old van. Has been 9.88 all motor, but I can assure you there is a bit of work done to it that your local yokal isn't doing with his junkyard swap.
Sasha, where did the 351 come from a and exactly what parts did he put on it?