New to chevy trucks, build questions

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thanks for the response! so....motor tranny combo would work..
--i def agree about the motor and being able to hear it, but aside from that most 350 motors around that price MIGHT be a good find??

--as far as the transmission i searched for the 700R4 because it seems to be the most popular upgrade is that correct? are there any other compatible automatic transmissions anyone would recommend? And what price range should i be looking at? that 700R4 seemed a little low, and by saying "I don't know how good of a rebuild you are going to get.." did you mean that trans might need to be rebuilt?

sorry for all the unresearched/mis-asked questions...tony