Every chevy motor I've owned needed(and got)a new timing chain and gears--mostly due to the junk nylon toothed cam gear--if your motor has that style gear,get rid of it--all of my motors had the nylon teeth stuck in the oil pump screen,and more than 1 tooth probably made it into the pump.I did the timing chain and gears in the 305 I put in my 79 C10 due to this,and a new oil pump and drivshaft(steel sleeve instead of the plastic POS factory one),it only cost 22 bucks for Cloyes timing chain and gears,12.99 for a stock melling oil pump,5.99 for the driveshaft/steel coollar dewhickey at autozone--well worth it to me for peice of mind on the highway--and I am the cheapest &(^$$ there is /forums/images/graemlins/deal.gif--some things you just shouldnt skimp on! /forums/images/graemlins/crazy.gif
I agree 250 bucks is a lot of cash to put the chain and gears on--even if it meant pulling the radiator and water pump and timing cover,its still pretty steep,unless its in a van or a really difficult truck to work on.... /forums/images/graemlins/thinking.gif