djhoth

I have a 74 olds 350 block, I know the bore when new was 4.057. At what measurement would I go bore instead of just a hone? The block has high comprsn pistons and I am on a budget, the cost of new pistons and boring pushes my budget costs a bit. I would like to save some of that money for a new rear end. Any help is appreciated.
Thanks

scubastever

i found this question highly interesting.

djhoth

I honestly dont know if you're mocking me or if you truly find my question interesting.

66ninetyeightls

I don't believe hes mocking you. He is most likly interested in the answer for himself and replying to the thread will now subscribe him to the thread to get the answer.

djhoth

Oh ok please excuse my rookie ignorance.

captjim

It depends on the bore size and wear and how much needs to be honed out to true it up. If the bore gets "big" then you will have too much piston/cylinder wall clearance and the ring end gaps will be over spec. It really depends on the mileage and condition of the block, but in most cases, budget in boring and new pistons. Yes, you can dingleberry hone it and re-ring, but if the bores are not decent, you will lose ring seal.

tonycpe

350 pistons , save on the bore job . but not with a dingle ball hone
http://btrperformance.com/phpbb/view...hp?f=28&t=1874

Rickman48

Perfect answer - even where to get and pricing! Answers everything!
Great job, tonycpe!!

olds 307 and 403

Measure and tell us, CaptJim should know. He is a mechanic and works at a machine shop. If it looks good, dingle berry hone and measure.