is it really necessary to run 91 high octane in a chevy 350 conversion? what harm will it do to use 87?
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camcruiser13 said:i run the cheapest i can find, i dont race it or need anything more than the cheap stuff
wantatlc said:Chevy 350?
wantatlc said:I have no idea of the compression nor how to find it out to be honest.
Rice said:That's really okay. If you one day have someone offer to check it for you like a buddy that turns wrenches then do it so you'll have some idea of the internal health of the engine ("leak down" test is actually better). Never the less, like the others have said, run some 87 and listen carefully for "pinging" when pulling a steep hill or accelerating. If there is no pinging there is no danger of damaging the engine. It's that simple.
If you wish to learn more about working on your own stuff go down to Autozone and borrow a compression checker, then drop me a note and will walk through "how to". Very easy.
Rice