330 pulley questions
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Joined: Oct 2021
Posts: 35
From: Washington
330 pulley questions
Tearing down a 67 330 high compression engine (code G) for rebuild. Am wondering what differences, beside a 2bbl and likely different pistons(?), does it have from the low compression engine (code L). I have one of each and can use the best of the parts. Looks like the block and heads are the same (same casting #'s).
Biggest difference I see is the G code has a harmonic balancer while the L code has none. (internally balanced?).
The G code has 140K on it and was running when pulled. The cylinders mic out as standard and have no ridge. I hate to bore a block if it does not need it. Would just a touch hone do the trick?
Also, I found a good deal of metal chips in the oilpan. Need to source that out.
Any knowledge or advice is, as always, appreciated.
Biggest difference I see is the G code has a harmonic balancer while the L code has none. (internally balanced?).
The G code has 140K on it and was running when pulled. The cylinders mic out as standard and have no ridge. I hate to bore a block if it does not need it. Would just a touch hone do the trick?
Also, I found a good deal of metal chips in the oilpan. Need to source that out.
Any knowledge or advice is, as always, appreciated.
Old(s) Fart
Joined: Mar 2007
Posts: 50,770
From: Northern VA
No Olds motors were ever internally balanced from the factory. All Olds harmonic balancers and hubs have the same dimension from the face of the block to the pulley mounting face on the balancer. If your belts don't line up, you have mis-matched pulleys and brackets. Post a photo.
Registered User
Joined: Aug 2011
Posts: 4,098
Will a deglaze/hone of the cylinders do the trick? Yes.
Are the metal chips magnetic? If not they could be from the cam timing gear if it is the original.
330 HC, good engine. What are your plans for it?
Good luck!!!
Are the metal chips magnetic? If not they could be from the cam timing gear if it is the original.
330 HC, good engine. What are your plans for it?
Good luck!!!
Old(s) Fart
Joined: Mar 2007
Posts: 50,770
From: Northern VA
Once again, someone has resurrected a long-dead thread and you are responding to the old question, not the current one. I moved his post to his own thread. That was just a quote from the old thread.
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