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Old 05-19-2017, 09:40 AM   #111
RobbieRacer
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Default Re: My 88 Olds wagone U/SA 10 Pennies

Did they deck the block ? If not that could be the reason.
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Old 05-19-2017, 11:37 AM   #112
SSDiv6
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Default Re: My 88 Olds wagone U/SA 10 Pennies

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Originally Posted by Jeff Stout View Post
Also I was surprised when removing torque plate cylinders were. 0015 out of round up top. Bolted plate down again and checking cylinders were round again. It surprised me.
Normal for the the Oldsmobile 307 and 403 blocks.
They are of a lightweight design, light and have scalloped and windowed mains. For a full race engine, you can fill the block and used a girdle, or sleeve to a 307 bore size, a 1968 thru 1971 high nickel block.
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Old 05-19-2017, 11:45 AM   #113
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Default Re: My 88 Olds wagone U/SA 10 Pennies

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Originally Posted by SSDiv6 View Post
Normal for the the Oldsmobile 307 and 403 blocks.
They are of a lightweight design, light and have scalloped and windowed mains. For a full race engine, you can fill the block and used a girdle, or sleeve to a 307 bore size, a 1968 thru 1971 high nickel block.
Yes block was filled to bottom of water pump holes. Didn't know we could run a stud girdle. Ill look into that. Block was decked. We actually had to cut .034 to get zero deck. I have a 71 350 block but being a budget build I didn't want the expense of sleeving down to 307 bore
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Old Yesterday, 01:36 PM   #114
Jeff Stout
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Default Re: My 88 Olds wagone U/SA 10 Pennies

Slow progress but progress. Cleaned up oil passage on main cap. Removed burr on hole entrance and the port to block had a large restriction dog leg in it. So I straightened dog leg in port. The oil hole in block was about .060 smaller then oil hole in cap so I matched those. Drilled and tapped passeges in main caps to run oil restrictors.

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