bluebird, Do yourself a favor and get a Maintenance Manual. I will list a few specs from mine for you. These are for the 228, 248, and 270 engine.

According to the manual, these values are for threads that are clean and dry. If threads are clean and oiled, values can be reduced about 10 %. Values are in ft/lbs..

Connecting Rod Bolts - 40-45
Cylinder Head Bolts 90-100
Main Bearing Cap Bolts 90-100

Here is a picture of the head tightening sequence.... . Be sure to tighten those head bolts a little at a time. I started at 45 , then went to 75, and then to 95. Go slow..

Bill M
53 GMC Hydra-Matic

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