The Jalopy Journal
The exhaust guide clearance should be 2.5 and INTAKE is 1.5 with new SS valves... The valve spring installed height is 1.5 on the 53-58 nailhead...
Yes, I have all the water pumps and timing covers listed in my website Nailheadbuick.com so you can compare the differences. The 59-61 timing...
As Zman said why spend all that money for an adapter when you can bolt on a st400, you will need a 64-66 type flex plate but balanced for the 364,...
You can also use a 61-62 third member in the 56-60 rearend to convert to open drive. I have a bolt in starter for the 57-60 blocks with the st400...
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The Jalopy Journal