Thread: 4 bolt main bolts Vs. stud kit
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Old 04-06-2006, 11:52 PM
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Jack Gifford Jack Gifford is offline
formerly 'Pontiac Jack'
  
Join Date: Dec 2004
Location: Phelps, NY 14532
Posts: 10,341
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Since H.I.S. doesn't remember (or pretends not to?)-
Front four mains studs are 1/2-13 bottom, 1/2-20 top.
Rear main studs are 9/16-12 bottom, 9/16-18 top.
('bottom' & 'top' as seen with block upside-down on engine stand)

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