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11-18-2015, 08:43 PM | #1 |
Member
Join Date: Feb 2009
Posts: 243
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bbc clearances
My buddy's engine is coming up a little tighter than I've been.
Drag only 427+.030 bbc with GM 1077 aluminum heads, steel rods, older Manley 12.5 pistons turning 7300 tops. Piston is out .003 and he wants to use a .039 compressed gasket. Piston to wall clearance is .005 -.007, is this quench too tight? He has loads of piston to valve clearance except radially. He used clay and has .030-.040 at the center of the piston, where the little triangle is. Too tight? Thanks for any help |
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