#21

06-19-2019, 11:03 AM

GTOGEORGE

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Join Date: Mar 2003

Location: South Rockwood, MICHIGAN

Posts: 8,884

Quote:

Originally Posted by taff2

Take a look at the timing mark on the plugs earth straps,this will point you in the right direction. Not the same engine I know-but we used to run 32-34 degrees on a 6V-71 blown BBC at around 12 psi , and this was safe. Every 2 degrees extra we put in gave us 50hp more according to the time slips.

Yea thats probably the best way!

GTO George

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