Posted by mike stone on Thursday, September 12, 2002 at 7:17PM :
In Reply to: compression of 251 ci flathead posted by Doug Boeve on Thursday, September 12, 2002 at 9:41AM :
says
anything under 100 or if there is a variation
of more than 10 psi between cylinders then
"a tune up will be of little value"
probably the same for a 251