M merc40 Member Apr 7, 2012 #1 heads are stamped with numbers f85 m9. can you tell me if this tells the comp. of these heads. new to this. any info. on this is needed.reguards dick t.
heads are stamped with numbers f85 m9. can you tell me if this tells the comp. of these heads. new to this. any info. on this is needed.reguards dick t.
Flat Ernie Senior Member Apr 8, 2012 #2 My understanding is it means the compression ratio with a Ford is 8.5:1 and with a Merc is 9:1
M merc40 Member Apr 8, 2012 #3 thanks your flatness. reguards to you an yours. dick t. so simple when you don"t try to out think a question.
thanks your flatness. reguards to you an yours. dick t. so simple when you don"t try to out think a question.
