T That50 New Member Apr 4, 2005 44 0 0 Houston,Tx Apr 26, 2005 #1 Apr 26, 2005 #1 Just bought a 302 block bored 30 over. Now, I was told that inorder to get a 331, it had to be bored 40 over, and the pitons 40? Is this true? Should I stick w/ a 331 or go 347. Please state why, etc..
Just bought a 302 block bored 30 over. Now, I was told that inorder to get a 331, it had to be bored 40 over, and the pitons 40? Is this true? Should I stick w/ a 331 or go 347. Please state why, etc..
fly4spd New Member Jan 20, 2004 118 0 0 Las Vegas & Reno Apr 26, 2005 #2 Apr 26, 2005 #2 302 block bore - 4.000 stroke- 3.00 = 301.6 bore - 4.030 stroke- 3.00 = 306 bore-4.00 stroke- 3.25 =327 bore-4.030 stroke - 3.25 = 331 personally i like the 331 (building one right now) more because a better rod ratio (i think that's the term) and i want to be a little different.
302 block bore - 4.000 stroke- 3.00 = 301.6 bore - 4.030 stroke- 3.00 = 306 bore-4.00 stroke- 3.25 =327 bore-4.030 stroke - 3.25 = 331 personally i like the 331 (building one right now) more because a better rod ratio (i think that's the term) and i want to be a little different.
UMDSmith Member Feb 10, 2004 226 0 17 Salisbury, Maryland Apr 26, 2005 #3 Apr 26, 2005 #3 Ive never heard of a .040 bore for anything standard
R ratrapp New Member Apr 24, 2004 510 0 0 buena vista,va Apr 26, 2005 #4 Apr 26, 2005 #4 we've bored engines .030,.040,.060 and .090 and .120 on some bb chevys.