C chuckwagon2004 71 dartswinger Joined Feb 9, 2008 Messages 520 Reaction score 15 Location Palestine Texas Mar 2, 2008 #1 Whats the differnce between the two castings???
C chuckwagon2004 71 dartswinger Joined Feb 9, 2008 Messages 520 Reaction score 15 Location Palestine Texas Mar 7, 2008 #2 no one????
P perfacar Well-Known Member Joined Mar 1, 2006 Messages 1,300 Reaction score 592 Location renton,wa Mar 8, 2008 #3 hi, theres not much difference, the 587 will out flow the 974. especially in the mid lift area. the exh port is slightly smaller on the 974. the 587 is prefered, with the mopar SS valves, and some minor bowl work, will flow very well.
hi, theres not much difference, the 587 will out flow the 974. especially in the mid lift area. the exh port is slightly smaller on the 974. the 587 is prefered, with the mopar SS valves, and some minor bowl work, will flow very well.
