I can say if you go over 2 1/4 you may want to get a fairly stockis muffler to keep the noise down! I run 2 1/2 on mine and actually have a glass pack under the rear floor acting as a resonator before going over the rear axle to a Dynomax super turbo sitting in the stock rear position. Either muffler on it's own was too loud for me with the 2 1/2 pipes. -- Mark Price Morgantown, WV 1969 AMC Rambler, 4.0L, EFI, T-5 2004 Grand Cherokee Laredo, 4.7L, Quadratrac II " I realize that death is inevitable. I just don't want to be around when it happens! " -------------- Original message ---------------------- From: M Walter <redamc1963@xxxxxxxxxxx> > > Hello, I am building a performance 258 for my american. I am trying to gather > all necessary parts before taking out the old drive train, which is a 196ohv. I > have nearly all of the big stuff; a 1972 258 block milled.010, bored .050, 4.0 > rods, buick 3.8L recessed pistons(to match comp. height), moly(top) rings, head > milled .060(it had a thin steel gasket), mild port and polish, hardened exhaust > seats, stock size SI undercut stem valves, small(411/413) crower cam,springs,and > retianers, '83 intake/exhaust manifolds, autolite 2150 1.21 carb. I've also got > a t5 and a ranger 3.55 rear end. I Know there is a lot more stuff I need like a > distributor and such. But what I would would like to know is what is the stock > exhaust/muffler size of the 258. I'd like to go a little larger, but it has to > be quiet or really mellow. All comments or advice would be appreciated. > THANK YOU, Matthew Walter > _________________________________________________________________ > Talk to your Yahoo! Friends via Windows Live Messenger. Find out how. > http://www.windowslive.com/explore/messenger?ocid=TXT_TAGLM_WL_messenger_yahoo_0 > 82008 > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > http://splatter.wps.com/pipermail/amc-list/attachments/20080816/29a00622/attachm > ent.htm > _______________________________________________ > Amc-list mailing list > Amc-list@xxxxxxxxxxxx > http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list