mr gtx
Active Member
mild rebuilt 440 with light weight pistons and thinner rings and one up from stock cam up and running in my 67 newport, was a 383-2 single 2" exhaust. just breaking in but has plenty of low and mid range power seems a little weak above 4800 rpms right now. will be interesting to see what the 2.5 dual will do, going to start putting the waldron on today. they made me 2.5 exhaust and 2.5 mufflers in and out and then 2.25 tail pipes coming out. stock would have been 2.25" mufflers in and out with 2" tail pipes they told me. two concerns , one is the mild impostor mufflers will be too loud but they are 28" body. the other concern is the hangers that will work for tail pipe just after the muffler. hoping to add at least 30 HP.