Re: IML: new exhaust system & theory

[sosmi@xxxxxxxxxxx]

Dan, the log style manifolds would be fine. The pipe to the mufflers(21/4") is plenty, the tail-pipes also 21/4", for mufflers I liked the stock 440 RoadRunner type, also 21/4" in and out. You can add the H pipe, for a little HP, and Torque gain. I used the Walker 21848 muffler, but they also show a ULTA FLOW SS 17287 as well. I used this system on my 67 Crown,69 T&C Wagon, 77 Gran Fury Cop. 78 NYB, turn your head, and you thought it was a RR.All sounded nice outside, windows-up air on, couldn't tell inside. Ya'll have a nice day, Dave.

 

> -------------- Original message -------------- 
> From: therichardsonfamily@xxxxxxxxxxx 
>
> > Here is one for the OEM supporters, Rodger & Dave: 
> > 
> > I now have my cooling system flushed out (thanks Dave) and the old '67 Imp motor 
> > (required content) runs fine in my 300L. Time to do some driving, and the two 
> > "Cherry Bombs" hanging from the head pipes need to go in the dumpster. 
> > 
> > Recent discussions about low RPM torque loss, with lower backpressure, leads me 
> > to ask this question of the theorists. With no intentions of 4000+ RPM, or 
> > racing, I would like that "muscle car" sound on this old L. I seem to have only 
> > the left side (4 of them) of HP exhaust manifolds in the basement - the stock, 
> > log types will be just fine, right? Also, I should leave the ID of the head 
> > pipes equal to the ID of the man
> ifold exit, right? 
> > 
> > Is it equally important to keep the same ID all the way to the tailpipes? Or, 
> > is a bigger pipe after the muffler helping anything out? like the tone? or 
> > performance? Louder mufflers aren't going to hurt my low-end torque, are they? 
> > 
> > Thanks in advance for the comments, I value your experience and advice 
> > immensley. 
> > 
> > Dan Richardson 
> > 300L Family Heirloom 
> > 
> > 
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