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Tech Question
Paul Mc Gough, Bakersfield, CA, 1973 Plymouth Duster 318
Hey Rich,
I got a question on exhaust. Right now I have a
stock '73 318 duster and have a set of hooker headers (5901 HKR) and 2-1/2"
pipes with Flowmasters. I'm building a 360 with 340 J heads. My issue is the
headers on the driver side hang down low and has already flatened two tubes.
I have been thinking of going with the hedman short headers (hed-78500) and
an X pipe to replace the speedbump finders. Do you think I will lose a lot
of power with this set up? Thanks, Paul Mc.
Paul-
It depends! If the engine will basically stock, not a cammed-up, single-plane high-rev deal, then the loss, if any, will be small. However, once the HP gets north of 400 or so, the engine -- if you look at the dyno curve -- will begin to "nose over" (lose HP) too early in the RPM range, so you'd be killing HP and not even picking up any mid-range.
Rick
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