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Message Subject Mopar guys, Nick dyno tests 440 6-pack, Max Wedge 'up ram' exhaust manifolds against factory high performance manifolds. Whoa!
Poster Handle DGN
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Very good Nick, now you know what every B/RB guy since the beginning of time knows- the factory HP exhausts are crap. 1rof1
I would have liked to see him use a set of fender well headers though, cast iron or steel the way they have to hug the block to keep everything inside the engine bay isn't doing the flow any good.
 Quoting: Peter W Morgan

I would like to see him compare the 6-pack to a 750 Edelbrock. Reason is the center carb is rated 350 cfm, outboards are 500 each, 1350 cfm is fine for 600 cid, but low velocity for 440. Notice how poorly the gas flows from the outboards, spurts doesn't even vaporize, poor combustion. Sure looks good though. Factory rating was 390 HP 6-pack, even 750 would be max size.
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