The engine will be more efficient, usually when you install headers you'll
need too richen the carb/efi/etc/ to keep up with the increased scavenging.
By your question I'd guestimate you're getting less MPG's? If so,
probably due to putting your foot in it, and felling the effects;)
> [Original Message]
> From: Durwood B. Darbin <dhckdkcsk@hotmail.com>
> To: <oletrucks@autox.team.net>; <old-chevy-truck@yahoogroups.com>
> Date: 6/4/2005 10:36:57 AM
> Subject: [oletrucks] headers = less mpg WHY??
>
> To the all wise and ever knowing list,
>
> Why would one get less miles per gallon after fenton headers were
> installed?? I thought that headers were supposed to make the engine be
more
> efficient AND give you more hose power and torque and all that stuff.
>
> Very Confused,
> Durwood
> 51 Chevy 1/2 ton Deluxe 5 window
> 52 Burb
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