Re: [Chevelle-list] Carb Help

[65ss.com]

My 2cents:   My friend who has a '67 Chevelle 410+/- inch motor (bored 396) and just bought a Demon 750 Vacuum Secondary carb to replace his Holley 750 Vacuum Secondary carb.  No adjustments other than fuel bowl levels, and it took 2 tenths off of his 1/4 mile times.  It flowed that much better than the Holley out of the box.    Charles ------------------------------------------------------------------- Check out my 502 powered '65 Malibu Super Sport Project http://www.65ss.com     ----- Original Message ----- From: Matthew Post To: The Chevelle Mailing List Sent: Monday, August 09, 2004 12:58 PM Subject: [Chevelle-list] Carb Help Hey Guys, I'm having my 396 rebuilt and the builder recommended a Holley double pumper, either a 750 cfm or an 850 cfm , claiming I would get a bit more top end power out of the 850. Here what I know about the engine: 396 being stroked out to 454 Edelbrock Performer RPM aluminum heads (2.19/1.88) Edelbrock Performer RPM air-gap dual plane intake Crower Solid lifter cam - 294/304 duration and 536/556 lift at 110 centerline I think the 750 will probably be a better street carb, but how much power would I sacrifice?  Any thoughts out there?  Anyone have desktop dyno that can run the numbers for me?  That would be great!  Thanks! -Matt