Re: [Classic Mustang] Re: Hello- 67 Problems

I'm no expert, but you may have too large a carb.  We bought our 67 coupe 289 (40 over) with a 650 cfm.  We backed it off to a 550.  Try this CFM calculator to see what size you should have: http://www.4secondsflat.com/Carb_CFM_Calculator.html /r Brad Eyre Woodbridge VA --- On Mon, 3/9/09, MIKE <myedsel@yahoo.com> wrote: From: MIKE <myedsel@yahoo.com> Subject: [Classic Mustang] Re: Hello- 67 Problems To: classicmustang@yahoogroups.com Date: Monday, March 9, 2009, 11:36 PM Original ignition? you need to upgrade it and then do a plug check to check the jetting in the carb. Mike --- In classicmustang@ yahoogroups. com, "beharsteven" <beharsteven@ ...> wrote: > > --- In classicmustang@ yahoogroups. com, bassmasters13 <no_reply@> wrote: > > > > Hello guys, quick question, possibly long answer: > > I've just installed my new 600 cfm Edelbrock Performer carb and > > Intake mfld in my 1967 Mustang (289). My problem is, when i push it > > to 75 to 100% throtte, it seems to lose acceleration dramatically. > > When it shifts to 2nd, it improves a little, but sinks in to the same > > pattern. This seems to happen at around 40MPH. > > Any response would be greatly appreciated. > > Thanks! > > Tony

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