Vintage Mustang Forums - View Single Post - Carb tuning update
View Single Post
post #4 of (permalink) Old 07-07-2019, 08:37 PM
Supporting Member
Join Date: Dec 2012
Location: Huntsville, AL
Posts: 8,408
AFR numbers look decent. You might consider dropping a couple sizes in the rear to see if you lean it out a little at WOT. Also, what do your plugs look like right after a lengthy WOT pull. Kill the engine at WOT pull over and pull a few plugs.

Not knowing much about the rest of your engine, itís hard to say if your carb is too big. However, I would suspect it is entirely too large. I know guys running well over 400hp 289ís running no larger than a 650DP. Iím only at 350hp and use a custom 650DP.

patrickstapler is online now  
For the best viewing experience please update your browser to Google Chrome