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My (very)limited understanding was that the headers caused it to run lean......
Also, the re-built head was stock, but really made a huge improvement. I was able to actully squeal the tires a bit!!!
I credit the 28 mpg to 1. rebuilt head 2. header/exhaust setup 3. larger tire 4. monitor
My dream is to pick up a restored mustang and do a straight 6 with 3 carbs and a newer trany (4 speed/od). ohhenhouser made a 3 carb addapter that used 2 smaller ibbl carb as "secondarys" that only kick in at 3/4 throttle.
I would probqbly run a 250 head on the 200 block.
THe problem w/ the 6 cylindar models was the front spendels were so small, compared to the v8.
Oh, and I had lowered my front A-arm 1 inch and ran shelby spec alignment. Also ran a rear sway bay. (made all the difference in the world!)
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