Slant 6 Turbo 68Dart Project

I'm not sure on the squirter size. I didn't know those could be replaced. I just jumped from the two 61's to two 65s. Pepboys now has an aisle dedicated to carburetors and (mostly) Holley parts. They had some 61's (which I already had) or 70's in the realm. 70 seemed like too much of a leap. I went with 65's for about $6.00 and they have definitly bumped the cruising speed AFR back into the 13's. When it's at WOT though - I still get a drop between 12-14. I feel maybe increasing the size of the PVCR's would help this?