2 bbl. Motorcraft & a dwell cam

Dave Noll · 11-12-2013, 04:16 PM

On my 351C 240hp combo, the cam that the grinder sent me dwell's @ max lift for 60 degrees. The lowest the idle will go down to is about 1600 which isn't the issue. To get that idle with that cam I have the idle plate screw down about as far as it will go. which has the transition slots completely uncovered & I have a 1/4" hole drilled in each throttle plate. With so much air going thru there @ idle it's pulling fuel out of the boosters. I closed the needle valves, lowered the float level, & drilled out the fuel inlet (seat) to .125. The idle is cleaner now but the plugs are still dark.

Do I just live with that & jet for down track or am I just completely out in left field ?

11-12-2013, 04:16 PM	#1
Dave Noll Senior Member Join Date: Nov 2007 Location: Div. 6, Eastern, WA Posts: 709 Likes: 2,636 Liked 238 Times in 111 Posts	2 bbl. Motorcraft & a dwell cam On my 351C 240hp combo, the cam that the grinder sent me dwell's @ max lift for 60 degrees. The lowest the idle will go down to is about 1600 which isn't the issue. To get that idle with that cam I have the idle plate screw down about as far as it will go. which has the transition slots completely uncovered & I have a 1/4" hole drilled in each throttle plate. With so much air going thru there @ idle it's pulling fuel out of the boosters. I closed the needle valves, lowered the float level, & drilled out the fuel inlet (seat) to .125. The idle is cleaner now but the plugs are still dark. Do I just live with that & jet for down track or am I just completely out in left field ? __________________ Dave Noll, EF/S ,?/SA 6526