Nebr_Rex said:The 1850 Holleys are known for an off idle bog. I run one on my 85 F150 during the winter. The problem centers around the transfer slot
at the primary butterflies. I ended up drilling one of the air jets and drilling a hole in the primary butterfly. I haven't seen a Chevy around
my neck of the woods of that vintage without rust in 35 years.
I haven't drilled any air jets. I have the bog sorted for the most part, though it wants to rear it's head every now and then.