[Barry_R]

Undy
Sorry for the delayed response - - crazy busy.....

We had one of the guys on Netwerk 54 pull a BJ-BK and a 0-150 apart and measure every possible orifice. They were essentially the same - no significant changes of any sort in terms of metering. I have no recent experience with the original carbs, but have run the repops on the dyno. They were really rich on a +/-500HP 427. So rich that I ran out of small jets for the primaries. It kept picking up power each step down - but at least it was not gonna hurt anything.

It makes sense that the 1850 and the Ford carbs were similar - the 1850 was originaly a Ford production single 4V carb. I've approached Holley about a non-repro dual quad pair with some changes - revised metering, downleg boosters, etc - but have never been able to put the deal together...