Originally Posted By justinp61

My carb started as a Bigs 950HP...

Funny thing... what Bigs calls a "950" uses the 1.40" venturi main body that QFT/Proform call an "850".

The QFT/Proform "950" has a 1.45" venturi, along w/ stepped downleg boosters, rather than non-stepped downlegs their "850" uses.

shruggy