The most common cause of that problem is that the accelerator PUMP that is inside of the carburetor needs REPLACED. Get someone that knows those kind of carburetors inside and out to REBUILD it for you. I would also CHECK the timing and vacuum advance on the distributor too. I believe you will find your problem in those areas.
It would have more power and use more gas.
Horsepower TV - 2006 454 meet '85 Monte Carlo was released on: USA: September 2009
yup
gas or diesel
yes
There are 14 Pounds in a stone and .454 kilograms in a pound so 8.5 * 14 * .454 = 54.026 Kgs
1-8-4-3-6-5-7-2
For most GM 'trucks' in 85 where sill used a carb in 86 light and some heaver trucks tbi.
roughly 3-4 quarts more like 3.5
85
http://www.suspensionconnection.com/cgi-bin/suscon/167214.html
yes , they are the same bolt patters , might have to change light connections , just put a 85 Scottsdale radiator support on my 91 suburban