[Dragncar]

When you look at this stuff its hard to compare the power a big Rat engine make with its higher flowing heads and shorter strokes. They always seem to make their power with less carb.
The way I understand it is Pontiacs have a longer stroke than most engines so they can take more carb than a given BBC-HP combo. (ever hear a 455 bog ?)
I don't know if I ever heard of a 1000HP Pontiac doing it with a 950 or 1050 like you hear about the large rodent engines.
Then you have the actual flows of carbs vs what is on the box.
These are wet flow numbers given to me by a LA based carb outfit.
850 cfm= 956 cfm wet
1050=1121 cfm wet
1150= 1176 cfm wet
1250= = 1306 cfm wet.
You can gain 20-30 cfm with polish work and milling throttle blade shafts.

[PAUL K]

Originally Posted by Dragncar

When you look at this stuff its hard to compare the power a big Rat engine make with its higher flowing heads and shorter strokes. They always seem to make their power with less carb.
The way I understand it is Pontiacs have a longer stroke than most engines so they can take more carb than a given BBC-HP combo. (ever hear a 455 bog ?)
I don't know if I ever heard of a 1000HP Pontiac doing it with a 950 or 1050 like you hear about the large rodent engines.
Then you have the actual flows of carbs vs what is on the box.
These are wet flow numbers given to me by a LA based carb outfit.
850 cfm= 956 cfm wet
1050=1121 cfm wet
1150= 1176 cfm wet
1250= = 1306 cfm wet.
You can gain 20-30 cfm with polish work and milling throttle blade shafts.

You sure you don't have those backwards? Usually things flow less with air and liquid compared to just air.

[Dragncar]

Originally Posted by PAUL K

You sure you don't have those backwards? Usually things flow less with air and liquid compared to just air.

Numbers I have.
850 dry=1030 cfm
150 dry= 1213 cfm
1150 dry=1272cfm
1250= 1413 cfm dry