850 cfm proform carb on 318!!!!
I feel like a mad scientist.......................:glasses9:
I am selling my 750 double pumper on my 318 cuda and will be installing a 850 proform carb.
Why would i try such a foolish thing ........................
I am basing this on David Vizards testing done on a 383 chevy.
He installed three different carbs flowing.......
740 cfm
920 cfm
1030 cfm.
The 1030 cfm carb made the most horse power and gave up NO torque down low in the rpm band.
This goes against all traditional thinking but it worked for him.
The reason it works-- according to Dave -- is due to the carb being installed on a two-plain intake.
The carb only sees half the engine with a two-plain intake (180 degrees)
Dividing 1030 cfm by 383 cubic inches = 2.6892
2.6892 x 383 cubic inches = 1029 cfm
This is the percent ratio I did for his test comparing cubic inch to cfm.
----------------------------------------------------------------------
Dividing 850 cfm by my 323 cubic inch engine = 2.6315
2.6315 x 323 = 849 cfm
My 318 bored .030 over = 323 cubic inches.
It has adjustable idle feed jets so i can lean it for the small cubes.
My 318 is gonna love this thing.=D>
I have a 3000 converter and 3.91 gears so she will sing up high for sure.
This 318 is begging for the 8 3/4 I'm getting with 4.56 gears and slicks.
I feel like a mad scientist.......................:glasses9:
I am selling my 750 double pumper on my 318 cuda and will be installing a 850 proform carb.
Why would i try such a foolish thing ........................
I am basing this on David Vizards testing done on a 383 chevy.
He installed three different carbs flowing.......
740 cfm
920 cfm
1030 cfm.
The 1030 cfm carb made the most horse power and gave up NO torque down low in the rpm band.
This goes against all traditional thinking but it worked for him.
The reason it works-- according to Dave -- is due to the carb being installed on a two-plain intake.
The carb only sees half the engine with a two-plain intake (180 degrees)
Dividing 1030 cfm by 383 cubic inches = 2.6892
2.6892 x 383 cubic inches = 1029 cfm
This is the percent ratio I did for his test comparing cubic inch to cfm.
----------------------------------------------------------------------
Dividing 850 cfm by my 323 cubic inch engine = 2.6315
2.6315 x 323 = 849 cfm
My 318 bored .030 over = 323 cubic inches.
It has adjustable idle feed jets so i can lean it for the small cubes.
My 318 is gonna love this thing.=D>
I have a 3000 converter and 3.91 gears so she will sing up high for sure.
This 318 is begging for the 8 3/4 I'm getting with 4.56 gears and slicks.
