norvalwilhelm
Well-known member
I have run my motor through Desk top Dyno, knowing the specs on the engine and having the heads privately flowed I could fairly accurately fill in the blanks. It spit out 940 horse and I forget the torque. I did look for the sheet but can’t seem to find it.
I am in the process of pulling the motor down for a routine check and changing the heads to a large set of ported Brodix 2x.. I want 3X with the 360 cc intakes but they sold them bair and I wanted them complete.
Horsepower that a head can support is roughly .254 times CFM of head times number of cylinders equals horsepower theoretical.
Intakes loose roughly 15 to 25% of that flow.
This is a shot of my intake port in the intake manifold and the 340 cc intake right to the 2.25 valves. Image 12 pounds of boost blowing through those ports. With a blown motor the flow doesn’t go down because of the intake it increases.
This is a shot of the 4 ports on one side. As you can see part of the intake doesn’t perfectly match with the head. I would correct this if these heads were going back on.
The motor has been run for 5 years without touching it.
This is a shot of the intake side of the blower. It holds 2 850 double pumpers or 1700 cfm. The blower is designed to handle a 568 cubic inch motor 8-71.
The openings are 5 ½ inches by 4 inches each or roughly 40 square inches in total
This is the business end. Again about 40 square inches of output at 12 psi when under load. The plenum in the intake is huge, pressurized to the 12psi breathing through 340 cc ports.
The sound of a blower motor under load is something you will never forget
It is always said the power of a motor is in the heads, not the block. A blower makes those heads breath far more then any natural aspirated motor ever could.
I am in the process of pulling the motor down for a routine check and changing the heads to a large set of ported Brodix 2x.. I want 3X with the 360 cc intakes but they sold them bair and I wanted them complete.
Horsepower that a head can support is roughly .254 times CFM of head times number of cylinders equals horsepower theoretical.
Intakes loose roughly 15 to 25% of that flow.
This is a shot of my intake port in the intake manifold and the 340 cc intake right to the 2.25 valves. Image 12 pounds of boost blowing through those ports. With a blown motor the flow doesn’t go down because of the intake it increases.
This is a shot of the 4 ports on one side. As you can see part of the intake doesn’t perfectly match with the head. I would correct this if these heads were going back on.
The motor has been run for 5 years without touching it.
This is a shot of the intake side of the blower. It holds 2 850 double pumpers or 1700 cfm. The blower is designed to handle a 568 cubic inch motor 8-71.
The openings are 5 ½ inches by 4 inches each or roughly 40 square inches in total
This is the business end. Again about 40 square inches of output at 12 psi when under load. The plenum in the intake is huge, pressurized to the 12psi breathing through 340 cc ports.
The sound of a blower motor under load is something you will never forget
It is always said the power of a motor is in the heads, not the block. A blower makes those heads breath far more then any natural aspirated motor ever could.
