Posted By: Streetwize
Was the SP2P Intake concept just 50 years Ahead of its time? - 07/10/23 03:47 PM
For those who don't remember the Edelbrock sp2p it was based on the 180 degree firing order of a conventional dual plane only it had (smaller cross section) individual runners to each plenum with not shared "criss cross" plenum intersection between the left and right banks.
The concept was to improve torque and fuel efficiency (high velocity cylinder filling for near peak VE) at high load/low engine speeds during the early 70's gas crisis.
The trouble was, from a performance standpoint the individual port runners were too small to feed the engine very well at higher engine speeds.
I have always wondered if the same architecture would work very well today with modern port design/cross sectional area and flow with positive taper toward the plenums (like a modern Single plane) with the added benefit of modern fuel injection. It seems this type of design would smooth out the induction pulses (signal to a carb) and eliminate the low RPM cylinder to cylinder "robbing" that goes on with conventional single or dual plane manifolds.
I also can imagine the center divider that could retract up and down into the plenum floor at High RPM (utilizing EGT closed loop tuning software in order to optimize HIGH RPM power, similar to the V-boost system used on the old Yamaha V-Max V-4 motorcycle engines (ihad one back in the 90's lol). Either via a vacuum transducer or even a small servo motor. I cant imagine the intake being much taller than a conventional Dual Plane.
This technology is relatively inexpensive today even though this was "Buck Rogers" back in the 70's
Anyway, just thinking out loud. I always thought it was a cool concept. I always wanted one to play with and maybe to put on a super fuel efficient 273 or max port one for a 318 or even a 360 torque motor.
Of course ....if it was or became a good idea worth developing, I'm sure it would be mass-marketed to the bowtie boys long before we would ever see one!
I know there a lot of creative minds out in moparts land way smarter than me, so please feel free to comment!!
The concept was to improve torque and fuel efficiency (high velocity cylinder filling for near peak VE) at high load/low engine speeds during the early 70's gas crisis.
The trouble was, from a performance standpoint the individual port runners were too small to feed the engine very well at higher engine speeds.
I have always wondered if the same architecture would work very well today with modern port design/cross sectional area and flow with positive taper toward the plenums (like a modern Single plane) with the added benefit of modern fuel injection. It seems this type of design would smooth out the induction pulses (signal to a carb) and eliminate the low RPM cylinder to cylinder "robbing" that goes on with conventional single or dual plane manifolds.
I also can imagine the center divider that could retract up and down into the plenum floor at High RPM (utilizing EGT closed loop tuning software in order to optimize HIGH RPM power, similar to the V-boost system used on the old Yamaha V-Max V-4 motorcycle engines (ihad one back in the 90's lol). Either via a vacuum transducer or even a small servo motor. I cant imagine the intake being much taller than a conventional Dual Plane.
This technology is relatively inexpensive today even though this was "Buck Rogers" back in the 70's
Anyway, just thinking out loud. I always thought it was a cool concept. I always wanted one to play with and maybe to put on a super fuel efficient 273 or max port one for a 318 or even a 360 torque motor.
Of course ....if it was or became a good idea worth developing, I'm sure it would be mass-marketed to the bowtie boys long before we would ever see one!
I know there a lot of creative minds out in moparts land way smarter than me, so please feel free to comment!!