Single plane intake....
Thread Starter
Burning Brakes
Joined: Aug 2001
Posts: 1,146
Likes: 9
From: Troy Ohio
Single plane intake....
Can anyone tell me what are the engine requirements to run this inake...ie(head size, cam,cubes, etc...). Ive done the search but these facts are not coming up. I really like the look and smaller size of this intake. I plan on a 383 buildup here shortly and wonder if this may be easier than a superram. My car will be for street and an occasional dd.
Melting Slicks
Joined: Oct 2000
Posts: 3,426
Likes: 4
From: Heidelberg PA
Cruise-In V Veteran
If you build a decent 383 - good compression-approx 10.5, decent heads, you would have no problems with a single plane.
You may lose a bit on the line but pick it up mid & high range.
It takes longer to clean my intake for an install than installing it.
You may lose a bit on the line but pick it up mid & high range.
It takes longer to clean my intake for an install than installing it.
Safety Car
Joined: Apr 2001
Posts: 3,525
Likes: 2
From: Houston TX
typically, the single plane intakes have a 1205-1206FP (most 1206) intake port, which would match with something close to or exceeding 200cc intake runner. If your engine needs this size head, then you probably have a combo that supports a C4SP intake.
A 350 cid with LPE 219 that spins to 5500-6000 would not be an "ideal" candidate for a C4SP.
Aaron
A 350 cid with LPE 219 that spins to 5500-6000 would not be an "ideal" candidate for a C4SP.
Aaron
Last edited by AKS Racing; Jan 1, 2007 at 09:59 PM.
Instructor
Joined: Nov 2004
Posts: 109
Likes: 0
From: Texas
single plane
Not all single planes are created equal.Some have smaller cross section than others and some have greater plenum volume. Length of the runners vary also. Check the manufacturer listed RPM operating range. I would also agree that a 383 with 10.5 or so compression with 190cc or better head with cams close to 230 @ .050 duration will work well with a single plane with a lower advertized RPM operating range.
Le Mans Master
Joined: Sep 2006
Posts: 6,050
Likes: 147
From: Phoenix AZ
2021 C4 of the Year - Modified Finalist
manifold
typically, running a "wet manifold", in which there is a carburetor attached, 2 cylinders in a chevy small block run lean, and 2 cylinders run rich.
Single plane manifolds vary the volume of each runner to equalize the fuel air mix for all cylinders.
taking one of these manifolds and adding injectors to it does not follow the runner manipulation to vary the fuel/air mix, but limits the actual cylinder volume based on cylinder requirements (valve, cam timing, valve size, head configuration, etc.) and runner length, placement, and area when adding a supercharger or a turbo charger and may not be able to fill all cylinders equally.
Adding normally aspirated fuel injection to this smaller plenum/single plane manifold may prove to be a better combination for higher RPM, but lessen the torque off idle over an L98 TPI setup.
just my 2c worth
Single plane manifolds vary the volume of each runner to equalize the fuel air mix for all cylinders.
taking one of these manifolds and adding injectors to it does not follow the runner manipulation to vary the fuel/air mix, but limits the actual cylinder volume based on cylinder requirements (valve, cam timing, valve size, head configuration, etc.) and runner length, placement, and area when adding a supercharger or a turbo charger and may not be able to fill all cylinders equally.
Adding normally aspirated fuel injection to this smaller plenum/single plane manifold may prove to be a better combination for higher RPM, but lessen the torque off idle over an L98 TPI setup.
just my 2c worth
Melting Slicks
Joined: Oct 2000
Posts: 3,426
Likes: 4
From: Heidelberg PA
Cruise-In V Veteran
typically, running a "wet manifold", in which there is a carburetor attached, 2 cylinders in a chevy small block run lean, and 2 cylinders run rich.
Single plane manifolds vary the volume of each runner to equalize the fuel air mix for all cylinders.
taking one of these manifolds and adding injectors to it does not follow the runner manipulation to vary the fuel/air mix, but limits the actual cylinder volume based on cylinder requirements (valve, cam timing, valve size, head configuration, etc.) and runner length, placement, and area when adding a supercharger or a turbo charger and may not be able to fill all cylinders equally.
Adding normally aspirated fuel injection to this smaller plenum/single plane manifold may prove to be a better combination for higher RPM, but lessen the torque off idle over an L98 TPI setup.
just my 2c worth
Single plane manifolds vary the volume of each runner to equalize the fuel air mix for all cylinders.
taking one of these manifolds and adding injectors to it does not follow the runner manipulation to vary the fuel/air mix, but limits the actual cylinder volume based on cylinder requirements (valve, cam timing, valve size, head configuration, etc.) and runner length, placement, and area when adding a supercharger or a turbo charger and may not be able to fill all cylinders equally.
Adding normally aspirated fuel injection to this smaller plenum/single plane manifold may prove to be a better combination for higher RPM, but lessen the torque off idle over an L98 TPI setup.
just my 2c worth
Safety Car
Joined: Apr 2001
Posts: 3,525
Likes: 2
From: Houston TX
That was the same reason I went from the SR to the MRII way back in the late 90s. After some period of time, I seemed to pick up HP/TQ across the entire RPM range. I found the same to be true with the SP, but I no longer have the issue of 1/2 being very rich, and 7/8 being lean. The C4SP seemed to solve that issue and produced more HP/TQ on the MD.
Aaron
Aaron
