Mkuhn138
1/2 ton status
This is a GM Performance part number gm12486574. It's a single plane intake manifold for Vortec style heads. It was used by GMPP on many of the ZZ4 crate motors - including their circle track engines. The listed RPM range of this manifold is 2500-7500 rpm - I would say that in terms of application this manifold is between a Performer RPM air gap and a Vortec Jr. It's in perfect condition and is port matched to GMPP Fast Burn heads. It's a square (4150) flange. I'm selling because I'm converting to MPFI and it's cheaper to replace with a super victor than it is to machine this manifold- otherwise I would have no interest in switching. If you are building an aggressive vortec headed small block this is the perfect manifold. Asking $185 plus shipping.
Also, the photo of the manifold by itself is not my manifold - it's just for reference. The photo of it on the motor is mine, and it will stay on the motor until it's sold.
Also, the photo of the manifold by itself is not my manifold - it's just for reference. The photo of it on the motor is mine, and it will stay on the motor until it's sold.
