GM 3.1-3.4 #170-487 N/SMOG 10mm NEW BARE
ProMaxx Performance designed/developed this cylinder head from the GM 3.1 and 3.4 heads. This is a new aftermarket direct bolt on aluminum casting. This head is sold by casting number 170-487 only. These heads are also Non Smog applications only.
No Valves or Springs
Models: Rendezvous, Impala, Monte Carlo, Equinox, Venture, Alero, Oldsmobile Silhouette, Pontiac Aztek, Grand Am, Montana, Transport,
Engine Size: 3.1 3.4L V6
Cast #: 487 170 082 234