96 Chevy 454

[john spears]

There was some talk in digest #88 about the 96 454 Chevy. This engine: RPO
L29 is actually a true sequential port fuel injection engine with 8
injectors mounted on a fuel rail in the usual manner. The 96 small-blocks
for trucks, i.e., 5.0L (RPO L30), and the 5.7L (RPO L31), are in fact
sequential central port injected engines. GM refers to this as "SCPI". These
engines use a group of eight injectors molded together at the top of the
intake manifold, with a tube and poppet valve from the bottom of each
injector down to it's respective port. The 4.3L for 96 also takes on this
form. These engines become more difficult to adapt to other applications
using their original ECM's due to the added complexity of OBD II regulations
for 1996. The 454 however could be set up pretty easily using an earlier
small block TPI ECM.

               John Spears
     Speartech Fuel Injection Systems