I've got a 1997 240 Baja with a L-29 454 engine #OK154877 block #102372297. The head casting number is 10114156. This number comes up a peanut port heads. Was it common for early L-29 engines to get small port heads? Did all L-29 numbered engines get roller cams?
Thanks Guys

The L29 Head casting 279 didn't start showing up until 0L Serial Numbers.

The L29 has the throttle body in the center of the intake, rated at 310 HP

Just a little confusing. Block numbers come up as 96-and up 454 4 bolt vortec 7400 Gen 6. One place lists it as L-29. I know it has peanut ports and not vortec heads. It has factory carb and appears to be all original. Wondering if this was a transitional engine. I'm assuming so but unsure if it is a roller cam engine.

The L29 is the 7.4MPI
https://www.perfprotech.com/blog/boa...marine-engines

This particular engine model ran between 1997 & 2001 and was also used for both Sterndrive and Inboard Engine applications. There was also an automotive version of this engine used in Truck applications being known there as the Vortec 7400. These engine were rated at 310 Hp and made around 400 Ft-Lbs torque. The L29 Model Version is quite easy to identify based on the location of the throttle body at the middle of the intake plenum along with the 2 separate composite plastic engine covers mounted on top of the engine. These engines having been discontinued by General Motors, now present a problem when repowering because there isn’t a “Drop-In” direct replacement option available. Most of the boats which were equipped with this particular engine model were considered a little weak on power and resulting performance. There the Small V8 Marine Engines being offered today as a replacement repower option struggle to provide customers with a good replacement option. The following options are available when repowering this particular 454 model.