Internal Details

Basic Details

Since we know that the engine blocks between all of the series 2 and series 3 3800's are largely identical we can forget about that and focus on the internal components where a lot of the differences lie.

Camshafts and Cam Timing

Rockers

https://www.3800pro.com/threads/l67-vs-l36-connecting-rod-differences.26632/

Series 3 engines all utilized sinter forged powdered metal connecting rods, however the series 2 rods were cast metal. There is some debate as to which material is stronger though.

The L67 and L32 have stronger connecting rods than the the L36 and L26 engines.

L36/L26 rods are longer than L67/L32 rods as well

Below is an image of the L67 and L36 connecting rods:

The L67 rod is on the left and the L36 rod is on the right.

Below is an image of the L36 and L26 connecting rods.

The L26 rod is powdered metal, however it is slightly smaller than the L36 connecting rod.

Here is a side profile of the two:

The L26 rod is on the right, the L36 is on the left.

L67 and L32 pistons are longer than L36/L26 pistons.