[Henry Schmidt]

Originally Posted by Mr. Merk

https://www.protomotive.com/wp422/product/stage-1-911-carrera-on-the-side/?v=0b3b97fa6688

I found that DRC has a DC43x-102 cam for carb applications. What is the 109LC? I am intrigued.

The 43x 109 is a cam John made for an ITB 3.9 I built originally running 993SS cams.
The simple change to the 43x 109 gave us close to 50 HP.
The 109 denotes lobe center. CIS, Motronic and most EFI engines require an expanded lobe center to idle and transition properly. His standard 43 112 is recommended for EFI or turbo but we were looking for something special.


Edit: The X in 43X may be an errant reference. I'll have to talk to John about the designation.