Originally Posted by gcb
Here are my first NORVELs. They are Big Migs, one .049, the other .061. They have straight back mufflers, a different fine needle valve, and came with the old glow heads plus adapters and the (then new) Freedom glow heads.
"old glow heads", "adapters", "Freedom glow heads"?
OK. I presuming that this latest variation, the NV AMD 049 CL is just the latest improvement in an excellent engine thats been around for a long time. What are the differences among the several variations?