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... looks like the full house is a bit quicker than the skip , I’ve found this to be the case myself. Full-skip also seems to vibrate more and is not as “smooth cutting” as full house. The only advantage of using full skip is that there are less cutters to sharpen and with stock (or weakly...

Skip chain is usually reserved for stock power heads (or weakly ported ones) that have trouble pulling long bars with full house chain-easier on the engine ... I however , have no troubles pulling full house chain and in fact prefer it ... more to sharpen yes , if enough torque , more...

... one of the better running 660s on utube so it can be achieved ... ported by a gent named Jasha

The 660 needs a lot of work to bring it around to 395xp territory , dual vs quad transfers - It has a very low BMEP stock and is quite frankly a dog in stock trim ... A dual port will wake it up about .7hp and with the full pull Hotwoods port , intake mods and carb work it should tickle around...

Unless you have a very torquey saw (064 for example) the 8 pin isn’t much advantage over a 7pin ... What you gain in chain speed you lose in torque! The 8 pin also causes more wear and is more prone to throwing the chain due to the larger diameter ... I do run an 8 pin on my hotwoods 064 with a...