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I'm about to get the pistons in the block so I've been contemplating ring gap position. I've got two engine building books, the instructions that came with the rings and the factory service manual. They all say something different! The FSM is rather vague, stating, "Be sure that the...

If the rings rotate, why do we spend all that time getting the ring gaps positioned correctly? To help with the very first fire-up?

I'm not an expert or an experienced engineer builder but I think I can answer. Over time, the rings hone themselves to the exact profile of the cylinder and will stay in that position. They can rotate around the piston and once they are seated all the ring gaps will stay in the same spot and be...

I decided to check clearance on the valve covers with each rocker. Hughes wins! I'm gonna run stock-looking valve covers and they teeter on the Harland Sharp rockers and sit flat with Hughes. I checked the fit with no gasket. The Harlands run into the baffle. If you're dead set on using...

I see no similarities that would suggest Harland makes them for Hughes.

Comparing these rockers side by side, they are very different. The Huges ones ride directly on the shaft with an oil groove on the bottom. Oil holes on top for the roller and on the side for the pushrod. Very simple design. The Harlands have 48 rollers for the shaft and one oil hole for the...

They do? That's some street cred for HS! You're running way harder than I plan to! I'm sure either rocker arm will work great. Flip a coin? Ha Ha!!!

Very nice!!

The ordering excess parts club? Of that, I'm guilty!

So, I made the decision to buy rockers from Hughes. A couple weeks later nothing had shown up and no charge to my card. Rather than call them to see what was up I decided to be a dumbass and ordered some Harland Sharp ones. Those showed up and of course the Hughes ones showed up a couple days...

Wow, funny how upper management 'knows' what the mechanics should be doing!