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You didn't get dissed, Mike. You don't know if clearance will be an issue until you know the shaft is at the right place. Then you can rightfully determine whether the beehive springs need to be used. I call that being informed. There was no disrespect given, at least not from me. Yes it can...

That is incorrect, Rob. The Harland Sharp rockers need more correction than most, even on the TF heads. Throw a set of T&D 8130 rockers on a TF head, and run .700" net lift, and you won't need any correction. Outside of that scenario, it will need adjustment, just not as extreme as other...

If budget is a concern, just use the stock rockers and measure for the correct length pushrods. The rollers are a great upgrade, but they have to be set up right, which means relocating the shafts. That adds to the cost and makes the rollers less budget friendly, especially when you could make...

Yes, I am. And I'm at Carlisle every year too.

https://www.jegs.com/i/Performance-Stainless-Steel/796/1060-P/10002/-1

Just north of Hershey. I can't do an estimate/quote without knowing what I have to work with. That comes with tear down and inspection.

Sorry Mike. I think you misunderstood. I have cores in the event that some of his parts are beyond repair. He asked about an engine builder and I, as a builder, was just pointing out that I have those parts if needed during the build. I'm not trying to sell him parts.

I generally encourage leaving the engine assembled for delivery. During teardown I can determine the health of the engine and recognize any issues as currently assembled. The engine will tell a story of its life during disassembly if one knows what to look for. It also reduces the risk of lost...

I'm in PA and have some 273 cores in case additional parts are needed.

Mike, I believe you must have misunderstood me, and I don't want others to get the wrong idea. The Trick Flow heads have the rocker stands repositioned for to have geometry more suited for a roller rocker. It can't be right for every application, but it is much closer than other heads on the...

I've just been extremely busy with parts shortage backlogs. Finally clearing out some of the stuff from late last year, so once everything settles down a bit, I'll try to get a thread started. That's why I've been so scarce around these parts lately.

The radius for the shaft is not machined properly. Check out some recent Speedmaster threads to see discussions about this issue.

Only if the stands are corrected. Then I have no problem doing them.

Just an afterthought. Lay the gasket on the heads too, using dowels for alignment, and see how it looks. Between the block and the heads, the gasket should make it obvious which one is "off".

Hey, the Trick Flow people are human too, and can make mistakes, so the heads could have a problem I haven't seen. I just wanted to save you some grief exchanging out heads if that wasn't the problem. Let us know what you find.

Yes, the gasket will go on without issue. The holes are extra large. I'm not saying there couldn't be an issue with the head, but my experience was that the holes were shifted in the block. Being a TF dealer, I do quite a few builds with them, and haven't had a head with improperly located holes...

I have experienced this with Trick Flow heads before. It is likely not the head's fault. To have room to CNC the ports as large and straight as possible, Trick Flow machines the bolt holes on the small side, but plenty large enough for the fastener. The problem is that the factory bolt holes in...

Nah, I knew what you meant, Geoff. To be honest, I was expecting a fight, so I was purposely vague. My apologies. When I set up to cut the rockers, my intent was not necessarily to lengthen the fulcrum, but to have the rocker resting closer to the center of the valve stem, in the perpendicular...

I guess I really don't understand the general point.

They did address the rocker stands, and they are a lot closer to optimal. But, there is no "right" stand height for every application, so they have just made it a lot closer. More than can be said for all the other manufacturers that simply copy a factory head, which was never designed for a...

Getting rid of the single shaft doesn't fix geometry. It just allows stand adjustability, which can aid in correcting geometry, and that is provided the rocker is designed right. Figure in the machining of the heads, and the lifter bore bushings to pushrod oil, and combine that with the...

Yeah, but where is the high spot on a radius? Up, down, left, right? It has to have context.

Essentially, that's the effect.

I guess it would depend on the engine builder's definition of geometry. I know the stand position on the Indy heads is waaaaay off, so no rocker by itself will correct that. Now, move the shaft where it needs to be, and then a properly designed rocker can be made. Something that no off the shelf...

I have a build in the shop now with a set of 360-1's, lash caps and all. I'm trying to convince him to go with the rockers we have so we can eliminate all the poor geometry nonsense.

You might want to contact me before you make that decision. If you are interested in good geometry on an Indy head, it would be well worth your time. Oh, and I won't insult you, or your mother. P.S. Don't wait until the last minute. Things take more time than usual these days, as I'm sure...

Thanks Jim, but I don't have to be credited. I was just trying to make them usable and fit reasonably well. I wasn't sure if I mentioned the increased fulcrum length to you, but when Dwayne mentioned the ratio accuracy, it reminded me that I did that, and it probably had some beneficial effect...

They might be a little better than they were originally. Since I had to restore the radius on the rocker tips anyway, I cut the fulcrum length slightly longer so the rocker would center on the valve tip a little better in his application. That would have the effect of a very modest ratio...

One of these days, I'm going to have to do some YouTube videos about rocker geometry. There is some good basic info in these, but also much that is incorrect. I wonder if either of these gentleman can explain how the centered pattern improves reliability or performance, or any other benefits...

I'll let you know when I'm done with them. I might just start a new thread on what I've found and how it was addressed.