Looks like pushrod oiling is required with 750 lbs over the nose. These pushrods toasted themselves after just three dyno pulls. I do have pushrod oiling lifters but I didn't order pushrods with holes in them for some reason. Not sure why I didn't but that mistake cost me a set of pushrods. Doesn't seem to be any other damage.

Harland Sharp sent me some rocker arms with the adjuster screws rough machined on the balls. Small pieces were breaking/grinding off and my pushrods looked exactly like that with 780 lbs over the nose. They were kind enough to sell me some new properly machined adjusting screws and I had no more problems. You probably were smart enough to check the screws before assembly and that might not be your problem.

I don't think that is the problem, I looked at the adjusters and they appear to be in good shape. One possibility is that I have the adjusters backed all the way off in order to improve geometry so perhaps the oil squirt from the hole in the rocker is missing the cup? Maybe a shorter pushrod would work okay? I'm just going to order pushrods with oiling and put it back together. I know that pushrod oiling solves the problem I'm not so sure about the oil squirt theory.

pushrods are too long....putting the cup too high not enough oil running down into the cup my . Pushrod oiling will solve it though. Just not needed. When I saw the first picture I said to myself "why so much thread above the adjuster nut?" Then I saw the underside.

Could be but if the adjuster hangs out very far below the rocker arm then it kicks back and forth rather than go up and down. But perhaps people live with that rather than go with pushrod oiling. Still seems like at some point you need the pressure fed oil rather than rely on splash. 750 lbs over the nose is a lot of force to just use splash oiling.

Wow!

This is good to find out about before I order my pushrods, sorry you had to burn up a set to find this out, did you restrict the oil to the head/rocker's and if so by how much, I just made and installed .040 restrictors in my block passage but the heads are not back from the shop getting the new PAC springs installed for the roller cam and having the guides inspected and/or corrected, so the orifice can be changed quickly before I install the head's.

750 over the nose really isn't that much pressure.... I am over that (well my valve spring set up anyway ) and I am sure there is a majority on here doing it with splash.

First thing I thought also - that high up the squirt of oil misses the cup entirely. never had an issue with Harlan Sharpes oiling at close to 950lbs over the nose even with the old 1.65 they offered - but push rod oiling will fix it either way

I'll see if I can post a video of a pull:

https://youtu.be/UDuRWlNsjok

Way too go Andy, I liked the rocker arm vid!!

Looked like a touch over 700? What was the intake carb combo on that pull?

Yeah the console reads a little over 700 but the printed report says 700 exactly. That is with the Trick Flow intake and a 1050AN carb from QuckFuel. (4150 style carb)

The Dominator combo should be worth 15 to 20 more but I haven't bolted it back on yet. Still trying to figure out the best rocker system to use.

Here are the results with my 950 Dominator carb. Intake #1 is the as cast Mopar 4500 M1, intake #2 is a Wilson ported M1 4500.

Andy, are you still going to test the M1 tunnel ram?

Yep, just need to build the various brackets for the throttle linkage and stuff like that.

So the intake makes 30 more HP..wow

Yep, right at 30 hp improvement from the porting that Wilson did on the intake. This was a back to back test with everything else staying the same. All the gain is from 5500 rpm up so you wouldn't notice it on a street car but a drag car that leaves at a high rpm would notice it.

Awesome!

Don't know if you saw the results or not but my 505 picked up a tenth and 1mph using a Holly Street Dominator that was ported by Streetwize vs. A stock one. In my estimation it was 12-13HP? Sound correct? Motor is all done by ~6300 rpm.

As an interesting aside, I also tried back to back runs with K&N vs. no air cleaner at all and the car ran identical 11.41 times.

IMO, more than 30hp for a tenth, a lot more.