I haven’t tested enough stuff on methanol to really have a feel for how it would compare to something like Q16 in a build like that.
I suspect the Q would perk it up pretty good up top, and the TQ would likely take a hit lower down.

Al might have some experience between the two fuels.

Still decent numbers, and it’s still in one piece.

I've been adding a little RTV at the top 1/4" edge or so of the headgasket between the block and head. This has solved any oil leak issues at the corner of the valley tray/china wall.
Doug

Nice numbers. So, who was the closet on the prediction? We always do a dollar a guess at work per person on h.p. & torque numbers and the closest to both numbers wins the pot.

Greg,
It may not have made the 1000 hp you wanted, but it is healthly. And with more vacuum (sealing crankcase) it will be closer. From posts over the years, my impression with these combos are one small difference can be +/- 50 hp. I am trying to compare to your 550 CID tricked out 440-1 heads.
- Same bore x stroke
- Same cam
- Same intake manifold. But Wilson ported for 572-13
- Same alky injection system
- CR: 15.1 (440-1), 14.5 (572-13)
- Headers: 2.25" (440-1), Stepped 2.125" to 2.25" (572-13)
440-1 heads ___ 572-13 heads
747.9 tq 5700 __768.8 tq 5300 (lowest rpm measured on 572-13)
926.2 hp 7200 __957.1 hp 7400 (highest rpm measured on 440-1)

Are there any changes to above?

Next dyno test take, it to 8000 RPM
Don't be surprised if it picks up 50 HP

Cab, i get nervous enough at 7600! I am not going to re dyno it, but am thinking of some changes. I am at 74.4 cc on the heads, going with a . 030 cut will being them to 69.4 and raise compression to 15.24/1.
The other change is go with back cut valves . If the high lift doesn't hurt power, as shown by flow loss/turbulance at . 800+ lift, i might see my 1000 hp at the track. At our average DA around hear, that would put me at about 8.48 et. That will have to do🙃

Made similar power to my buddy's 540 from Best Machine. 572-13 heads, 14.5-1, Indy 440-25 intake, 285/295..800+ cam ?, 2 850 Quick Fuel, on gas. I'll see if I can get the dyno sheet.
Doug

It made 9 hp from 7100 to 7600. Doubt it will pick up 50hp winding it up another 400 rpm.

Greg, it might not have been the number you are looking for, but as has been stated many times before, the dyno is just a tool, and at the end of the day you have a nice piece to install in the car, and it's going to be fast.

Greg you probably have it on this post somewhere but why didn’t you want a 30 degree back cut done. What did Larry Smith think about you not wanting it done

Comparing the heads from my notes about Greg's combo, the 572-13 should be better than his previous 2.30/1.78 440-1's . I don't have the intake runner volume for the 440-1's, but I bet it is slightly less than the ~385cc of the 572-13 heads. My impression is that the 572-13 setup helped both torque (more and lower) and horsepower (more and higher). Even if both combo's reached peak HP on the dyno, the 572-13 should hold near peak HP higher than the 440-1 heads. Now with Greg's converter stall and 3-speed trans, it may not show the improvement below 6000 rpm. But with a higher shift point (7600?) the 572-13 combo should improve ET/mph more than the 31 hp increase might imply.

Not sure what Larrys thinking was, just that he wanted no back cut. But due to other knowledgeable folks saying go with a back cut, i am probably going to do that.

I wouldn't second guess Larry, he's not the only one who thinks that way. With vacuum and Q fuel it'd be at 1000 or so which is about what I'd expect. Fix your leak and run it IMO. Then tune it at the track and it'll run the ET numbers you were expecting. Nice job BTW! Go have some fun.

YOU COULD EASILY LOOSE POWER by doing that!!! Overmilling generally hurts flow and who's to say the dome you have is helping power?! Leave it alone fix what you know is bad e.g.-lack of crankcase vacuum

I know you guys are smarter than me , the AFR for meth is out of wack on the dyno sheets, you leaned it out & lost power, it was already to lean to begin with, just asking how the wide band was set up to read the AFR. on mine I can set what fuel is used ?

Guess my 950/770 guess wasn't so far off afterall...Get the vaccum up to 15 or more and you will find a little HP. The back cut may not show much on the dyno sheet either but worth a shot if you want to try but depends on how the bowl area is done to take advantage. It certainly shows on a flow sheet but may not be a great idea.

Greg do you know what valve job was done on the head. (Angles and how many)

I assume it wasn't touched and that's on the gasoline scale.

I couldn't resist commenting, since Greg has not.
The two dyno runs he posted are with different fuels. Straight methanol, and M5
And the dyno note "8 bigger pill" was for run 8 compared to run 7 (which was not posted).

Run 8 at 14:08 (larger pill, leaner than run 7) 957hp at 7400 rpm 11.2 air/fuel (gas scale). Lambda=0.76
Run 10 at 14:31 (changed fuel to M5) 968 hp at 7400 rpm 10.7 air/fuel (gas scale). Lambda=0.73
I am using methanol Stoichiometric 6.45, M5 may have a slightly different number. I have run gas, methanol, and E85. I just prefer to display the gasoline scale on the O2 sensor so I don't have to remember different numbers for close to best power ratio (approximate) for different fuels.

And when I ran injected methanol, I found too rich was better than too lean. And I think 11.2 is on the rich side. (4.9 A/F on methanol scale)

Be VERY careful using a back cut IF you are not going to test the crap out of it. It probably will make more air flow and hurt power.

If you live and die by flow numbers you love back cuts. If you understand the limits of a flow bench and don’t live and die by flow numbers you won’t think so highly of back cuts.

Flow numbers sell heads. But complete testing makes horsepower.

I am not sure on the valve job, i assume three angle? I never thought to look!
Thanks for the comments! I have decided to wait and not change anything till i run it, or come across solid proof what i want to change will be a positive. This is what i think needs addressing at this point. Fix vacuum leaks. Remove spraybar oiling- reason; my system wasn't pushing out oil before through the vacuum system. Same system, over a full quart, maybe two in my big vacuum breather tank from ten pulls. The motor has to be making a lot of oil froth to do that.
Also this motor has a wierd dome shape that i don't like, and timing ended at 37 degrees total, and i ran 34 without that weird little dome in the 440-1 headed combo. So if i ever want to raise compression i think it best to wait till i can have that little odd ball bubble part of the dome removed.
My apologys if i missed anybodys questions.