I didnt run the 4 corners , was going to then not then was , but when i dropped engine in ,it has a fair slope front to back . With the highest poin tthe escape route for vapour/air didnt think the rear port would help so they are blocked.... Compared to the Ls3 heads i had on , these heads have made the oil temps rise 50f, water temps rarely exceed 195f.
Everythings the same except oil pump is standard volume /high pressure, mamo heads and intake.....
just doesnt seem those steam ports flow anywhere near enough, barely past a dribble.
Seem to get a fair bit more heat soak but unsure if its the manifold or new cold air intake, and i have ceramic coated the exhaust this time round...

 

You say oil temps are up 50 degrees on these heads but water temps seems OK? Or did you mean it is rarely less than 195 degrees F (thus meaning runs hotter too)? Odd also on the water flow out the steam holes because it is a straight shot do the block and water jacket right there. Did you try putting a wire down there maybe there was some casting stuff in the way.

 

The oil temp sits on 223f and is 20f higher thn previous (sorry temp is celsius here and stuffed up figures )and rises quickly when i give it some stick, water temps stay steady at 190f-198f
I havnt tried putting anything down the steam hole but i will take intake manifold off tonight and delve deeper

 

Ive been thinking that maybe the oil pump may be the reason why oil temps are higher.
its a melling standard volume /high pressure, min 58psi max over 80psi. It must be bypassing heaps of oil at those pressures.
Any thoughts?

 

Is the lsx block priority main oiling like darts Shp is? If so I was told by Dart to use standard pressure low volume pump. They actually have a melling part number for it.
I used the normal standard volume and pressure for mine.

 

Yes its priority mains. I called melling about the standard pressure low volume pump last year and they were umming and ahhing and i couldnt get a difinitive answer from them. In hindsight with going to a solid setup i could have given it a go.... I had the hv/hp pump before this with hydraulic set up and oil pressures were 25-60psi now is pegged at 70+....
Ill whack a bigger oil cooler on this week, that should lower psi a bit

 

what weight oil do you run?

 

my clearances are .0025 mains and .0027 rods and .0004 thrust. I have a 15 row engine oil cooler . Im using penrite 10/tenths full synthetic 10w40
At 220f 1100rpm its 55psi

 

I use the same oil but either a 0w40 or 5w50.
The viscosity you are using is from the racing range.
One of the best oils you can get.

 

You could go 30 weight with those numbers. It actually would pick up a few hp. The Penrite stuff is top shelf from what I read.

 

I was thinking that as well. Will drop oil pressure some and maybe lower temps

 

It's actually one of the best oils in the world.
I have seen a test with the penrite you guys have in the USA against the amsoil and Pennzoil.
The penrite you guys have over there is the vantage which is the lowest grade.
And yet it best them in some areas.
The oil the OP uses is called 10 tenths racing.
I use either that one or the 10 tenths premium.
Only difference is the zinc content.
1800ppm vs 2200ppm.

I actually did an oil test years ago with a 5w30 and 5w50.
Made no difference in power or torque.
I have seen in some engines that the lighter weight oil can increase HP by a few but it wasn't the same with mine.

 

Was just at dyno tuners when he ran my car up, it was 95f with 664rwhp. It still has more in it he said. Record on his dyno for NA .
The tuner operates the dyno comps at the nationals, he said i would have won the dyno comp at the nationals last month.
My goal was 700rwhp so i will throw some E85 at it and should achieve it easily with the E85 and cooler weather..
I could throw a vacuum pump and electric water pump and pick up more, will see what the E85 does

Now im a very happy camper

 

That's great news.
i would recommend the the ewp.
It will make the engine rev quicker too.
Please post some dyno sheets when you can.

 

Just going to go E85, thtll hit my 700rwhp goal. Will post dyno sheet in next few days. Was riding shot gun for the pull and didnt even think of video

 

I will swap out to 0w30 once cars back and see how it goes. Ive used the penrite for over 10yrs, was going to swap to the valvoline VR1 but was hard to source nearby...
So stuck with what i know.

 

Awesome power man

 

Maybe related, maybe not, but I found on home made jet engines that lighter oil made for a lot more RPM, which made more thrust. So yeah, if you can get away with lower viscosity oil, I'd say do it.

 

Awesome sauce! EWP likely show up as 10-15 on the dyno. But it my also enable a shorter belt routing, which will also help. Vacuum pump may be well worth it. Pistons gotta displace the same volume above and below. Depends on if your block has the windows or not.

 

This is through an automatic transmission or manual? Impressive power, nicely done