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mggdoors 05-06-2019 03:41 AM

The big advantage is truly the new ls engines lt series gen 5 (newer than mine) with the direct injection and variable cam timing. Would need to upgrade fuel system and use a standalone but more torque and hp everywhere than mine. No carb option though. One of you asked about the internals on the crate engines. I actually spoke to marine power about there line of engine when ordering exhaust and they are stock crate engines with inconel exhaust. Plus all the fancy brackets and so on. Nothing special. Keep an eye out on the new l8t 6.6l coming out in the new silverados. That will be my next project build when I get hand on a couple but need to wait for them to come out and get totalled first. The heads on the new gen engines are amazing. I urge you to look at the l96 vs the l8t comparison for tq vs hp. The vvt definitley makes a nice difference with a much smaller cam needed.

mggdoors 05-06-2019 03:45 AM


Originally Posted by bck (Post 4685388)
What magic is this? I'd like to do this.

Looks like excel maybe. Should have done a hp one too. Even better would be a comparison of common engines such as 496ho, hp500, 525efi, and 525sc. That would be cool to see

mggdoors 05-06-2019 03:58 AM


Originally Posted by phragle (Post 4685387)
https://cimg6.ibsrv.net/gimg/www.off...de7f1b6768.jpg
Here is a 454..basic 525 sc clone, 8.5:1, AK alum heads, 731 cam... Without doing a lot of number crunching, it was a pretty budget friendly build

And this is why I questioned dyno accuracy when comparing my run to the 525sc that was run. The 525sc sheet I posted was well below those numbers with the same cam. But to be fair I have no clue to what heads where on it

phragle 05-06-2019 06:11 AM


Originally Posted by mggdoors (Post 4685543)

And this is why I questioned dyno accuracy when comparing my run to the 525sc that was run. The 525sc sheet I posted was well below those numbers with the same cam. But to be fair I have no clue to what heads where on it

I stated what heads...AK Racing....

Wildman_grafix 05-06-2019 10:10 AM


Originally Posted by 242LS (Post 4685385)
Here's a torque comparison of the 4 dyno sheets in this thread.....

https://cimg7.ibsrv.net/gimg/www.off...9c4e62ac2.jpeg

You can tell what mercury was aiming for, talk about a solid flat TQ curve.

mggdoors 05-06-2019 10:13 AM


Originally Posted by phragle (Post 4685549)
I stated what heads...AK Racing....

Im talking about the 525sc dyno sheet i posted. I have no clue what heads were on those engines as they were a customers of my dyno shops

Wildman_grafix 05-06-2019 10:13 AM


Originally Posted by sutphen 30 (Post 4685487)
here you go,,time to order up 2.:D have to add about 2200 for the electronics.


https://www.schwartzperformance.com/...en-5-19368622/

"Not intended for marine applications". I wonder is the exhaust valves the only thing they change when they make it "Marine" .

hogie roll 05-06-2019 11:02 AM


Originally Posted by bck (Post 4685388)
What magic is this? I'd like to do this.

Heres some NA pump gas big blocks, boats and street rods.

https://cimg4.ibsrv.net/gimg/www.off...2e31cb04d6.png

14 apache 05-06-2019 11:13 AM

That looks like connect the dots lol.

mggdoors 05-06-2019 11:19 AM


Originally Posted by Wildman_grafix (Post 4685593)
"Not intended for marine applications". I wonder is the exhaust valves the only thing they change when they make it "Marine" .

I literally asked them about this. For instance on the ls3 I asked if it was forged internals. He said no it was a gm crate that is marinized via inconel exhaust valves, which the l96 already came with anyways. I think that statement about not for marine use is more of a warranty disclaimer, just as say a zz454 or any other street crate application might say the same.


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