Engine porn

Slippery P

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Slippery, do you use spread bore blocks on your 600+ big blocks?
If you are referring to the 5” bore space Big Block no we do not.
 

green787

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You mean like this one Green?
Yes we use a flow bench, and the intake manifold surface is not polished. They are finished with 60-80 grit depending on application.
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Nice flow machine..... I saw that you left the surfaces rough.... I knew you would catch on if I just persisted.... :)
 
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Slippery P

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Any guesses what this cute little guy went in?
400hp
That’s a snap on pocket screw driver next to it for size comparison. Custom rod and piston
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scottm

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Nice rod! I bet you hear that a lot.. But something diesel.
 

Slippery P

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This is the cylinder head for the engine the above piston and rod went in. As you can see the short turn on the intake runners was non existent, it was just a square edge. I managed a 48 CFM gain on the intake and the exhaust flowed 89% of what the intake did when I was done. The feet per second was pretty damn good when the head was finished. Fun little project.
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michael.gonzalez

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This is the cylinder head for the engine the above piston and rod went in. As you can see the short turn on the intake runners was non existent, it was just a square edge. I managed a 48 CFM gain on the intake and the exhaust flowed 89% of what the intake did when I was done. The feet per second was pretty damn good when the head was finished. Fun little project.
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Very nice!!
 

btshannon

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This is the cylinder head for the engine the above piston and rod went in. As you can see the short turn on the intake runners was non existent, it was just a square edge. I managed a 48 CFM gain on the intake and the exhaust flowed 89% of what the intake did when I was done. The feet per second was pretty damn good when the head was finished. Fun little project.
View attachment 233260View attachment 233261View attachment 233262View attachment 233263View attachment 233264View attachment 233265View attachment 233266
Torque Monster!!
 

scottm

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You flow test at 25 inches?
 

Slippery P

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You flow test at 25 inches?
That is how most machines I have used are set up. We enter the data into a spread sheet that does the math and converts to 28” and graphs the flow numbers against valve lift.
 

Slippery P

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Nice rod! I bet you hear that a lot.. But something diesel.
So this engine was a 1.4L D.I. EcoTec we did for a SCCA micro car. We were able to get 430hp out of it at 30lbs of boost. The engine was de-tuned to 380-400hp. Pretty impressive really. Full custom dry sump system, custom intake, used Porsche variable vane turbo.
 

Slippery P

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Some super sexy CNC ports, Billet Ford Losito head (badass head for all you Ford guys) and All Pro LS head with West Coast port program.

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Slippery P

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Back to the Mighty 1.4L when there is nothing available for the engine you have to make parts. First pic is the upper water jacket cylinder wall support we made that was press fit into the top of the water jacket. The block was then honed to size with a torque plate to straighten up the cylinders from any distortion from pressing in the support. LS ARP head studs. The others are of the pulley made to drive the dry sump pump, which adapted to the stock damper. Recycled I.D. Designs TT parts.
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Slippery P

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I have 'some' knowledge here as well, though not nearly as much as green. Here is the stock 7.4L manifold on my heads just last week, verses a EFI Victor Jr. It's safe to say the victor flowed better, though I'm trying to see how well I can make it run and stay emissions legal.
I flowed the head and manifold combination, set up on the flow bench like you have jigged up there, for Josh’s TTTT. Did you block off all the other intake runners?
 

scottm

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There is an injector in the runner being tested, but the other runners and various holes were not plugged. With the victor, I could feel air drawing in all over the place. But I was also surprised that it reduced flow through the head as much as it did, from 295 cfm bare to 267 with the victor on. Is that typical? I thought the victor might actually increase combined flow. Of course it's irrelevant, since an engine needs a manifold, and the victor was 40 cfm better than the stock one. Stock mani combined flow was only 220 cfm, and that's after a ton of work deburring, port matching, and line of sight blending. In fact I had to build up the outside with weld in places as I kept grinding through. I think the new 454 with the head and mani work, plus bigger injectors, cam, a 0411 corvette ecm and headers will make 400+ at the crank and hopefully 350 at the wheels, and pass az emissions. Do you have a chassis dyno too?
 
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