My son had to help me post these.[/img]http://c4.ac-images.myspacecdn.com/images02/3/m_aab977dcd5c14a14adfb3f11c4d7759b.jpg
http://c2.ac-images.myspacecdn.com/images02/7/m_2b6bba2c066b431ea3e968ecb4398371.jpg
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| I need input on Intake https://www.slantsix.org/forum/viewtopic.php?t=32656 |
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| Author: | Rat_Roaster [ Sat Dec 06, 2008 10:02 pm ] |
| Post subject: | I need input on Intake |
I am building a slant 6 that will see very little street use. This became a project just out of curiosity. I grew up with my dad running big block mopars and I have played around a lot with the small block. It will be a .30 over 225. The cam is a custom ground 270 duration .445 lift at 110 lobe centers. It was ground with the intention of use a m90 supercharger. But I am afraid that it will want to peak beyond 6000 rpm. I will use a 125 shot of nitrous. the block will be decked a .100 putting the piston .060 down. The head has had a lot of port work from a friend that I have seen alot of success from on other projects. The chambers have been closed to 38cc's. I am building my own intake. I have some 3d cad files that I will post. I am looking for any input from those that have raced the slant 6. I have learned from racing junior dragsters that all that I have learned over all the years does not necessarily translate to all other engines, and the slant 6 is considerably different. Ok I dont understand how to post an image. |
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| Author: | Rat_Roaster [ Sat Dec 06, 2008 10:39 pm ] |
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My son had to help me post these.[/img]http://c4.ac-images.myspacecdn.com/images02/3/m_aab977dcd5c14a14adfb3f11c4d7759b.jpg http://c2.ac-images.myspacecdn.com/images02/7/m_2b6bba2c066b431ea3e968ecb4398371.jpg
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| Author: | slantzilla [ Sat Dec 06, 2008 10:41 pm ] |
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  Can't really help with the intake, but to my little pea brain the mixture of a piston .060" down, a 38cc chamber, 125 shot of hose, and an M90 blower equal a weapon of mass destruction to your wallet. 
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| Author: | Rat_Roaster [ Sat Dec 06, 2008 10:48 pm ] |
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| Author: | Rat_Roaster [ Sat Dec 06, 2008 10:50 pm ] |
| Post subject: | |
thanks for replying. I decided not to use the m90. The nitrous was my alternative choice. |
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| Author: | emsvitil [ Sat Dec 06, 2008 10:55 pm ] |
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The runners seem a bit short, and my gut reaction is 1&6 won't get the same mixture as 2,3,4,5.......... |
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| Author: | Aggressive Ted [ Sun Dec 07, 2008 11:46 am ] |
| Post subject: | Manifold design |
Short runner lengths equate to very little end low torque. The slants long rods lend them selves to generating/building good low end torque so why not try to enhance it? for the intake and the exhaust? |
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| Author: | slantzilla [ Sun Dec 07, 2008 12:06 pm ] |
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That intake looks to me like it would work well with a blower. 
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| Author: | runvs_826 [ Sun Dec 07, 2008 12:42 pm ] |
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Well, to start with that cam would've not been that good for a supercharger. The lobe seperation would cause a lot of blow through, you would want something wider. Next, the the plenum intake doesn't hurt lower end torque, but is merely amplified at the correct rpms via length. So, actually if you wanted a 170 that would rev to the sky a shorter runner would assist that. The reason they choose that particular length was to help the engine at 4500rpm so they didn't have to shift down with the gears they were running. Otherwise they would shift coming out of the corners wasting time. The log idea that is kinda based on what your think and very similar to what I was looking at building over the winter break is based on the idea that you have 3.7L of air in resivoir and the chambers can suck air as needed. So on a dry manifold it would work very well, wet would probably just work better. I would definltey suggest going either NOS or supercharger as you really need to bulid the engine accordingly to get the results you want. The NOS should run well with that cam and "higher" compression, otherwise your going to realy need to replan your engine build. Wes |
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| Author: | emsvitil [ Mon Dec 15, 2008 2:18 am ] |
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Check this out: http://www.autospeed.com/A_109721/cms/article.html about 2/3 down, "Ford's Tuned Intake" Look at the diagram about 5/6 down. |
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