C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

X-Ram?

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Old Jun 5, 2007 | 05:10 PM
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Default X-Ram?

Is the X-Ram better then just taking my dremel to the original L83 intake manifold? If I do dremel it, where do I do it at?

Any info you have... good, bad, or anything else is appreciated. Expecially flow numbers for both

Thanks
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Old Jun 5, 2007 | 07:55 PM
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Hang on...youre going to attempt to port your intake but youre not sure where to "dremel" it at? Are you serious?

Buy an Xram if you can find one.
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Old Jun 5, 2007 | 08:39 PM
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I did mine in my garage , but you should be OK in the basement. If you are not living with a significant other, you can do it in the kitchen. Although I have no REAL proof, I don't think the X-Ram can out power my home ported stock manifold. At least not on a 350.

RACE ON!!!
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Old Jun 5, 2007 | 09:01 PM
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i bought a cracked aluminum head from a scrap yard the other day to practice porting...i did my dremeling in the bathtub..


the results were mixed.


Bret
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Old Jun 5, 2007 | 09:16 PM
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well if you wanna port your manifold ive read in a # of posts that an air grinder is much easier and faster. go to this forum and look around lots of good info on what ya wanna do including pics of what to port.

http://www.crossfire.homeip.net/cftest/default.asp
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Old Jun 6, 2007 | 01:42 AM
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The ported Crossfire intake is the way to go. The x-ram will cost you much low end with a small gain in top end power-that's the simple answer. Even if you add rockers and cam the ported stocker will work better. Use the crossfire forum noted in the previous post and search and read the threads. The tech section will show what to port. It's time consuming but very worthwhile.
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Old Jun 6, 2007 | 01:54 AM
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Crummy part is,nobody will put the extreme effort into making the CFI intake work,they just skip to a X-RAM. I did at first on the stock 350,actually only gained 10hp at most. ET didn't really change. $500 down the drain and a lesson learned. Other crummy part is,the X-RAM has proven on a few combos to run mid 12's at the track.

If the effort was appiled I believe a ported stocker can support a 383 and 12's. This is just me though.

CFI-EFI has a good example of how well a ported stocker can perform on a stock long block 350.
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Old Jun 6, 2007 | 02:40 AM
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We'll know pretty soon since I'm installing my 383 w/ported intake this weekend!
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Old Jun 6, 2007 | 02:31 PM
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Originally Posted by SurfnSun
Hang on...youre going to attempt to port your intake but youre not sure where to "dremel" it at? Are you serious?

Buy an Xram if you can find one.
I know where, but how much? anyone have pic's? I have heard that about 40% of the runners can be removed, is that right?
Originally Posted by xrcrx
We'll know pretty soon since I'm installing my 383 w/ported intake this weekend!
I can't wait till I get to that point
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Old Jun 6, 2007 | 02:52 PM
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Originally Posted by Banned for life, Post #1
Is the X-Ram better then just taking my dremel to the original L83 intake manifold? If I do dremel it, where do I do it at?
Originally Posted by Banned for life, Post #9
I know where, but how much? anyone have pic's?
Match the manifold ports to the head ports. Better yet, match both the manifold AND head ports to a gasket. Make the port runners as large in cross section as you dare. Be wary of shortening the runners as that is where the torque comes from.

RACE ON!!!
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Old Jun 6, 2007 | 02:58 PM
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Originally Posted by SHINOBI-X
Crummy part is,nobody will put the extreme effort into making the CFI intake work,they just skip to a X-RAM.
I came pretty close.



Originally Posted by SHINOBI-X
If the effort was appiled I believe a ported stocker can support a 383 and 12's. This is just me though.
Tom400CFI ran a Crossfire on a 400 cid truck engine in his Trans Am. It ran low 13's.



Originally Posted by SHINOBI-X
CFI-EFI has a good example of how well a ported stocker can perform on a stock long block 350.
The only part of my engine that isn't as the General built it, IS the intake manifold. 165,000 miles and never had a head off.

RACE ON!!!
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Old Jun 6, 2007 | 03:38 PM
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Originally Posted by SHINOBI-X
Crummy part is,nobody will put the extreme effort into making the CFI intake work,they just skip to a X-RAM. I did at first on the stock 350,actually only gained 10hp at most. ET didn't really change. $500 down the drain and a lesson learned. Other crummy part is,the X-RAM has proven on a few combos to run mid 12's at the track.

If the effort was appiled I believe a ported stocker can support a 383 and 12's. This is just me though.

CFI-EFI has a good example of how well a ported stocker can perform on a stock long block 350.

Wouldn't the Xram with some larger throttle bodies be the way to?
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Old Jun 6, 2007 | 04:22 PM
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Originally Posted by SurfnSun
Wouldn't the Xram with some larger throttle bodies be the way to?
my understanding is on a stock 350 larger throttle bodies dont do much good at all. bigger throttle bodies are generally used on bigger hp motors. and the x-ram does do pretty well with bigger cid engines and a ported stocker does rather well there too.
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Old Jun 6, 2007 | 06:19 PM
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AFTER I installed and documented the performance of my home ported stock intake manifold, installed TBs bored to 2". I documented that there was no further performance gain from the bored TBs.

RACE ON!!!
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Old Jun 6, 2007 | 11:34 PM
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Anyone got some pic's of theirs?
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