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90 mm fast intake ??

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Old Nov 29, 2008 | 07:56 PM
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Default 90 mm fast intake ??
I will be changing out my fast 78mm to a 90mm fast intake. were does the hose that is coming from the passenger side valve cover to ls1 tb go after the 90mm is installed.

thanks in advance
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Old Nov 29, 2008 | 08:13 PM
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I drilled and tapped a hole in my air bridge and ran a new hose on mine. If you are running a breather on the oil fill area you can eliminate it. Otherwise you will need to do the same.
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Old Nov 29, 2008 | 08:49 PM
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Originally Posted by MIKESREDZ
I will be changing out my fast 78mm to a 90mm fast intake. were does the hose that is coming from the passenger side valve cover to ls1 tb go after the 90mm is installed.

thanks in advance
unless you're moving up from a non-ported 78 to a ported 90mm then I wouldn't waste my money
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Old Nov 29, 2008 | 09:48 PM
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Originally Posted by VIPERBLUELX
unless you're moving up from a non-ported 78 to a ported 90mm then I wouldn't waste my money
Or have your 78 ported. Still would be cheaper than a 90/90 setup and perform better, unless you do a ported 90/90.
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Old Nov 29, 2008 | 10:09 PM
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I found the upper shell for 100. and brand new tb for 150.00. I got the ls1 to ls2 harness for 25.00 so I have less than 300.00 into it.
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Old Nov 29, 2008 | 10:11 PM
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might be worth 5rwhp, let us know the results

a fully ported 75mm tb and 78mm FAST only makes 5rwhp less than a 90mm tb and ported 90/92
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Old Nov 29, 2008 | 10:42 PM
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Originally Posted by VIPERBLUELX
might be worth 5rwhp, let us know the results

a fully ported 75mm tb and 78mm FAST only makes 5rwhp less than a 90mm tb and ported 90/92
And 5 more than a non-ported 90/90!!
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