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ls1 intake on 4.8

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Old Jun 10, 2005 | 11:36 AM
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Default ls1 intake on 4.8

will the ls1 intake fit on my truck which has the 4.8. if so what all do i need to install it. thanks
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Old Jun 10, 2005 | 11:40 AM
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it will fit but y would u want to do that.
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Old Jun 10, 2005 | 01:21 PM
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wont it help out the horsepower?
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Old Jun 10, 2005 | 01:47 PM
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actually the truck intake flows better then the ls1 intake,and you will lose some low end power.Don't need to lose any more in the 4.8.Plus i think you need to move some acessories around to get it to fit.
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Old Jun 10, 2005 | 02:27 PM
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True all whats posted above. There is no benefit. There was a post with the same quastion not to long ago about this and someone listed what all that needs to be done to fit the LS1 intake. Cant remember who tough?
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Old Jun 10, 2005 | 07:58 PM
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Originally Posted by mangledgmc03
actually the truck intake flows better then the ls1 intake,and you will lose some low end power.Don't need to lose any more in the 4.8.Plus i think you need to move some acessories around to get it to fit.
What do you mean move some accessories around to make it fit? If the 4.8 intake fits fine on the ls1 why would the ls1 intake not fit fine on the 4.8?
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Old Jun 10, 2005 | 08:40 PM
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Because The Intake Is Lower So The Tb Hits The Water Pump.i Think The Only Thing That You Would Need To Change Is The Water.but Not Sure.
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Old Jun 10, 2005 | 09:45 PM
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To do the LS1 intake the righ way you have to do the following.

(1)-Install electric fans
(2)-Buy a idler relocation bracket from Speartech
(3)-Trim some of your water pump
(4)-Get a 97/98 vette type fuel rail(retrurn style-2 lines coming off the fuel rail.
You can buy a brand new one from a dealership for like $350,buy one from
S&P for like $250, get a F-bod fuel rail and have it modified which will end
up costing you $250+, or find a used one which isnt easy but possible.
***The reason you dont want to use the truck fuel rail is becuase it will be like
8 inches higher than the LS1 intake. You can use it and make some spacers
but it doesnt look to good.

Since you have a 4.8 I wouldnt do it and some would say since you have a truck dont do it. Im almost done getting all the parts to do this but I have a LS1 but some would say dont even do it then.
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