Air Intake
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True Car Nut
Joined: Jan 2003
Posts: 3,734
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From: Bloomington-Normal, IL 1997 SE

get the K&N unless you want to make your own heat shield. You need a heat shield though, I ran without one for awhile and could notice the power loss once the engine warmed up. The heat shield I put in my bonnie made it all go away.
Ok, that'* just like my 94 burb. What I did on that one (sorry, no pics) is to use a hole saw on the 'frying pan' to drill 3 holes on the side facing the driver'* fender, and 2 more on the passenger side to the rear of the main intake feed (flat oval). Then I used pipe fitting bulkhead connectors to give me a flange for 2" flex hose. These 5 hoses draped down to the fenderwells. This gave me 5 square inches more surface area to feed my drop-in K&N. I also installed a Summit throttle body riser at the same time.
Kindof a cool effect. It makes the intake look like a giant spider perched in the manifold. Worked like a charm.
I did my 93 K1500 in a similar fashion, but the 98 Z71 was totally different. My battery was on the driver'* side, and I had a pony keg of an airbox (much better flow) where your battery is. I ventilated and shielded the stock box on that one.
Kindof a cool effect. It makes the intake look like a giant spider perched in the manifold. Worked like a charm.
I did my 93 K1500 in a similar fashion, but the 98 Z71 was totally different. My battery was on the driver'* side, and I had a pony keg of an airbox (much better flow) where your battery is. I ventilated and shielded the stock box on that one.
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Senior Member
Certified GM nut
Joined: Jun 2004
Posts: 1,719
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From: Grand Haven, Michigan

Where, can I get a throttle body riser, how much will it cost, and how much power will it give me. In the funture I look to put a better exhaust on, a CAI, a new intake manifold, and some more. These things didn't come with much baseline power, but the torque is there.
Try this for starters:
http://store.summitracing.com/defaul...+riser&x=0&y=0
My suggestion is to call them directly, tell them your application and specify a throttle body spacer or riser.
Be warned, getting the fuel lines to fit is a real trick. I've done two of these now, and it didn't get any easier on the second.
http://store.summitracing.com/defaul...+riser&x=0&y=0
My suggestion is to call them directly, tell them your application and specify a throttle body spacer or riser.
Performance from a name you can trust.
Throttle Body Spacer, Chevrolet/GMC, Each
These Trans-Dapt TBI riser plates raise the housing of the TBI unit, allowing 15 percent more airflow by the injectors for more horsepower. More power and a great price, what else could you ask for?
Vendor Trans-Dapt Performance Products
Product Line Trans-Dapt Performance TBI Riser Plates
Spacer Thickness (in) 1/4
Spacer Finish Black
Spacer Material Poly-phenolic
CARB EO Number (Not Specified)
Quantity Sold individually.
Notes (Not Specified)
Throttle Body Spacer, Chevrolet/GMC, Each
These Trans-Dapt TBI riser plates raise the housing of the TBI unit, allowing 15 percent more airflow by the injectors for more horsepower. More power and a great price, what else could you ask for?
Vendor Trans-Dapt Performance Products
Product Line Trans-Dapt Performance TBI Riser Plates
Spacer Thickness (in) 1/4
Spacer Finish Black
Spacer Material Poly-phenolic
CARB EO Number (Not Specified)
Quantity Sold individually.
Notes (Not Specified)
'feelable'. Somewhere around 10-20 hp, but I did both mods at the same time. It really becomes apparent when you're pulling a hill. You get into the power much quicker, and at a lower rpm.
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. I think the turbo is what makes the intake different.