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Project Shadow - Exhaust
Waiting to Exhale with Exhaust from Edelbrock and Next Generation
August 29, 2007
Okay, back to the header install. We began on the driver’s side, and found just enough clearance to slip the header in from the top. It’s wise to get the header gasket in place prior to positioning the header itself. Once you get a couple fasteners started, don’t tighten any of them until you get a couple turns on all of them. Then, tighten all the header bolts at once. Note how the header has heat shields integrated into its design; this protects the brake booster from header heat.
Okay, back to the header install. We began on the driver’s side, and found just enough cle
The passenger side header wanted to go in from the top, but we needed access to the EGR fitting on the rear of the header. This connection needs to get hooked up prior to the flange bolts, since it’d be almost impossible to do afterwards. Once installed, the header fits right and clears everything.
The passenger side header wanted to go in from the top, but we needed access to the EGR fi
Edelbrock has engineered their headers to accept all of the factory emissions equipment. Once we had both headers securely bolted to the block and the plug wires back in place, we went ahead and got all the smog stuff hooked up. Access for all of the emissions equipment (except for the previously-mentioned fitting on the rear of the passenger side) is on top of the engine.
Edelbrock has engineered their headers to accept all of the factory emissions equipment. O
The last point to make about the header installation is a tricky issue we can help with. The dipstick is a deceptively-simple unit many enthusiasts have found frustrating in LT1-powered rides. Sure, it should simply slide back into place, but it often doesn’t. The interference fit means the dipstick hole is just about the same diameter as the dipstick tube, which makes installation hard. We found that rounding off the tip of the dipstick tube slightly made installation much easier. Once the tube gets started, a few gentle taps on the butt end of a small screwdriver inserted into the tube will get it in place with minimal hassle.
The last point to make about the header installation is a tricky issue we can help with. T
Okay, onward to the Random Technology Y-pipe. This unit is designed to fit in the stock location and only requires minor mods to fit the Edelbrock headers. We started with the driver’s side adapter pipe, which directs exhaust flow in front of the oil pan and over to the right side of the car. This pipe required no mods and bolted up easily. Remember not to completely tighten the bolts until installation is complete.
Okay, onward to the Random Technology Y-pipe. This unit is designed to fit in the stock lo
We knew we’d have to fabricate a small adapter pipe to mate the passenger-side header to the Y-pipe, so we cut the end of the Y-pipe off so we could better determine where to trim. We decided to cut back into the first bend of the pipe so we could better transition the header to the Y-pipe. The more room we had to work with, the more gentle we could make the transition. The results are great and any competent exhaust shop should be able to duplicate what we’ve done. Edelbrock includes the proper collector fitting with their headers.
We knew we’d have to fabricate a small adapter pipe to mate the passenger-side header to t
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