A Seventeen Year Old
Install’s a TPI Injection
into a 1971 Chevy Pick-up
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The S&P harness comes with all connectors labeled. When hooking up the injector plugs note that the driver side wires are blue and red and the passenger side wires are red and green.  The EGR wire is tied out of the way because this truck is a pre 1974 and is not required.  S&P stocks an EGR block off for IROC/TA and Vette units (shown below) that will be used on this manifold. The tunedport will have a 14.7 to 1 fuel mixture and will operate cleaner than the carburetor ever would and this will also extend the life of the engine and increase fuel mileage.
Installing the tube bolts, again be sure to use anti-seize on all the bolt threads and torque to 5 lbs per inch. NOTE, placing the distributor in place before we install the runners makes it much easier at this point. 85 to 91 Corvette's and 85 and 86 Camaro/TA used the large HEI distributor with a coil on top and the 87 to 92 Camaro/TA used small distributor with a remote coil.85-86 IROC/TA cast iron headed Vette engines had a non roller cam distributor gear. All 87  and later had a roller cam gear distributor. If you are using a roller cam, use GM distributor gear #10456413.  Also  when installing the tubes note that the passenger side upper flange slopes down to the front and the drivers side flange is level.
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Visit the Street & Performance web site to view our online catalog for more TPI products.
www.hotrodlane.cc
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Cobry Campbell cleans the 1971 GMC Serria pick up which his grandfather purchased new. Cobry plans to install the fuel injection system and drive this truck to school everyday and next summer do a frame up on the truck.
To avoid the problems that come with carburetor engines, Cobry wanted to have the reliability, drivability and performance of a fuel injection system for what will be his everyday driver.
The first assignment was to remove the old fuel system and valve covers.
Once the old system has been removed, Cobry takes the time to properly clean the intake surface and end rails to insure a good seal when installing the new fuel injection system.
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As Cobry applies a bead of silicone to the end rails, Jason test fits the passenger side header before coating. Note in this photo that the old fuel pump has been removed and a cover plate installed. To supply the needed fuel pressure, we will be installing an in tank fuel pump. Note: you must use a silicone that is oxygen sensor friendly.
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Before setting the manifold in place is the best time to install the oil pressure tree from S&P which will allow the three prong oil pressure switch that is the back up for the fuel pump and a sender for your stock or after market gauges. This system monitors the oil pressure and controls the fuel pump. When the oil pressure is above 8 lbs it will apply power to the fuel pump. The computer will also turn the fuel pump on for 2 to 3 seconds to load the fuel rail when you first turn on the key.
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Place the new intake gaskets on the cylinder head. The intake gaskets are supplied with the GM TPI gasket set
provided by S&P. Note that aluminum heads require a different intake gasket than cast iron heads.
Set the manifold in place and install the bolts using Teflon pipe sealant GM part #12346004. This sealant is compatible with oil, water and refrigerant. Ideal for sensor installation (except 02 sensors)
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Torque the manifold bolts to 18 ft lbs in the sequence shown.
After placing the harness on top of the manifold, we installed the fuel rails by putting a lubricant on the injector O-ring and placing the rail with all eight injectors on at once. When the rails are pushed into place and the injectors are seated into the manifold, use anti-seize on the four top mounting bolts.
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S&P also offers this intake that will allow the installation of a TPI
system onto newer style vortec or fast burn heads.
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Install the air temp sensor into the bottom of the plenum and plug the harness into the sensor. The upper tube gaskets have already been installed and the plastic pins on the gaskets will hold them in place while you position the plenum and insert the bolts.
Since this truck came with the fuel lines on the passenger side, we are using a Vette fuel rail which connects on the passenger side front to make the fuel line connections  easier. Camaro/TA fuel lines come out on the drivers side front. S&P can modify your fuel rails to come out the passenger side rear if desired or they have a kit where you can modify your own fuel rails.