Spring loaded to tension the accessory belt. To release the tension from the belt insert a 1/4" socket over the nut in the center of the tensioner and using a long 'breaker bar' attatched to the socket rotate anti-clockwise until the pulley lifts clear and frees the belt.
Used to fill the CAC coolant circuit. It is a common misconception that the coolant is part of the normal engine cooling but this is not the case. Coolant is circulated from the CAC out a pipe at the lower back part of the CAC, down to a radiator mounted underneath the front of the truck, through a pump which then forces the coolant back up by the Coolant Return hose (Shown) to the CAC.
Excess coolant fluid from the Charge Air Cooler (CAC) circuit is fed by a tube to the radiator expansion tank.
Fluid returning to the CAC having been chilled by the CAC radiator.
The place where 4.5 liters of fully synthetic 15W20 oil (Mobil 1 suggested.) goes after an oil change.
Controlled by the throttle pedal this arm normally has three cables attatched: Throttle pedal cable; Cruise control cable; Throttle Valve (TV) cable to control the shift points of the transmission.
This is a standard L-98 TB used on other 350ci (5.7L) port injection engines.
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The diagram shows the two oval orifices through which the air passes into the TB. The casting which seperates them is know to cause power losses on other vehicles: The incomming air is bufferted against the concave moulding resulting in a disruption to the airflow. To regain the smooth airflow an air-foil can be fixed to the center of the TB. In high RPM applications on a normally aspirated LT-1 the TB air-foil can give a power increase of about 11HP but its power gain (If any) in this forced induction engine is unproven. |
| Complete diagram available. |
Dunno what this cable is?
| The stock turbo charger has rated flow-rate of 550 cfm (cubic feet per minute). | Annotated diagram available. |
| The turbo contains a 17g compressor wheel and an 8 square-centemeter exhaust housing. The 17g indicates the size of the wheel and the arrangement of fins. The opening into the compressor wheel is 8 square-centemeters. | Annotated diagram available. |
A cumulation view is that the steep bend angle on this hose and its ribbed construction causes unnecessary restriction to the compressed air exiting the turbocharger. Replacements for the hose can be as simple and cheap as piece of radiator hose (A Ford Truck part is said to fit) or to the extent of a custom mandrel bent metal pipe. An important point to note is that this hose not only has to be capable of taking the usual boost pressures (~15psi standard, ~17psi with some aftermarket chips or ~22psi for race applications) but also the high pressures incurred when the rapid transition from 100% Wide Open Throttle (WOT) full boost to 0% throttle happens. Boost from a still spinning turbine builds up as it cannot flow normally through the Throttle Body (TB) and pressures above 40+ PSI can be reached. This excessive pressure then forces its way back through the compressor wheel producing a 'chattering' sound which eminates from the air filter. With a standard air intake system this in not noticable but using a low restrictive filter (Like a K&N) makes the sound very pronounced.