Texas Speed LS1 Cylinder Head Upgrade - Big Power, Small Change - Part 1
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The car is lifted and the driver-side header is pushed up into position. A single bolt in the rear of the cylinder head is threaded in, holding it in place until the car can be lowered. The used factory GM manifold gasket is positioned and a single exhaust bolt is threaded into the front bolt hole. This rear bolt is then removed and the gasket is slid into position so the rear bolt can be threaded back in. The remaining four 10mm bolts are installed and snugged down, going from the center ports outward. This process is repeated on the passenger side and once both headers are snug, a torque wrench is used to put 20-25 lb-ft of torque on the bolts. The spark plugs are closely examined for signs of wear or detonation. After determining that the NGK TR-6 plugs were in "new" condition, they were checked for proper plug gap and reinstalled. View Related Article
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