Pulled the engine apart and found the middle cam bearing had failed Seems the consensus is that the bearings didnt have enough press fit from the factory, spin out of alignment with the oil feed and then fail completely. These bearing are for 1997-2003 1st Design Position 1 and 5 housing bores are 2.3260'/2.3280' LS1, LS6, LQ4, LQ9, LM7, L59, LS4, LR4įor 2003-2007 and up engines, 2nd Design Positions 1 And 5 Housing Bore are 2.3460'/2. Dura-bond CH-10 Camshaft Bearing Set for 1st Gen LS1 Engine Block is manufactured with a thin lining layer which reduces microscopic deflections under load. I picked up an 08 6.0l from an express van that was condemned because of low oil pressure. 0004 in., giving the customer increased system design flexibility. The centerless ground OD, centerless bored ID results in wall variations of. For 2003-2007 and up engines, 2nd Design Positions 1 And 5 Housing. 0004 in., giving the customer increased system design flexibility. The seamless, 100% machined surface design provides the tightest tolerances in the industry. The centerless ground OD, centerless bored ID results in wall variations of.

Babbitt's superior embeddability, conformability, and anti-seizure characteristics have proven to reduce engine failures that harder bearing materials can cause. Lead based babbitt provides ideal properties for nearly all engine applications. Seamless construction makes installation easy, eliminating breakage and bearing surface interruptions. Dura-bond CH-10 Camshaft Bearing Set for 1st Gen LS Engine Block 97-03ĭura-Bond bimetal bearings are constructed of seamless steel tube with a thin layer of lead based babbitt material.

Ls1 cam bearings