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Old 02-25-2000, 08:07 PM
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Could anyone tell me what factory acceptable compression specs on a 4.5 should be? This engine may be replacing my 4.5 Euro series in my 1979 450 SLC. It has 145 +/- 3 psi in all cylinders, and was rebuilt 40,000miles ago. There should be papers showing all maintenance that was performed before the car was totaled.

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