I just received my '98 service manual, and the specs seem a little wacked to
me. Can anyone confirm if this is accurate? These profiles are very close,
but I would guess the 5.2 profile might have a very slight advantage. What
seems really strange is the valve sizes. I thought both engines used the same
head. Can someone enlighten me?
Wayne
Valve Size (intake - exhaust)
5.2 - 1.916 - 1.624
5.9 - 1.88 - 1.617
Valve Lift (intake - exhaust)
5.2 - .432 - .432
5.9 - .410 - .417
Duration (intake - exhaust)
5.2 - 250 - 264
5.9 - 249 - 269
Overlap
5.2 - 31
5.9 - 41
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