Diesel and Late Model 307 Lifters
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Diesel and Late Model 307 Lifters
Did all of the Oldsmobile Diesel motors have 0.921" diameter tappets? I thought that some had 0.842" diameter tappets. If some were for 0.842" diameter tappets, are the tappets hydraulic roller too?
Are all of the 307 Hydraulic Roller Tappet motors 0.921" diameter too? Did any of the Oldsmobile Hydraulic Roller Tappet motors have 0.842" diameter tappets?
Are all of the 307 Hydraulic Roller Tappet motors 0.921" diameter too? Did any of the Oldsmobile Hydraulic Roller Tappet motors have 0.842" diameter tappets?
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Joined: Dec 2006
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From: Melville, Saskatchewan
Sorry, early 350 diesels did have .842". They were flat tappet correct? If so that changes nothing, any new .842" aftermarket lifters cost $$$.
Last edited by olds 307 and 403; Sep 13, 2025 at 12:24 PM.
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I think all 350D blocks had 0.842" diameter lifters. Most DX blocks had 0.921" diameter lifters, but there are actually DX blocks that had 0.842" lifters. I have one in my possession and a friend just got one as well.
jerry
jerry
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