Old 10-22-2023, 05:56 PM
mgarblik mgarblik is offline
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I think you are fine with that. I would run it.

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Old 10-23-2023, 11:37 AM
chiefbigb chiefbigb is offline
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I talked with the machine shop I use. They said full groove main bearings are not a requirement when using straight shot oiling.

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Old 10-23-2023, 02:20 PM
mgarblik mgarblik is offline
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We use 1/2 and 3/4 groove main bearings in Crower and Moldex billet cranks which have straight shot oiling. I like the extra support for the crankshaft in the cap area.

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Old 10-23-2023, 05:46 PM
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Gary H Gary H is offline
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Try some Sealed Power main bearings. They normally measure quite a bit small than the Clevite's, thickness wise. They are 3/4 groove too. They may get you the extra clearance you're looking for.

62' Lemans, Nostalgia Super Stock, 541 CI, IA2 block, billet 4.5" crank, Ross, Wide port Edelbrocks, Gustram intake, 2 4150 style BLP carbs, 2.10 Turbo 400, 9" w/4:30 gears, 8.76 @153, 3100lbs
Old 10-23-2023, 06:01 PM
tekuhn tekuhn is offline
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Thanks everyone for the responses. I have one more bearing set on the way and I’ll decide after that what to do. Be watching for bearings on the Parts for sale page ��.

Hoping to finish a project while I'm still able to push the clutch in....

1963 Tempest Convertible (195-1bbl, 3-speed transaxle. 428 RAIV, 5-speed, IRS planned) Pictures
Old 11-08-2023, 01:28 PM
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cgeise cgeise is offline
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Have the block main line honed to max spec. try diff brands of bearings, they all seem different

Old 11-22-2023, 09:31 AM
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Tim Corcoran Tim Corcoran is offline
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Join Date: Jan 2000
Location: Willow Spring, North Carolina
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Originally Posted by tekuhn View Post
I installed the King MB5511XPSTDX and measured .0030" to .0035" clearance. Apparently they are sized slightly looser than the Clevite. I know the "rule" is .001" per inch of diameter, so I'm now on the loose side of acceptable. The crank is on the small side of acceptable at 2.9990. I could get a set of STD and close that up to about .0025" to .003". Suggestions?
Your clearance of .003 to .0035 is ideal you can't go wrong with those clearances.

Tim Corcoran

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