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#81144 08/06/2007 5:00 AM | Joined: Oct 2006 Posts: 29 Junior Member | | Junior Member Joined: Oct 2006 Posts: 29 | I was wondering if the Main Bearing caps on a chevy 250 cid inline 6 block is a match set to the block? Or can they be used on any other inline 6 chevy 250 cid block? Swap around to other blocks? With out doing a Line Bore & Hone job? | | |
#81145 08/06/2007 5:34 AM | Joined: Feb 2004 Posts: 29,821 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,821 |
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
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#81146 08/06/2007 1:56 PM | Joined: Feb 2006 Posts: 395 Shop Shark | | Shop Shark Joined: Feb 2006 Posts: 395 | | | |
#81147 08/06/2007 2:04 PM | Joined: Mar 2006 Posts: 1,703 Shop Shark | | Shop Shark Joined: Mar 2006 Posts: 1,703 | Yeppers ..swappin caps means a line bore for sure ..HEY THAT RYMES !...lol | | |
#81148 08/06/2007 3:06 PM | Joined: Sep 2003 Posts: 2,384 Shop Shark | | Shop Shark Joined: Sep 2003 Posts: 2,384 | I do know of one engine, a 400 Pontiac in a Formula Firebird a buddy of mine split the rear main cap in half while torquing the oil pump bolt. The engine was in the short block stage, bored, tanked etc & pistons/crank already in. He took a chance & replaced the rear main cap w/a used one. He had no desire to tear down & no money left for line boring. The last time I saw him a few months back, the car still ran fine & has never knocked or had any issues, has been 15 yrs & 80k miles or so. I am still amazed. | | |
#81149 08/07/2007 1:26 AM | Joined: Oct 2006 Posts: 29 Junior Member | | Junior Member Joined: Oct 2006 Posts: 29 | Thank You all for the reply. Most engines I work on the Main Bearing caps are part of the block they came off of. But I do not have much knowlage on old Inlines. Lucky for me I number each one and know exactly where they go.
I found another set and now I remember they go to the other engine block.
But if I do change them with another block.
Its clear Line Bore & Hone job. | | |
#81150 08/07/2007 2:06 AM | Joined: Jan 2007 Posts: 176 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2007 Posts: 176 | The caps cannot be swapped from engines unless they are line boared. Also the caps must remain in the SAME position they originally came from. So mark them when they come apart. The reason is there is slight variances that is where the line boaring comes in.
1970 C50 dump! saving orphans from the CRUSHER
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