Chevrolet 216 235 (early) main bearings? The same?

[Mike K]

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[Mike K]

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[hrpearce]

Thank you Mike much appreciated.

[Alex van de Wetering]

Thanks everyone for all the replies, info and suggestions.

David; thanks for checking the manual. Interesting to see that GM 608421 is advertised by a parts supplier as being 010 oversize; if it proves to be Standard in stead, than maybe this is the solution for Maurice!

Thanks Maurice; I am after a full set of (preferebly precision) main bearings size 030.

Mike; Thanks for uploading the booklet; very interesting!

Phil; I am a regular on your website; so much interesting info...and I still have a lot to learn when it comes to the mechanical side of our beloved CMP's!

Keep us posted on your progress.

Indeed, it's about time I update my resto-log. My focus is on the engine and rear axle for this winter, as I hope to have the truck running, nex year!

Alex

[Alex van de Wetering]

David; thanks for checking the manual. Interesting to see that GM 608421 is advertised by a parts supplier as being 010 oversize; if it proves to be Standard in stead, than maybe this is the solution for Maurice!

608421 Consists of (1) 603943 Front Bearing Unit, (1) 603944 Front Inter.Bearing Unit, (1) 603946 Rear Inter. Bearing Unit, (1) 604359 Rear Bearing Unit, (2) 839125 Dowel Pin.

hmm....Even though the Canadian C8 parts list does not list the set "608421", it does list the individual bearings "603944, 603946 and 604359"....but all marked "for line reaming". The front crankshaft "for line reaming" bearing is listed as "604943"....a typo in the manual maybe?

Alex

[motto (RIP)]

Alex
I have checked the TM and can confirm that all part numbers I have transcribed are as they appear in the manual.
This may indicate that one or other of the manuals is incorrect, but which one?
Somewhere there must exist a compilation of all bearing part numbers and their applications. All we seem to have are fragments of information that do not neatly dovetail.

David

[Mike K]

I have sets of precision main bearings NASCO brand . But not 100% sure if they fit the 216 .They appear to be the correct size for a 216 . both 20 and 30 under . I found them in Uptons shed at Corowa , must be 20 sets .

I posted a query on the GMH facebook page with pics of the bearings.