sbc spacer bearings

grumpyvette · Apr 13, 2010

keep in mind that when you go to order SPACER BEARINGS, they are comonly available it two distinct types

ONE type , is for fitting the early small journal 283-327 cranks in the later 350 blocks
Clevite MS1110H Performance Race Series SBC Main Bearings (283/350) GM Small Block Main Spacer Set

Clevite Spacer Bearings PT# MS1110H
http://www.summitracing.com/parts/cle-ms1110h
Brand:Clevite Engine Parts

Manufacturer's Part Number:MS1110H

Part Type:Main Bearings

Product Line:Clevite H-Series Main Bearings

Summit Racing Part Number:CLE-MS1110H

UPC:027067775306

Bearing Usage

erformance

Grooved Bearing:Yes

Groove Location:Upper

Groove Style:1/2

Bearing Material:Tri-metal, TM-77

Quantity:Sold as a set of 5.

Notes:Spacer-type bearing made to adapt an old-style 1967 and earlier small block small journal crankshaft to a newer-style 1968-2002 small block with the large main journal blocks. Will not fit 400 blocks.

THESE SPACERS ALLOW A 350 CRANK IN A 400 BLOCK

early small diam. journal crank in later two piece sbc 350 block

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a second type , is for fitting the later journal 350 and 327 cranks in the later 400 sbc blocks
Brand:COMP Cams

Manufacturer's Part Number:5620

Part Type:Main Bearing Spacer Kits

Product Line:COMP Cams Bearing Spacers

Summit Racing Part Number:CCA-5620

UPC:036584120018

Bearing Spacer Material:Steel

Main Bearings Included:No

Machine Work Required:No

Quantity:Sold as a set.

Notes

esigned to be used in conjunction with 350 bearings to install a small block Chevrolet 350 crankshaft into a 400 block.

350 crank in 400 block spacers
http://www.raceeng.com/p-7690-brg-space ... 0-blk.aspx

http://www.raceeng.com/c-151-race-engineering.aspx

http://www.speedwaymotors.com/Main-Bear ... k,533.html

http://www.kmjent.com/cart/product.php?productid=1816

http://cgi.ebay.com/ebaymotors/King-Sma ... 5005r23799

related info

http://www.mortec.com/journal.htm

http://www.mortec.com/borstrok.htm

http://www.mortec.com/cranks.htm

http://garage.grumpysperformance.com/index.php?threads/bearing-clearances.2726/#post-7077

bearing sources
http://www.northernautoparts.com/part/cb-ms909p1

http://www.roushyatesparts.com/clevite-main-bearing-set-p/cle-ms-909h-10.htm

http://catalog.mahle-aftermarket.com/na/modules/motorComponent/detail.xhtml?filterId=563740

http://www.summitracing.com/parts/cle-ms829h

http://www.gmpartsdirect.com/connec...s-bb/572-connecting-rod-bearing-kit/88961556/

https://www.kanter.com/productdetai...CategoryID=31&ProductCode=1660&Router=Gallery

http://www.flatlanderracing.com/clevmrbearings.html

http://www.rpmmachine.com/clevite-bearing-kits.shtml

http://www.kingbearings.com/advantages.html

Chevy Crankshaft Journal Sizes
Chevy V-8 Crankshaft Journal Sizes

There is a lot of misinformation on the internet about these numbers. We have taken the time to verify the data as much as possible. There still may be errors. Please lets us know if you find one.

Journal sizes are factory standard sizes. Your crankshaft journals may have been previously cut down by a machine shop. Make sure the crank you have is matched to your block. Blocks were made with specific journal sizes. Putting a small or medium journal, small-block crank into a medium or large journal, small-block block requires crank bearing spacers or special thick, aftermarket bearings

MEASSURE CAREFULLY DON,T ASSUME OR GUESS REMEMBER THE
\ 302 and 327 engines were produced in both journal sizes, and yes you can use under or over size main bearings with the spacers if your cranks had the journals polished under size, or you want a bit more clearance,obviously checking with precision meassuring tools and PLASTI-GAUGE is rather MANDATORY

http://garage.grumpysperformance.co...earances-and-journal-surface.9955/#post-38385

http://garage.grumpysperformance.com/index.php?threads/bearing-clearances.2726/#post-26440

http://garage.grumpysperformance.com/index.php?threads/precision-measuring-tools.1390/#post-3423

http://garage.grumpysperformance.co...ifying-clearances-on-bearings.1026/#post-1900

http://garage.grumpysperformance.co...uring-crank-bearing-journals.5478/#post-16429

Chevy Small Block Journal Sizes
Gen. I, Small Journal
C.I.D. Main Rod
265 2.30 2.00
283 2.30 2.00
302 2.30 2.00
327 2.30 2.00
Gen. I, Medium Journal (Includes Vortec 305,350 to 1998.)
C.I.D. Main Rod
262 2.45 2.10
267 2.45 2.10
302 2.45 2.10
305 2.45 2.10
307 2.45 2.10
327 2.45 2.10
350 2.45 2.10
Gen. I, Large Journal
C.I.D. Main Rod
400 2.65 2.10
383, Gen. I, Non-Factory

Gen. I, 400 Crank in a Gen. I, 350 Block. Crank mains cut down.
C.I.D. Main Rod
383 2.45 2.10
377, Gen. I, Non-Factory

Gen. I, 350 Crank in a Gen. I, 400 Block. Spacer or Thick mains bearings.
C.I.D. Main Rod
377 2.10
Gen. II, Medium Journal

Includes: L99 265, LT1 350, LT4 350
C.I.D. Main Rod
265 2.45 2.10
305 2.45 2.10
350 2.45 2.10
302, Gen. II, Non-Factory

Gen. II, 265 L99 Crank in a Gen. II, 350 Block.
C.I.D. Main Rod
302 2.45 2.10
Gen. III

grumpyvette · Aug 2, 2015

I just got an e-mail asking what to do if you find that the blocks oil feed passage holes don,t line up exactly right with the holes in the oil feed holes in bearings shells?

well different manufacturers have different bearings and you may want to find a different brand or part number bearing before you go modifying any component or the block,but I generally use CLEVITE (H) series bearings and I usually find and off set is minimal.
Ive rarely seen the oil feed passages off by more than 1/16" but Ive heard of them being off by 1/8" with some bearing sets, and know that with some other engines than the BBC, SBC, and PONTIAC engines I generally build they can be much further off.
since blocks are cast and the machining is done indexed off the crank center line the oil passage locations tend to be very slightly different in each block casting.
the option youll generally have is to either open up the passage in the block to match the bearing shell which is generally the route most guys will take if the off set is minimal by running a counter sink bit into the opening in the oil feed passage or by using a dremel, or die grinder tool with a burr to elongate the opening on only one side to match the bearings oil feed hole.
you generally won,t do much to the bearing shell itself other than in some limited cases opening the oil feed hole slightly if its in the lower groove in an upper main cap bearing as bearings are fairly easy to distort.

if you are forced to make minor changes Id suggest blocking the oil feed passage with a bit of paraffin wax then carefully cleaning after wards with a rifle bore brush, high pressure air and solvent, paraffin wax has the advantage of melting into a harmless liquid that will mix with oil if a small amounts left UN-intentionally in an oil passage

USE YOUR PLASTIGAUGE AND PRECISSION MEASSURING TOOLS , MEASSURE CLEARANCES AND BE SURE YOUR NOT BINDING< ANYPLACE

this cam buttons correctly installed but the retainer plate tabs have not been bent up to lock the bolt heads from rotating

http://www.hotrod.com/how-to/engine/181 ... g-install/

rotating assembly bearings

hi grumpy had a question , im rebuilding a 350 chevy. the crank readings are main bearing journal is 2.448 and rod journals read 2.098 so does this mean that I would need standard sized bearings? and also when installing new bearing from the box , do I need to clean them and if so with what ...

garage.grumpysperformance.com

http://thmotorsports.com/clevite_77/cle ... 62379.aspx

Grumpy · Jan 4, 2017

RELATED ENGINE ASSEMBLY THREADS
NEVER GUESS, DEAL IN PROVEN FACT!
Id get out the plasti-gauge and check clearances, don,t guess , know exactly what your dealing with!
if the clearance falls in spec and the bearings look decent they can be re-used, but its foolish to do so if they look overly dirty, worn or don't have the correct clearances
always accurately measure the crank main journals, and remember the crank and block bearing sizes on a 400 sbc and 350 smc are different as are the early 283-327 sbc

sbc spacer bearings

grumpyvette

Administrator

grumpyvette

Administrator

rotating assembly bearings

Grumpy

The Grumpy Grease Monkey mechanical engineer.