bearing spacers

grumpyvette

grumpyvette

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http://www.daymotorsports.com/product/1 ... NG-SPACERS
KING BEARING SPACERS
Part Number Description Price Qty Add
EB-MB5224AM Chevy 350 to 400 Spacer $49.99


http://www.jegs.com/i/Comp+Cams/249/5620/10002/-1

KING # MB5224
MAIN BEARING SPACERS
these are made so that you can use a
350 Crank in your 400 Block
add the correct size 350 main bearings
to complete the installation.
will work with any brand bearings


http://www.speedwaymotors.com/MAIN-BEAR ... K,533.html

400 sbc block/350 crank main bearing spacers

theres also TRW MS3110P is the part number for a main bearing set to put a standard pre 1968 small journal (283, 265, sj327) crank into a medium journal (350) block

http://www.streetperformance.com/part/c ... -5620.html

CHEVY SMALLBLOCK V-8 Crankshaft Journal Sizes

Gen.I, "Small Journal"
265...Mains-2.30"-Rods-2.00"
283...Mains-2.30"-Rods-2.00"
302...Mains-2.30"-Rods-2.00"
327...Mains-2.30"-Rods-2.00"

Gen.I, "Medium Journal", includes "Vortec" 305 and 350 thru '98
262...Mains-2.45"-Rods-2.10"
267...Mains-2.45"-Rods-2.10"
302...Mains-2.45"-Rods-2.10"
305...Mains-2.45"-Rods-2.10"
307...Mains-2.45"-Rods-2.10"
327...Mains-2.45"-Rods-2.10"
350...Mains-2.45"-Rods-2.10"

Gen.I, "Large Journal"
400...Mains-2.65"-rods-2.10"

Non-production Gen.I combination, using Gen.I 400 crank in Gen.I 350 block
383...400 crank, Mains cut to 2.45"-Rods-2.10"

Non-production Gen.I combination, using Gen.I 350 crank in Gen.I 400 block
377..."Spacer" or "thick" main bearings with 350 crank-Rods-2.10"

Gen.II, "Medium Journal", includes "L-99" 265, "LT-1" 350, "LT-4" 350
265...Mains-2.45"-rods-2.10"
305...Mains-2.45"-Rods-2.10"
350...Mains-2.45"-Rods-2.10"

Non-production Gen.II combination, using Gen.II 265 "L-99" crank in Gen.II 350 block
302...Mains-2.45"-Rods-2.10"

Gen.III, includes '97-2005 "LS-1" Corvette, Firebird, Camaro
345...Mains-2.558"-Rods-2.10"

Corvette "ZR-1", DOHC, "LT-5"
350...Mains-2.76"-Rods-2.10"

KING, COMP CAMS, CLEVITE, and a couple more sources are available,for those spacers and yes several appear to be re-cut bearing shells, but considering the requirements and space limitations I can,t see where they could be built a great deal differently
 
IVE re-used the same set of spacers for several engine rebuild with no problems for a friends 377 SBC
naturally youll need new bearings and BTW never GLUE them or put anything UNDER the spacers, or between the spacers and bearings as clearances, bearing crush,and heat transfer are critical
 
Thanks!
This engine is modeled after one you profiled on HybridZ, "the "350" chevrolet should have built".

I will be using a forged 327 crank, 6" H-beam rods, SRP forged flattops, and an aluminum flywheel.
The heads are aluminum, angle plug, big valve, No name on them
Cam is a "Howards" mechanical roller, "286 advertised, 242@ .050, LSA 110". A matching "Howard's" spring and retainer kit is also on the build sheet. Cam will be driven with a gear drive.
I have 1.6 and 1.5 ratio roller rockers, not sure which I will use. I also have a set of rocker stud journals that will be installed to stabilize the valve train at high RPM.
Breathing will be handled with a Wiend 7546 manifold and 750 Holley.
I hope this setup is not to far out of whack. We'll see.

Thanks Grumpy!
 
ID suggest you try the 1.6:1 ratio rockers on the intakes and 1.5:1 on the exhaust, in many cases thats what works best
 
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