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
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