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Joined: Dec 2009
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ChatMaster - 1,000
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LOOKED IN MY books cant find the size of the freeze plug that goes on the back of the block thats hidden by bell housing on a 56-235 and what does the white paint marking mean thanks
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Joined: Feb 2008
Posts: 3,801 Likes: 1
ChatMaster - 3,000
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ChatMaster - 3,000
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LOOKED IN MY books cant find the size of the freeze plug that goes on the back of the block thats hidden by bell housing on a 56-235 and what does the white paint marking mean thanks THE GM PARTS MANUAL shows ALL freeze plugs the same size for '54 to '57 6 cylinder. Part # 3704158 and size is 2 1/8".
1951 Chevy Styleline Deluxe 2 door sedan / purchased from second owner 6-19-2000.
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
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tHE FREEZE PLUGS ON THE LEFT SIDE OF THE BLOCK ARE 1 5/8" CUP TYPE.
tHE CAM SHAFT PLUGS, FRONT AND REAR OF THE BLOCK FOR 1954 AND UP ARE 2 1/8"
....were 2 " prior to 1954.
tHE LARGER SIZE DUE TO THE HIGHER LOBES ON THE 1954 AND UP CAMS.
Gene Schneider
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Joined: Nov 2002
Posts: 7,472 Likes: 26
ChatMaster - 7,000
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ChatMaster - 7,000
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Gene, how many plugs are in the rear of the block? Is there one for the cam and another freeze plug? My parts book for 29-55 after the block listing has 37-55 left side block (cup type) (1-5/8in.) front and rear in block (2 in.) 3835121 (welch type) The cam plug is listed in group .553 37-53 all (2 in.) 838127 (type?) The 2-1/8" for 54-55 cam plug list 3704158. AS listed there are two different 2" plugs-one specified for the 37-53 cam and the other 37-55 front and rear of the block. It appears there is a 1-5/8" cup type plug at the left rear SIDE of the block and two 2" plugs one ? type and one welch for 37-53 . The 54-55 having one 2" plug and one 2-1/8" plug(cam) in the rear. If I sound confused it's because I am but I know you can enlighten me out.
Steve D
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
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To be honest I can't remember what is on the back of the block other than the cam plugs.
Gene Schneider
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Joined: Nov 2002
Posts: 7,472 Likes: 26
ChatMaster - 7,000
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ChatMaster - 7,000
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Well if I get real curious I do have an an engine I could pull the f/w housing off of. It's a PG engine but the block should be the same on the rear.
Steve D
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