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Just dropped a fresh built 383 in my 76, got everything lined up, filled with antifreeze and was a few days from fire up when I noticed fluid on the floor. Freeze plug by starter is leaking. Now I dropped 1k at the machine shop to have the block redone including new Freeze plugs, pressure test, bore, and mag. I really don't want to yank this engine again but I have never replced a freeze plug. Is it difficult to get the old plug out and what is the best way to do this? I seem to have enough working room, any advice would be appreciated.
Thanks for the video, plug came out just as shown. I ordered a new brass plug and have plenty room to tap in with sealant. Second time this machine shop has given me back a leaky block so it is safe to assume we are about done.
No they are not hard to get out. Small hole. Pry out or thread in a dent puller and pull.
Tap in a new one carefully making certain it goes in square. Perhaps a little sealer like Threebond 1104 just for insurance.
Here's a quick segment on tapping and prying them out from Jim's Automotive Machine Shop Inc. - a father / son business. Jump to 46:40 to see Jim removing the plugs.
Thanks for the video, plug came out just as shown. I ordered a new brass plug and have plenty room to tap in with sealant. Second time this machine shop has given me back a leaky block so it is safe to assume we are about done.
Thanks for the video, plug came out just as shown. I ordered a new brass plug and have plenty room to tap in with sealant. Second time this machine shop has given me back a leaky block so it is safe to assume we are about done.
Suggest you hedge your bets; also Dose your cooling system with GM Cooling System Seal Tabs.
available at local GM dealer parts counter; VERY old, reliable "bromide"
Freeze plug leaking....
