Boats For Sale:
1990 BBC 454 Drain plugs |
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99airwarrior 
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Joined: August-19-2019 Location: Reno Nv. Status: Offline Points: 141 |
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 Topic: 1990 BBC 454 Drain plugsPosted: November-29-2023 at 2:35pm |
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I have a 1990 454 BBC that does not have a drain plug on the port side, I have a clear view of the whole block. on the star side it has the normal 1/4 inch drain plug on the port side all it has is the small oil. galley plugs 1/8 plugs evenly spaced no drain plug any where. Tried to remove the 1/8 inch drain plug along the rail with heat no luck. I do not want to drill it out if its the oil gallery because of metal shavings. I need help thank you Joe
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63 Skier
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Joined: October-06-2006 Location: Concord, NH Status: Offline Points: 4269 |
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Posted: November-29-2023 at 4:33pm |
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I'm really surprised by that. My 1986 had the normal plugs both sides, I can't remember the exact location and don't have it any more. I'm going to see if I have any pictures that show it.
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'63 American Skier - '98 Sport Nautique
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Riley
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Joined: January-19-2004 Location: Portland, ME Status: Offline Points: 7954 |
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Posted: November-29-2023 at 4:47pm |
Don't know why the image flipped. Engine is probably a 1980's.
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99airwarrior
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Joined: August-19-2019 Location: Reno Nv. Status: Offline Points: 141 |
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Posted: November-29-2023 at 4:53pm |
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63 Skier if you google it, every block has two a lot of pictures exactly where it should be. I worked in the Marine industry for many years and winterized many craft and never seen this before. The block is actually in my 1970 Chevelle. removed the header everything on the drivers side which is the left side of the block. Thank You for the response. Joe
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63 Skier
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Joined: October-06-2006 Location: Concord, NH Status: Offline Points: 4269 |
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Posted: November-29-2023 at 5:02pm |
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Seems impossible the block could be lacking it when new, any chance someone filled it with weld at some point?
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'63 American Skier - '98 Sport Nautique
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KENO
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Posted: November-29-2023 at 6:02pm |
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And here I thought I had the only 454 block with only 1 block drain.
Same as you Joe, just nothing there. Must have been a hungover Monday morning block. Since it was going into a boat, I figured a drain on that side would be kinda handy. The solution at the time was to pop the rear freeze/core/casting plug on that side and make a "custom" plug with a drain in it. It worked good, left a little water, but some antifreeze took care of that when winterizing.
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99airwarrior
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Joined: August-19-2019 Location: Reno Nv. Status: Offline Points: 141 |
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Posted: November-29-2023 at 7:03pm |
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Keno I am so thank for you. You know how many times I ask for help and the Mod would tear me up for it on other sites. I figured people would think that I was crazy. I think I have winterize hundreds of watercraft and never see a block without a drain. I had that block boiled and bored 60 over and then built the rest it was not going in a boat so I never checked the drain plugs. The Chevelle has been sitting for 8 years in my shop and I wanted to change the antifreeze. Thank You to all members. . Joe
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MrMcD
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Joined: January-28-2014 Location: Folsom, CA Status: Offline Points: 3749 |
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Posted: November-30-2023 at 1:23am |
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Wow, a Nautique forum helps a 1970 Chevelle 454 owner. For the record, I want your car! Glad you found an answer.
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99airwarrior
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Joined: August-19-2019 Location: Reno Nv. Status: Offline Points: 141 |
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Posted: November-30-2023 at 2:12am |
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I am also a Nautique owner on a Chevelle forum also. I am on 6 different sites and nothing compares to this Site, because of the people and its Mod Keno he should do classes how to treat members and make you feel welcome nation wide and this world would be a better place, for me anyway I guess I am just old Joe
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KENO
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Posted: November-30-2023 at 7:02am |
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Hey, who you callin' a Mod? That's Hollywood's pretty boring job around here.
Just one of the members of what I've heard called a "niche" little website that will just never survive things like Facebook groups etc. It's hanging in there pretty good though it seems.
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fanofccfan
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Joined: December-13-2009 Location: North Bend NE Status: Offline Points: 1781 |
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Posted: November-30-2023 at 9:23am |
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I believe it "hangs in there" because of the great knowledge that is shared by the likes of you Keno. your advice is well thought out and always spot on. Thanks for that!
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2004 196 LE Ski 1969 Marauder 19 1978 Ski
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63 Skier
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Joined: October-06-2006 Location: Concord, NH Status: Offline Points: 4269 |
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Posted: November-30-2023 at 11:31am |
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Ken gets one thing right in 19 years on the site and everyone is high fiving him. I don't get it.  |
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'63 American Skier - '98 Sport Nautique
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KENO
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Posted: November-30-2023 at 1:01pm |
One thing in 7116 days......it had to happen eventually
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TRBenj
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Posted: December-01-2023 at 11:15am |
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I’d like to know the casting number of the blocks missing drain plugs. I have noted a few differences in mark iv’s with different castings, mostly in the oil filter/port area… though I’ve not noticed any differences among blocks with the most common casting number (14015445), including the 2 drain plugs.
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KENO
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Posted: December-01-2023 at 4:06pm |
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My engine was an old Mark iv that had the old casting number system
All I remember is it started with 399. and I don't have it any more. It was a short block from a truck that came from a machine shop and they couldn't find a drain on one side either, so the price was reduced some.
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99airwarrior
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Joined: August-19-2019 Location: Reno Nv. Status: Offline Points: 141 |
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Posted: December-01-2023 at 4:52pm |
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The story with my block it was a seasoned block had it sonic align bore ect no discount for me. If you google it people say is a weak block, but I believe different and the engine is just 650 hp. 300hp nitrous bore 60 over, Top of the line parts made in USA from 20 years ago. the number is 10069286 1990 IV 454 sold over the counter but this was a seasoned block if anyone interested for more information, I do understand this is a Nautique Site. Thank You for the opportunity to share Joe
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63 Skier wrote: