GM 3.8L V6 engine block aluminum paperweight

  1. Welcome to GM Inside News Forum – General discussion forum for GM

    Welcome to GM Inside News Forum - a website dedicated to all things GM.

    You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, Join GM Inside News Forum today!
     
+ Reply to Thread
Page 1 of 2 12 LastLast
Results 1 to 15 of 29

Thread: GM 3.8L V6 engine block aluminum paperweight

  1. #1
    2.5L Iron Duke aukc's Avatar
    Join Date
    May 2009
    Location
    Vancouver, BC, Canada
    Posts
    29
    Thanks
    0
    Thanked 0 Times in 0 Posts

    GM 3.8L V6 engine block aluminum paperweight

    I have recently obtained this and thought this might be the best place to post to try to get some more info, if there's a better forum for a topic like this, please let me know, thanks

    I've obtained a rather unusual item, hope the folks here can help me determine if it is anything interesting, it is an aluminum paperweight that I think is a GM 3.8L V6 engine block, please have a look at the photos I've attached and let me know what you think

















    1995 Pontiac Bonneville SSEi

  2. Remove Advertisements
    GM Inside News
    Advertisements
     

  3. #2
    Banned
    Join Date
    Sep 2005
    Location
    Dallas Texas area
    Posts
    1,846
    Thanks
    0
    Thanked 1 Time in 1 Post
    My Ride
    '13 F150, '09 G37, '10 R6

    Re: GM 3.8L V6 engine block aluminum paperweight

    I would have though the 3.8L block would be bigger than that
    It looks like a block for a six cylinder chain saw!

  4. #3
    Chevrolet VOLT F14CRAZY's Avatar
    Join Date
    May 2006
    Location
    Dimondale, MI
    Posts
    10,359
    Thanks
    51
    Thanked 144 Times in 98 Posts

    Re: GM 3.8L V6 engine block aluminum paperweight

    It has the hole for the balance shaft so it must be a 3800
    '07 Subaru Forester 2.5X 5MT. Bought new. 164k miles. '05 Dodge Durango Limited Hemi AWD. Mom bought new. 90k miles. '74 Buick LeSabre Luxus convertible. 455/7.5L, Quadrajet, dual exhaust. '89 Buick Reatta. 3800 SII L67/F40 six speed swap to be completed someday.

    '87 BMW K75. Pichler V1 fairing. '87 Kawasaki 650SX. '85 Bayliner Capri 1952. 3.0L OMC. Restored. '71 Chris Craft Coho 33'. Twin 327QA's. Basketcase but restoration in progress. '70? Amphicat 6x6 AATV. 13 hp Honda swap.

  5. #4
    2.5L Iron Duke aukc's Avatar
    Join Date
    May 2009
    Location
    Vancouver, BC, Canada
    Posts
    29
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: GM 3.8L V6 engine block aluminum paperweight

    yes, it has the holes in the block for the balance shaft, but it has 3.8L cast in the side, I don't know what to make of this
    1995 Pontiac Bonneville SSEi

  6. #5
    R2-D2 Astromech Droid Premium Member Neanderthal's Avatar
    Join Date
    Nov 2004
    Location
    East of the west.
    Posts
    24,349
    Thanks
    848
    Thanked 803 Times in 518 Posts
    My Ride
    15Soul+ Yellow; 01 PT LTD

    Re: GM 3.8L V6 engine block aluminum paperweight

    Have you considered cleaning up the bores a bit?

    15Soul+ 13Charger8A 13Soul 11 200V6 07GPGXP 07Spectra 95LHS 04Imp 03Accord 02Regal 02AccordV6 01Accord 99GolfTDi 98Concorde 97Concorde 97HXCivic5m 96Concorde 95Intrepid 94Protege5m 92SHO5m 93Protege5m 92P50Taurus 91Camry5m

    “Tyranny is defined as that which is legal for the government but illegal for the citizenry.”
    ― Thomas Jefferson



  7. #6
    2.4 Liter SIDI ECOTEC
    Join Date
    Oct 2011
    Location
    85928
    Posts
    410
    Thanks
    1
    Thanked 14 Times in 10 Posts
    My Ride
    63 LeSabre

    Re: GM 3.8L V6 engine block aluminum paperweight

    There is some nasty casting flash, must have been a friday casting.

    Yeah, it has Buick all over it. The face, the skirts, the additional holes in the valley.

    It isn't a 229, so there you go.

  8. #7
    2.5L Iron Duke aukc's Avatar
    Join Date
    May 2009
    Location
    Vancouver, BC, Canada
    Posts
    29
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: GM 3.8L V6 engine block aluminum paperweight

    the 4th image in the original post shows the initials ADL cast into the side of the block, any ideas what that's the abbreviation for?
    1995 Pontiac Bonneville SSEi

  9. #8
    6.2 Liter LS3 V8
    Join Date
    Sep 2003
    Location
    The Great White North
    Posts
    3,546
    Thanks
    366
    Thanked 242 Times in 138 Posts

    Re: GM 3.8L V6 engine block aluminum paperweight

    I don't think GM ever did a production 3.8 in aluminum. If I'm right, perhaps they explored it and got as far as casing some scale versions to look at what of the design would need to be changed if they went to aluminum. Given how compact and light the pushrod 3.8 was, there probably was a good argument for continued development like this, which would have resulted in a very light motor if the aluminum smallblocks are anything to go by. Just a WAG.

  10. #9
    3.6 Liter SIDI V6 JT87's Avatar
    Join Date
    Sep 2005
    Location
    Toronto, ON
    Posts
    1,055
    Thanks
    0
    Thanked 20 Times in 5 Posts

    Re: GM 3.8L V6 engine block aluminum paperweight

    Quote Originally Posted by Tone View Post
    I don't think GM ever did a production 3.8 in aluminum. If I'm right, perhaps they explored it and got as far as casing some scale versions to look at what of the design would need to be changed if they went to aluminum. Given how compact and light the pushrod 3.8 was, there probably was a good argument for continued development like this, which would have resulted in a very light motor if the aluminum smallblocks are anything to go by. Just a WAG.
    3.8's were compact, but they were not light. They always had iron heads and blocks.

    An all aluminum 3800 would have been interesting, if for no other reason than it being a great engine for a Fiero!
    "Perfection is achieved, not when there is nothing more to add, but when there is nothing left to take away."

  11. #10
    Chevrolet VOLT F14CRAZY's Avatar
    Join Date
    May 2006
    Location
    Dimondale, MI
    Posts
    10,359
    Thanks
    51
    Thanked 144 Times in 98 Posts

    Re: GM 3.8L V6 engine block aluminum paperweight

    Quote Originally Posted by JT87 View Post
    3.8's were compact, but they were not light. They always had iron heads and blocks.

    An all aluminum 3800 would have been interesting, if for no other reason than it being a great engine for a Fiero!
    Not really...one reason I feel the 3800 was canned before the Chevy 60 degree V6 was due to its size from having a 90 degree bank
    '07 Subaru Forester 2.5X 5MT. Bought new. 164k miles. '05 Dodge Durango Limited Hemi AWD. Mom bought new. 90k miles. '74 Buick LeSabre Luxus convertible. 455/7.5L, Quadrajet, dual exhaust. '89 Buick Reatta. 3800 SII L67/F40 six speed swap to be completed someday.

    '87 BMW K75. Pichler V1 fairing. '87 Kawasaki 650SX. '85 Bayliner Capri 1952. 3.0L OMC. Restored. '71 Chris Craft Coho 33'. Twin 327QA's. Basketcase but restoration in progress. '70? Amphicat 6x6 AATV. 13 hp Honda swap.

  12. #11
    3.6 Liter SIDI V6 JT87's Avatar
    Join Date
    Sep 2005
    Location
    Toronto, ON
    Posts
    1,055
    Thanks
    0
    Thanked 20 Times in 5 Posts

    Re: GM 3.8L V6 engine block aluminum paperweight

    Quote Originally Posted by F14CRAZY View Post
    Not really...one reason I feel the 3800 was canned before the Chevy 60 degree V6 was due to its size from having a 90 degree bank
    One issue being that the 3800 wouldn't fit into the midsize platforms. It was a 'low' engine, which fit well into cars needing a low, long hood (W-bodies, H/G bodies, F-bodies).
    "Perfection is achieved, not when there is nothing more to add, but when there is nothing left to take away."

  13. #12
    Chevrolet VOLT F14CRAZY's Avatar
    Join Date
    May 2006
    Location
    Dimondale, MI
    Posts
    10,359
    Thanks
    51
    Thanked 144 Times in 98 Posts

    Re: GM 3.8L V6 engine block aluminum paperweight

    The 3.8L was put in the A bodies early on though
    '07 Subaru Forester 2.5X 5MT. Bought new. 164k miles. '05 Dodge Durango Limited Hemi AWD. Mom bought new. 90k miles. '74 Buick LeSabre Luxus convertible. 455/7.5L, Quadrajet, dual exhaust. '89 Buick Reatta. 3800 SII L67/F40 six speed swap to be completed someday.

    '87 BMW K75. Pichler V1 fairing. '87 Kawasaki 650SX. '85 Bayliner Capri 1952. 3.0L OMC. Restored. '71 Chris Craft Coho 33'. Twin 327QA's. Basketcase but restoration in progress. '70? Amphicat 6x6 AATV. 13 hp Honda swap.

  14. #13
    6.2 Liter LS3 V8 unkillsam's Avatar
    Join Date
    Aug 2006
    Location
    Philadelphia, PA
    Posts
    3,847
    Thanks
    8
    Thanked 26 Times in 9 Posts
    My Ride
    2014 Chevrolet SS PBM

    Re: GM 3.8L V6 engine block aluminum paperweight

    Quote Originally Posted by F14CRAZY View Post
    Not really...one reason I feel the 3800 was canned before the Chevy 60 degree V6 was due to its size from having a 90 degree bank
    How so? Both were available in 2009 Model Year and unavailable in 2010 Model year with the exception of the Impala which should not count it should have been replaced in 2010.

  15. #14
    2.4 Liter SIDI ECOTEC jAustin's Avatar
    Join Date
    Jan 2007
    Location
    Wash DC area VA
    Posts
    365
    Thanks
    1
    Thanked 11 Times in 8 Posts

    Re: GM 3.8L V6 engine block aluminum paperweight

    Where did you get this? Looks like the kind of thing corporate may have had machined in-house, for demonstration purposes. They gave someone their drawings, he deleted all features too small for this scale of model (under half an inch, or something), and he told his guys to machine it. Then the big boys showed it to vendors or investors or whoever in the boardroom--it's meeting table/desk-sized. They would show it to the engineers to help them visualize what they were building.

    That's my guess...
    1985 Toyota Cressida, restored plus Supra guts: 5-speed, LSD, and wheels
    1996 Oldsmobile Ciera wagon with LG8 engine, swaybar, STB, 16x7 GM wheels
    ----
    Georgia Tech class of 2013

  16. #15
    2.4 Liter SIDI ECOTEC
    Join Date
    Oct 2011
    Location
    85928
    Posts
    410
    Thanks
    1
    Thanked 14 Times in 10 Posts
    My Ride
    63 LeSabre

    Re: GM 3.8L V6 engine block aluminum paperweight

    Quote Originally Posted by F14CRAZY View Post
    The 3.8L was put in the A bodies early on though
    Yes it was. Some Buick Century models had PFI 3.8s in the mid 80s and they ran like a scalded dog.

    The 3.3 is a shorter deck 3.8, IIRC.

  17. Remove Advertisements
    GM Inside News
    Advertisements
     

Quick Reply Quick Reply

Register Now

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
Powered by vBadvanced CMPS v4.1.2