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  1. Remanufactured 3800 NA heads for sale

    For Sale
    I have a set of Remanufactured 3800 heads for sale. They came on a reman engine that I purchased but I had custom heads that I wanted to use. Therefore I dont need these. $400 OBO. Plus shipping. Text 757-359-6407
  2. Swap 06 Lacrosse motor n trans for 06 Pontiac Grand Prix GT motor

    Newbie Zone
    I want to swap my na series 3 3800 motor n trans for a Grand Prix GT SC series 3 3800 motor n trans is it possible and what all will I need to make it happen?
  3. Looking for a set of L32 connecting rods

    Let me know if anyone’s got a set of connecting rods for the L32 I’m building my L36 to handle boost and am trying to save as much money as possible. Will pay a reasonable price. I can get a set of new ones for 325$ but was thinking someone on here might be trying to get rid of some.
  4. Pulling 3800 series one

    FWD 3800 Engine Swaps
    So got a 1994 with original 3800 L27 engine, was rebuilding it from the block up then just said ef it might as well do it all so I’m pulling it all out. Now as far as taking the front apart I know all that, just not sure what would be easiest route to go for me, it’s mainly going to be just me...
  5. Misfiring Issue In My V6 3800

    DTC's, Problems & Troubleshooting
    First off I want to apologize if I have posted this in the wrong place as I'm new to the forums here, if it needs moved to a more appropriate place feel free to move it. Second, both "I'm sorry" and "thank you" for reading this entire post as it's a bit long and complicating! I am still a novice...
  6. First Project Car

    General Tech
    I have purchased a 1995 Buick Park Avenue as my first project car and got a sweet deal, I paid $500 for the car, there is no rust on the car 100% rust free with flawless leather interior, carpet is a little dirty, been sitting in the shade behind a garage for 3 years, the only things this car...
  7. Misfire 93 Regal Series I

    DTC's, Problems & Troubleshooting
    I have a misfire in my 1993 Regal Series I. The misfire is noticeable at start up but gets worse as the engine warms to operating temp or when the a/c is turned on. It has been this way since I got it. What I've done: -I have checked the coils both cold and warm and they are all within range...
  8. Surging at 35-40mph?

    DTC's, Problems & Troubleshooting
    Like the title says, my car is surging between 35-40mph ONLY, and I have no idea why. I did a few things before this started happening and I don't know which could have caused it (if any). Basically, I redid all but the head gaskets, cleaned out the throttle body, ran some Seafoam spray through...
  9. 3800 series low oil pressure. need help fast

    Naturally Aspirated
    I replaced the lim and uim gaskets and valve cover gaskets on my 04 Monte Carlo with the 3800, ran good lastnight. Today low oil pressure light came on when the car warmed up. Any ideas of anything I could have messed up or broke?
  10. help please?

    FWD 3800 Engine Swaps
    need help with 3800 series 2 swap from 99 olds delta 88 to 2001 monte carlo ss hello i recently bought a 2001 monte carlo ss for $900 in hopes of replacing the old motor, i bought a motor from a 1999 oldsmobile delta 88 that also had a 3800 series II engine, heres my problem, ive checked around...
  11. Any 3800 Series I (L27) parts

    Looking for any parts, hard to find want something different so trying to build this up. Let me know.
  12. 3800 NA To Supercharged?

    Naturally Aspirated
    I have a 96 Buick Regal (Olympic Edition) & I'm looking to install the supercharger from the L67 engine. Is it possible to directly bolt the supercharger on my NA 3800 Series II engine or is there more to the build than I'm thinking? Will my transmission handle the extra power? Need info so I...
  13. Need some advice on cracked heads

    General Tech
    Hi all, I'm a bit lost and need some advice. My car is a 2002 Park Avenue (base NA model) that I inherited from my grandfather. At first I didn't think I wanted to drive it, but it's a great car. It also has sentimental value. It now has about 120k miles on it and has had the upper intake...
  14. Not sure how to do this but... I have a used 3800 series engine for sale.

    Newbie Zone
    Not sure what is wrong with it. I hired someone from craigslist to fix the piston and it came back still messed up. I put a brand new piston in it with new rings. And I also got new barrings for it. However, It was smoking afterwards. Then he put another block on it and water mixed in with...
  15. Rebuilding Oil Pump

    Bottom End
    So a friend of mine wants to sell her 91 Park Avenue. Catch is the guy that came over to buy it told her that she needs to get a new oil pump. I checked it for her and sure enough there is no oil getting to the valves. I called the local parts store and they have a rebuild kit for about 40...
  16. Aurora 4.0 swap to 3800 series 2?

    FWD 3800 Engine Swaps
    I have a 1998 olds aurora with bad motor. I also have a 1997 olds 88 with a 3800 series 2 that is wrecked, but motor and trans only has 55,000 miles on it. Is it possible to make this swap and if so how difficult?
  17. Upgrading my 3800 Series II Supercharged

    I have a Supercharged Monte Carlo and haven't done anything to it yet (except a Hypertech canned tune). My thoughts were that I could do a 3" stainless steel downpipe, a 3.25 inch pulley, a short stack intercooler with the stage 3 heat exchanger and 180* stat. Do you think I am going to have KR...
  18. Fiero 3800 Supercharged Engine Harness

    For Sale
    3800 SC Supercharged Fiero engine harness for sale Complete plug and play. Fits 85-88 3800 Series II. PCM fits in the stock Fiero ECM location (slight modifications needed) Wired for a 1998-2002 PCM. PCM not included. 4 or 5 Speed Manual Transmission Includes connections for All...
  19. 97 Bonneville Engine swap

    FWD 3800 Engine Swaps
    I have just completed the engine swap, putting a 3800SC from what I believe is a 99 Grand Prix GTP into my 97 Bonneville SSE which was normally aspirated. Pretty straight swap from the bolt up perspective. Swapping the flywheel was the only change I made to get it bolted up. The electronics...
  20. 2004 grand prix gt engine build ADVICE PLEASEEEE

    Naturally Aspirated
    I have an 04 grand prix gt, love the car. I currently only have lowering springs and a KandN intake system. I know I need a new pcm but what should I get done along with it? Id love for someone with some experience modding a natually aspirated 3800 series 3 motor to help out a bit. When i...