Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

engine differences???

Discussion in 'The Garage' started by yunit, Aug 16, 2003.

  1. yunit

    yunit 1/2 ton status

    Joined:
    Feb 24, 2000
    Posts:
    3,068
    Likes Received:
    0
    Location:
    Oakland, NJ
    What is the difference between the 87-95 EFI engines and the 86 & older engines? I am looking at getting a new engine for the 92' and a brand new GMGoodwrench is less than $1300, but it says it is only for the 86 & older vehicles.
     
  2. DesertDueler

    DesertDueler 1/2 ton status

    Joined:
    May 23, 2001
    Posts:
    3,106
    Likes Received:
    0
    Location:
    Phoenix, AZ
    86 and older are 2 pice rear main seals, 87-95 are 1 piece. 86 and older use the old style heads for carb, 87-95 use centerbolt valve cover style heads for TBI.
     
  3. sled_dog

    sled_dog 1 ton status

    Joined:
    Sep 3, 2002
    Posts:
    16,870
    Likes Received:
    0
    Location:
    Austin, TX
    do they make TBI intake for older style heads? Centerbolt TBI heads flow like total crap, a 2 piece motor might be better if you can get a good TBI intake or feel like modifying a carb one.
     
  4. DesertDueler

    DesertDueler 1/2 ton status

    Joined:
    May 23, 2001
    Posts:
    3,106
    Likes Received:
    0
    Location:
    Phoenix, AZ
    You can modify the 4 center intake holes to work on the carb heads.

    Dan
     
  5. SUBFAN

    SUBFAN 1/2 ton status

    Joined:
    Mar 23, 2003
    Posts:
    2,334
    Likes Received:
    0
    Location:
    Davenport, Ia
    There is also an adapter to use TBI on a carb intake....
     
  6. bablazer73

    bablazer73 1/2 ton status

    Joined:
    Apr 4, 2000
    Posts:
    3,363
    Likes Received:
    0
    Location:
    upstate ny
    the 2 piece rear main, the flexplate are different. (The pilot part of crank is different.) the early block has a fuel pump hole, but you can block it. I think the dipsticks are different. may interfere with exaust manifolds. older blocks don't have bosses in lifter valley for roller lifters. The newer heads can be bolted onto a older block. so you can use your intake and stuff. and you can put your knock sensor in the plug on the side of the block for the coolant. I know the drive pully depth is all different from 87 up, but I don't know about balancer. did you check on maybe a short block? are your heads cracked?
     
  7. yunit

    yunit 1/2 ton status

    Joined:
    Feb 24, 2000
    Posts:
    3,068
    Likes Received:
    0
    Location:
    Oakland, NJ
    If I keep the 92', the engine is going to have to be rebuilt or replaced, it is just really tired, the oil pressure is always at like 15lbs and the truck is doggy pulling a trailer with two quads on it.
     
  8. bablazer73

    bablazer73 1/2 ton status

    Joined:
    Apr 4, 2000
    Posts:
    3,363
    Likes Received:
    0
    Location:
    upstate ny
    I don't know if you are interested, But i'll be pulling the engine out of the 87. same block. If you want that to start a rebuild, you can have it. It runs decent. uses 1 qt every 3,000. smokes when it starts. It's supposed to be a GM goodwrench engine with 30,000 or so on it. Has good oil pressure. PM me if there is any interest.
     
  9. yunit

    yunit 1/2 ton status

    Joined:
    Feb 24, 2000
    Posts:
    3,068
    Likes Received:
    0
    Location:
    Oakland, NJ
    Thanks Henry, I decided to go all out, sell the 92 and buy the new Dodge 2500 HO Cummins. /forums/images/graemlins/thumb.gif
     
  10. bablazer73

    bablazer73 1/2 ton status

    Joined:
    Apr 4, 2000
    Posts:
    3,363
    Likes Received:
    0
    Location:
    upstate ny
    so, when will the 92 be for sale and how much??
    What year dog are you looking at? If you are looking for max power, the 85-87 with the mechanical fuel pumps are the cheapest and easiest to boost power in. I have been looking for one of them, but there all 10,000 and up still. and i want a 2x xtra cab.
     

Share This Page