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.

New engine power?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Predator, Jul 8, 2001.

  1. Predator

    Predator 1/2 ton status

    Joined:
    Jun 19, 2001
    Posts:
    130
    Likes Received:
    0
    Location:
    OKC,OK
    Hey all! Just finished rebuilt motor and am disappointed with the power. The motor is a 350, 30 over, flat tops, Comp xtreme 4X4 cam, edelbrock performer intake and carb, flowtech afterburner open headers. The truck is an 83 with 700r4 tranny shifting at 2400, 31" tires. It's faster than my g/f Cavalier but not by much. It has great throttle response in park but didn't plant me in the seat when I was seating the rings. I've broke the cam in and have about 14 miles on it. Does this sound right? Could the tranny be my problems or is this all it has.
     
  2. Pugsley

    Pugsley 1/2 ton status

    Joined:
    Jan 16, 2001
    Posts:
    3,556
    Likes Received:
    0
    Location:
    Tucson, Arizona
    What gears are you running? If you've got 3.08's like most 83's do, it's not going to tickle your pickle. It's also going to take quite a bit more time to properly break in - My crate 350 took over 1500 miles before the rings completely seated. Just give it time and fiddle with it - sounds like you have a good combo there.

    <font color=red>Cripplefight!!</font color=red>
    <A target="_blank" HREF=http://pugsley.alloffroad.com>http://pugsley.alloffroad.com</A> Updated finally[​IMG]
     
  3. CaptCrunch

    CaptCrunch 1/2 ton status

    Joined:
    Feb 2, 2001
    Posts:
    3,596
    Likes Received:
    1
    Location:
    Minnesota
    Well remeber the engine needs to break in and the rings need time to start sealing properly. What gears are in your truck? What compression ratio you running? What size cam? What cylinder heads? All this plays a key role in your performance. Like the old saying... your engine is only as powerful as it's weakest link.

    -Mikey
    1987 Chevy K5 Blazer- 350 TBI
    <A target="_blank" HREF=http://www.geocities.com/milnerlives_2000/blazer.htm>http://www.geocities.com/milnerlives_2000/blazer.htm</A>
     
  4. Predator

    Predator 1/2 ton status

    Joined:
    Jun 19, 2001
    Posts:
    130
    Likes Received:
    0
    Location:
    OKC,OK
    It prob has the 3.08's. The cam is the 447 with rebuilt stock heads. I can only tell a mild difference in this engine and the old 305!
     
  5. shawnboy

    shawnboy 1/2 ton status

    Joined:
    Jun 22, 2001
    Posts:
    468
    Likes Received:
    0
    Location:
    Toronto, Canada, eh.
    Like Pugsly says, your gear set could be holding you back. I went to 3.73 and what a difference. Yes, your tranny can hold you back as well. Shift overlap on 700s is awful but nothing a good shift kit woudn't cure.
    An MSD or Accel ignition woudn't hurt either.
    Shawnboy.

    If you are having too much fun it's probably illegal.
     

Share This Page