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.

throdle body

Discussion in 'The Garage' started by 89 k5 blazer, Jan 26, 2003.

  1. 89 k5 blazer

    89 k5 blazer Registered Member

    Joined:
    Jan 21, 2003
    Posts:
    13
    Likes Received:
    0
    Location:
    Rockville, MD
    i have a friend with a 89 k5 that put a throdle body spacer in and about 1000 miles later his trans blew up. is there a reason for this or just coincidence. /forums/images/graemlins/rolleyes.gif
     
  2. Bubba Ray Boudreaux

    Bubba Ray Boudreaux 1 ton status

    Joined:
    Jan 21, 2001
    Posts:
    20,716
    Likes Received:
    2
    Location:
    Undisclosed Location
    Was the TV cable adjusted after installation of the spacer?
     
  3. mudhog

    mudhog THEGAME Staff Member Super Moderator

    Joined:
    Nov 6, 2000
    Posts:
    17,899
    Likes Received:
    2
    Location:
    portland oregon
    just coincidence /forums/images/graemlins/shocked.gif
     
  4. HarryH3

    HarryH3 1 ton status Author

    Joined:
    May 31, 2000
    Posts:
    10,384
    Likes Received:
    2
    Location:
    Georgetown, TX
    When you raise the throttle body you also change the distance between the throttle body and the transmission. This can mess up the adjustment of the throttle valve cable, which controls the line pressure in a 700R4 transmission. When that adjustment is screwed up, the tranny can self destruct. So not only did your buddy waste $90 on the spacer (which doesn't make hardly any difference in the way the engine runs) but he probably wasted his tranny too. /forums/images/graemlins/angryfire.gif
     
  5. Thunder

    Thunder 3/4 ton status

    Joined:
    Jul 20, 2000
    Posts:
    8,946
    Likes Received:
    1
    Location:
    Northeast Nevada
    Usually you have to adjust the TV cable after putting in a TB spacer. Some raise the TB up 1". That much lift will change the setting and the whole geomerty of the TV cable. Usually raising the TB will pull out the cable increasing pressures at low RPM and change the way and RPM at which it shifts. Dont know for sure if that caused your friends tranny to go bad but proper TV cable adjustment is critical in a 700r4. If it is not adjusted right it will damage the tranny in a short time.
     
  6. Bubba Ray Boudreaux

    Bubba Ray Boudreaux 1 ton status

    Joined:
    Jan 21, 2001
    Posts:
    20,716
    Likes Received:
    2
    Location:
    Undisclosed Location
    Now if I'm using a 400 tranny, will I have TV adjustments to make after installing a spacer?
     
  7. K5Dan

    K5Dan 1/2 ton status

    Joined:
    Nov 15, 2002
    Posts:
    583
    Likes Received:
    0
    Location:
    Port St. Lucie,Fl
    what kind of spacer are you going to use ?
     
  8. Bubba Ray Boudreaux

    Bubba Ray Boudreaux 1 ton status

    Joined:
    Jan 21, 2001
    Posts:
    20,716
    Likes Received:
    2
    Location:
    Undisclosed Location
    </font><blockquote><font class="small">In reply to:</font><hr />
    what kind of spacer are you going to use ? i need more info !

    [/ QUOTE ]
    I was planning on using the Helix spacer, the one that has the vortex grooves in it. But should I think twice about it, is there a better spacer out there that I should go with?
     
  9. K5Dan

    K5Dan 1/2 ton status

    Joined:
    Nov 15, 2002
    Posts:
    583
    Likes Received:
    0
    Location:
    Port St. Lucie,Fl
    what kind of fuel delivery system are you using ?
     
  10. Bubba Ray Boudreaux

    Bubba Ray Boudreaux 1 ton status

    Joined:
    Jan 21, 2001
    Posts:
    20,716
    Likes Received:
    2
    Location:
    Undisclosed Location
    </font><blockquote><font class="small">In reply to:</font><hr />
    what kind of fuel delivery system are you using ?

    [/ QUOTE ]
    I'm using Crossfire TBI. Does that help out?
     
  11. dawson444

    dawson444 1/2 ton status

    Joined:
    Jul 5, 2000
    Posts:
    1,034
    Likes Received:
    0
    Location:
    Raleigh, NC
    Guy who put the engine in my truck put in a spacer (need vac. source for brakes). He didn't adjust the TV. Roasted my 700R4 that had been rebuilt not too long ago. Now I have a 400.
     
  12. HarryH3

    HarryH3 1 ton status Author

    Joined:
    May 31, 2000
    Posts:
    10,384
    Likes Received:
    2
    Location:
    Georgetown, TX
    Crossfire TBI? Is this on an '84 'vette or a Camabird? /forums/images/graemlins/shocked.gif You'll need two spacers for a Crossfire TBI system.
     
  13. Bubba Ray Boudreaux

    Bubba Ray Boudreaux 1 ton status

    Joined:
    Jan 21, 2001
    Posts:
    20,716
    Likes Received:
    2
    Location:
    Undisclosed Location
    </font><blockquote><font class="small">In reply to:</font><hr />
    You'll need two spacers for a Crossfire TBI system.

    [/ QUOTE ]
    I didn't know that. Should I go ahead and use the spacers and what adjustments will I have to make?
     
  14. HarryH3

    HarryH3 1 ton status Author

    Joined:
    May 31, 2000
    Posts:
    10,384
    Likes Received:
    2
    Location:
    Georgetown, TX
    Is this on your K5? Crossfire TBI was only available for a few years and was never offered on trucks. It was a special intake that had two throttle bodies. So if you have 2 throttle bodies, then you'd want to put spacers under both of them. But I'm still not convinced that a throttle body spacer makes enough difference to justify their ridiculous price. /forums/images/graemlins/shocked.gif
     
  15. zcarczar

    zcarczar 1/2 ton status

    Joined:
    Feb 10, 2002
    Posts:
    2,495
    Likes Received:
    0
    Location:
    Apple Valley California
    I think he's jackin ya
     
  16. HarryH3

    HarryH3 1 ton status Author

    Joined:
    May 31, 2000
    Posts:
    10,384
    Likes Received:
    2
    Location:
    Georgetown, TX
    Naw, not the ultra-stable, level-headed Bubba Ray! /forums/images/graemlins/wink.gif
     
  17. Ryan B.

    Ryan B. 3/4 ton status GMOTM Winner

    Joined:
    Jul 18, 2001
    Posts:
    5,693
    Likes Received:
    0
    Location:
    CA
    </font><blockquote><font class="small">In reply to:</font><hr />
    I was planning on using the Helix spacer, the one that has the vortex grooves in it.

    [/ QUOTE ]

    Bubba, does this helix spacer have the "vortex grooves" on the inside of it or on the outside of it?
    /forums/images/graemlins/deal.gif /forums/images/graemlins/ears.gif
     
  18. Ryan B.

    Ryan B. 3/4 ton status GMOTM Winner

    Joined:
    Jul 18, 2001
    Posts:
    5,693
    Likes Received:
    0
    Location:
    CA
  19. Sandman

    Sandman 3/4 ton status Author

    Joined:
    Apr 15, 2002
    Posts:
    5,653
    Likes Received:
    0
    Location:
    Pocatello, ID
    When you start messing around with the fuel system you need to be extra careful! Having hot gas blasting around and catching the cars next to you on fire is not what you want! Please dont drive around with a gernade on wheels. Think of the children.
     
  20. Bubba Ray Boudreaux

    Bubba Ray Boudreaux 1 ton status

    Joined:
    Jan 21, 2001
    Posts:
    20,716
    Likes Received:
    2
    Location:
    Undisclosed Location
    </font><blockquote><font class="small">In reply to:</font><hr />
    Bubba, does this helix spacer have the "vortex grooves" on the inside of it or on the outside of it?

    [/ QUOTE ]
    The grooves are on the inside.
     

Share This Page