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  1. #1

    Default Throttle Body Spacers and CAIs

    As some of you know I recently bought a CAI for my 1995 Suburban.

    I have been thinking about a throttle body spacer but I am a bit worried that it will make the CAI sit too high (it is supposed to be 1-1.5 inches thick so the throttle body will be that much higher) and that is might stress the Throttle Body itself or the CAI housing to route it to the end point, which is a box bolted to the fenderwell.

    Has anyone here used a TBI spacer with a CAI on a Full size truck or Suburban?
    Current:
    2001 K1500 Suburban
    1995 K1500 Suburban

    Previous:
    1997 Venture
    1978 400 CID Blazer
    1977 400 CID K10 Truck
    1974 350 CID K20 Truck
    1979 Z28

  2. #2

    Default

    You'll have no such problem, brother. Don't worry about that. Hurry up and bolt it on.



    Good luck!



    Jamie

    2007 Ford E250(Work van) (Ya, Ya, shut up!)
    1996 GMC Sierra SLE 1500 5.7L/4L60E

  3. #3

    Default

    Well, OK...
    Can I blame you if things don't go perfectly?

    I ordered it from JCWhitney. Should be here Monday.
    Current:
    2001 K1500 Suburban
    1995 K1500 Suburban

    Previous:
    1997 Venture
    1978 400 CID Blazer
    1977 400 CID K10 Truck
    1974 350 CID K20 Truck
    1979 Z28

  4. #4

    Default

    If the fridge door was left open....then you can blame me. You'll be fine.



    Jamie

    2007 Ford E250(Work van) (Ya, Ya, shut up!)
    1996 GMC Sierra SLE 1500 5.7L/4L60E

  5. #5
    Newbie Oldbear's Avatar
    Join Date
    Aug 2007
    Location
    Strathmore, Alberta, Canada
    Posts
    5

    Default

    Let us know how it goes. I just bought an '01 Silverado from my work (Strathmore Motor Products). I'm putting on the GM preformance exhaust, but would like to make a few engine mods as well. The TBI spacer is one that I was looking at.
    Drive it like you pay for it...

  6. #6

    Default

    Quote Originally Posted by Oldbear View Post
    Let us know how it goes. I just bought an '01 Silverado from my work (Strathmore Motor Products). I'm putting on the GM preformance exhaust, but would like to make a few engine mods as well. The TBI spacer is one that I was looking at.
    Actually it went well. Part throttle respsonse is improved by quite a bit.

    I am told that true fuel injection engine like what you have in your '01 do not see the same benefits though. You start off with a lot more power though.

    My wife has an '01 with the 5.3L and the 5.7 in my 1995 still isn't in the same class. It has improved noticeably but the '01 is still the more powerful package. Maybe towing a trailer the 5.7L would have more torque but I don't have anything to tow right now so I don't know.
    Current:
    2001 K1500 Suburban
    1995 K1500 Suburban

    Previous:
    1997 Venture
    1978 400 CID Blazer
    1977 400 CID K10 Truck
    1974 350 CID K20 Truck
    1979 Z28

  7. #7
    Jr. Mechanic
    Join Date
    Jul 2007
    Location
    Washington State, the Dry Side ( Southeastern)
    Posts
    112

    Default

    Chev2.....

    Did you have any problems with the fuel line connections on the 95? My 95 seems to have a very short travel distance with respect to the back of the block and the TBI inputs?

    Thanks for advise
    Just Another Day in Paradise...

  8. #8

    Default

    There is a fastener that has to be removed from the back of the block that attaches the fuel lines to the engine. You take that off and you have enough leeway to move everything. Taking that fastener off the back of the block was the longest step of installing the TBI spacer without a doubt.
    Current:
    2001 K1500 Suburban
    1995 K1500 Suburban

    Previous:
    1997 Venture
    1978 400 CID Blazer
    1977 400 CID K10 Truck
    1974 350 CID K20 Truck
    1979 Z28

  9. #9
    Jr. Mechanic
    Join Date
    Jul 2007
    Location
    Washington State, the Dry Side ( Southeastern)
    Posts
    112

    Default

    Thanks for that update......

    I see what you mentioned to and yes that would in fact leave some play room for the adjustment of the fuel lines.....

    Thanks I think I will "bolt one up"..
    Just Another Day in Paradise...

  10. #10
    Jr. Mechanic
    Join Date
    Sep 2007
    Location
    Los Angeles, CA
    Posts
    116

    Default

    The most important thing to check and adjust after installing the spacer is the trans kickdown cable. I have one in my '88, and I've had no clearance problems.
    '88 Jimmy 4X4
    5.3l L59/ 4L60E Tuned by Tad
    4" Lift 33" BFG. Custom Brush Guard, KCs, outside spare, Oil pan guard etc.

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