1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Hooker Holley ls Swap

Discussion in 'G-Body LSx Swap' started by Jdigitty88, Oct 20, 2016.

  1. oldsmobile joe

    oldsmobile joe Master Mechanic

    Joined:
    Nov 12, 2015
    Messages:
    402
    Likes Received:
    143
    Trophy Points:
    43
    Location:
    mpls
    thanks for the heads up on the mufflers. I'm afraid the same may be true for the 2.5". but i have to start somewhere.
    i am curious, were they too loud at all speeds, or was there a particular rpm range that was of concern? and what are you switching to for muffler selection.
    i have car that is on the edge of obnoxious between 1800 and 2200 rpm's. luckily its a small window that i can manipulate with gear selection.
     
  2. Anubis

    Anubis Royal Smart Person

    Joined:
    Mar 30, 2012
    Messages:
    1,223
    Likes Received:
    153
    Trophy Points:
    63
    I haven't driven it yet due to schedule and weather. It is louder than I would like at idle though. Side exit tail pipes have the tendency emphasize issues at certain RPMS and resonate. MCSS style not so much. I remember reading somewhere that Holley did their homework to reduce this issue....we will see. I haven't found a replacement muffler yet but the staggered in/out should be easy to match.
     
  3. vandall

    vandall Not-quite-so-new-guy

    Joined:
    Aug 3, 2015
    Messages:
    41
    Likes Received:
    38
    Trophy Points:
    18
    Location:
    Seattle, WA
    I agree with everything Anubis said.. I went with the full Holley swap components and they are very nice - well engineered and quality materials/welding/etc. I got the mounts, 302-2 oil pan, trans mount and the 2.5 exhaust system. I really wish they had options for the mufflers as they are too loud for my car (I want that sleeper effect). It's OK at idle but from any RPM above it's raspy and obnoxiously loud. It's really cool when you start it up for people and rev it up, but not fun around town. I'll be swapping those mufflers for some quiet ones ASAP.
     
  4. jlcustomz

    jlcustomz Master Mechanic

    Joined:
    Nov 22, 2011
    Messages:
    415
    Likes Received:
    31
    Trophy Points:
    28
    I followed the g-body ls swap preview thread on LS1 tech for a while when they were prototyping the system. A lot of clutter in the thread, but a lot of good info also including customers fitment comments of other products with the Holley system. Nice to see one of the actual product engineers running a thread & answering questions Holley is definitely the first to offer a matching system & their long tube headers look to have a much better quality, fitment & ground clearance than many other choices .
     
    • Agree Agree x 1
  5. dan stavin

    dan stavin Not-quite-so-new-guy

    Joined:
    Apr 3, 2015
    Messages:
    31
    Likes Received:
    58
    Trophy Points:
    18
    Location:
    Chicagoland
    Do you have any pics? I'm trying to decide which headers to go with. I'm between the Holley long-tubes and the mid-length. I'm also hoping they will work with the Trans-Dapt 4595 mounts I have installed currently.
     
  6. motorheadmike

    motorheadmike Royal Smart Person

    Joined:
    Nov 18, 2009
    Messages:
    1,109
    Likes Received:
    696
    Trophy Points:
    113
    Location:
    Ottawa, Ontario Canada
    Our wagon uses adapter plates and Holley long tubes. Link is in the signature.
     
  7. vandall

    vandall Not-quite-so-new-guy

    Joined:
    Aug 3, 2015
    Messages:
    41
    Likes Received:
    38
    Trophy Points:
    18
    Location:
    Seattle, WA
Loading...

Share This Page