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LS1 & T56 Conversion to VK Calais

Discussion in 'VB - VK Holden Commodore (1978 - 1985)' started by VBRED, Aug 14, 2012.

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  1. Sep 6, 2012 #21
    VBRED

    VBRED Member

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    It has been over 10 years since the release of the LS1. I think that the piston slap issues would have been sorted by now. With the extractors and exhaust fitted, a new bigger throttle body and otgr + mafless tune I am told to expect about 270KW.

    I will look be behind the dash to install the ECU. I want to keep the aircon. (Black car and leather seats).

    As suggested i will massage the tunnel to fit the solenoid and worry about the throttle cable later.

    From what i have been told the LS1 is about 40kg lighter that the 308.

    The engineer is booked in.
     
    VBRED, Sep 6, 2012
    #21
  2. Sep 7, 2012 #22
    VBRED

    VBRED Member

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    VBRED, Sep 7, 2012
    #22
  3. Sep 11, 2012 #23
    VBRED

    VBRED Member

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    The engineer inspected the car. He did not like the engineered gearbox crossmember so I have to get it reinforced. Also the sump sit to close to the K Frame. I have to notch the K frame and get it reinforced.
     
    VBRED, Sep 11, 2012
    #23
  4. Sep 16, 2012 #24
    ER0RR

    ER0RR Guest

    Yeh typical. The F-wit who inspected mine had a problem with my crossmember too. For some reason, Castlemaine Rod Shop thought it'd be a good idea to put one diagonal little piece of "support" on one side of the crossmember, but not the other. He told me to get that diagonal piece thing done on the other side too. I didn't, and drove the car (hard) for about 2 years without a problem.

    You don't have to touch the K-frame. Modify the back of the sump like I did (if you can still easily take the motor out). Chop 2 centimeters off the corners. Less work, less time, less headaches, much easier.
     
    ER0RR, Sep 16, 2012
    #24
  5. Sep 16, 2012 #25
    ER0RR

    ER0RR Guest

    Yes, but your engine still came out of a VT.. which had the piston-slap probs.
    And in case you didn't know, mafless isn't legal. Cops are aware of this and will d##k you for it if you get pulled over.
    + that's 270kW at the flywheel in case you didn't know. So about 215 @ the wheels. And if you leave the MAF in place.. less.
     
    ER0RR, Sep 16, 2012
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  6. Sep 16, 2012 #26
    *uwishn*

    *uwishn* Holden special vehicles

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    i'am subscribe,keep up the great work!
     
    *uwishn*, Sep 16, 2012
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  7. Sep 17, 2012 #27
    m1lky

    m1lky New Member

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    Probably get away maf less in a vk though. They didn't have them originally
     
    m1lky, Sep 17, 2012
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  8. Sep 18, 2012 #28
    VBRED

    VBRED Member

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    ERORR

    I am happy if it pumps out around 220KW at the wheels similar to my old stroker engine. It is only a cruiser not for strip. I don't want to be changing clutches, gearboxes and diffs. My car is not dropped on it's guts or fitted with 20inch wheels. I am an old fart and don't do burn outs or doeys or skids so the cops tend to leave me alone even though I have pulled up at the lights beside them the engine lumping over and noisy as.

    It is eaiser for me to modify the K frame then change the sump.
     
    VBRED, Sep 18, 2012
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  9. Nov 13, 2012 #29
    Jonno

    Jonno :)

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    bump, lol
    any progress?
     
    Jonno, Nov 13, 2012
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  10. Nov 20, 2012 #30
    VBRED

    VBRED Member

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    Little progress on the mechanical side. Currently taking the shell back to bare metal. Hopefully get some paint on it early next year.
     
    VBRED, Nov 20, 2012
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  11. Dec 9, 2012 #31
    RACE5L

    RACE5L Solid cammed

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    The only engine im told you can get away with MAFLESS is a C4B, but that was from an internet source. Have you checked the alignment of your gearbox to diff pinion? I am looking for a gearbox crossmember for a T56 into VH and one build I followed had issues with off the shelf mounts and ended up having to fabricate his own. I have Tuff mounts for the engine, but may swap to go lower.

    ERORR: It is lucky the LS1 engine weighs less as it is the part that hangs over the front tyres. As a driveline swap, any loss in weight in the engine is made up in the T56's bulky weight coming in at around 75kgs. A trimatic is in the low 40s...
     
    RACE5L, Dec 9, 2012
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  12. Dec 9, 2012 #32
    VBRED

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    Maybe a maflees tune after engineering. Maybe a set of upper adjustable diff arms to get the pinion angle ok. I have an off the shelf gearbox crossmember but the engineer is not happy with it. I might fabricate a new one.

    THe T56 is a big box. Not surprised it weighs 35kg more then atrimatic.
     
    VBRED, Dec 9, 2012
    #32
  13. Apr 22, 2013 #33
    ER0RR

    ER0RR Guest

    Tremec T56 Transmission Repair & Rebuild - Popular Hot Rodding Magazine
    "All T56s feature die-cast aluminum construction, paring mass to a trim 130 pounds."
    130lbs = 59kgs
     
    ER0RR, Apr 22, 2013
    #33
  14. Aug 2, 2015 #34
    Jam43

    Jam43 New Member

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    Can anyone tell me what they have done about the tail shaft when doing the conversion
     
    Jam43, Aug 2, 2015
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  15. Aug 3, 2015 #35
    _R_J_K_

    _R_J_K_ Well-Known Member

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    At a guess you'll have to go custom.
     
    _R_J_K_, Aug 3, 2015
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  16. Aug 3, 2015 #36
    Sandman

    Sandman Challenge Accepted

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    Use either the tailshaft from either the car or the donor car the engine came from and shorten to the length needed as well as the rear mount for the diff changed. Should be fairly straight forward for a shop to do if you have your measurements right.
     
    Sandman, Aug 3, 2015
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  17. Jun 30, 2018 #37
    Yonzi

    Yonzi New Member

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    Yonzi, Jun 30, 2018
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