340 / 540 / 6.1 conversion

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    Author Topic: 340 / 540 / 6.1 conversion  (Read 5384 times)

    Offline cudabuyer

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    340 / 540 / 6.1 conversion
    « on: September 01, 2007 - 06:36:12 AM »
     been a long time, December 05; received the 70 " T / A " convertible creation with the 340 6 Pak, started the 540 (710 hp) hemi motor in March 07 (never was street viable for us - unfortunately); completing the 6.1 by the end of September



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    70 Dodge Challenger Convertible 6.1 Hemi



    Offline The Cuda Guy

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    Re: 340 / 540 / 6.1 conversion
    « Reply #1 on: September 01, 2007 - 06:52:19 AM »
    Sweet car!

    Cuda Guy
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    Offline 71bigblock

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    Re: 340 / 540 / 6.1 conversion
    « Reply #2 on: September 01, 2007 - 10:09:29 AM »
    Very nice, I like how you didnt go overboard with the chrome, looks just right between those fenders.   :2thumbs:
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    Offline GreenFish

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    Re: 340 / 540 / 6.1 conversion
    « Reply #3 on: September 01, 2007 - 10:49:06 AM »
    very nice,  What was it about the 540 that wasnt streetable? Did you have a radical cam in it? HIgh compression?
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    70 cuda, 440, KB pistons, 10.5:1 compression, edlebrock heads,RacerBrown cam, 5-Speed Tremec, Megasquirt EFI

    Swedefish

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    Re: 340 / 540 / 6.1 conversion
    « Reply #4 on: September 01, 2007 - 01:44:20 PM »
     :drool: :drool:
    Nice
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    Offline cudabuyer

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    Re: 340 / 540 / 6.1 conversion
    « Reply #5 on: September 02, 2007 - 06:10:34 AM »
    actually 10.5 to 1, supposed to be custom mid cam, just problems with the engine from the outset from the builder

    never made a good match with the convertible, i believe the hp and later upgrades for the 6.1 will make me more satisfied  :bigsmile:

    thanx for the compliments



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    70 Dodge Challenger Convertible 6.1 Hemi

    Offline widing'cuda

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    Re: 340 / 540 / 6.1 conversion
    « Reply #6 on: September 02, 2007 - 07:56:05 AM »
    Now that looks cool
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    Offline Carlwalski

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    Re: 340 / 540 / 6.1 conversion
    « Reply #7 on: September 02, 2007 - 08:01:00 AM »


    Looks good, the 6.1L Hemi is a nice engine. Dad's is awesome, real nice mechanical sound (as Hemis are), you'll enjoy it. Shame to hear the 540ci was too much for yah but never mind, looks like you're back on track.


    All the best.  :2thumbs:
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    1970 Dodge Challenger R/T
    White, License Plate, 0A-5599
    540ci Aluminium Hemi, F.A.S.T EFI
    TF-727 Gear Vendor OD, Dana 60

    Offline CrazyPete

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    Re: 340 / 540 / 6.1 conversion
    « Reply #8 on: September 02, 2007 - 01:04:10 PM »
    very cool how bad was it to swap in?
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    Offline GreenFish

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    Re: 340 / 540 / 6.1 conversion
    « Reply #9 on: September 02, 2007 - 02:59:03 PM »
    Quote from: NZ440R/T on September 02, 2007 - 08:01:00 AM

    Looks good, the 6.1L Hemi is a nice engine. Dad's is awesome, real nice mechanical sound (as Hemis are), you'll enjoy it. Shame to hear the 540ci was too much for yah but never mind, looks like you're back on track.


    All the best.  :2thumbs:

    agreed, The 6.1 hemi motor is a very good motor with a lot of potential for some real nice power with the right engine management system. The Factory cars with them are held back greatly due to the computer and they produce an honest 425hp
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    70 cuda, 440, KB pistons, 10.5:1 compression, edlebrock heads,RacerBrown cam, 5-Speed Tremec, Megasquirt EFI

    Offline GreenFish

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    Re: 340 / 540 / 6.1 conversion
    « Reply #10 on: September 02, 2007 - 02:59:55 PM »
    Quote from: cudabuyer on September 02, 2007 - 06:10:34 AM
    actually 10.5 to 1, supposed to be custom mid cam, just problems with the engine from the outset from the builder

    never made a good match with the convertible, i believe the hp and later upgrades for the 6.1 will make me more satisfied  :bigsmile:

    thanx for the compliments





    are you using FAST or AEM or some other computer on it?
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    70 cuda, 440, KB pistons, 10.5:1 compression, edlebrock heads,RacerBrown cam, 5-Speed Tremec, Megasquirt EFI

    Offline Carlwalski

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    Re: 340 / 540 / 6.1 conversion
    « Reply #11 on: September 02, 2007 - 03:32:37 PM »


    Make sure you run a proper Mopar Performance (CAI) Cold Air Induction setup, ads around 12-15hp and makes the car sound a hell of a lot better to. Dad's is stock except for that and it made a big difference. Him & Mum want it quiet for cruising but when you nail it some sound, man, this thing has a sexy sound to it. You can hardly hear it at all driving around, until you go for gold. Dad's engine bay below with the MP CAI. Looks smart.  :biggrin:
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    1970 Dodge Challenger R/T
    White, License Plate, 0A-5599
    540ci Aluminium Hemi, F.A.S.T EFI
    TF-727 Gear Vendor OD, Dana 60

    Offline cudabuyer

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    Re: 340 / 540 / 6.1 conversion
    « Reply #12 on: September 03, 2007 - 06:07:30 AM »
    not sure about the computer management but i know we have just purchased some tuner, i actually liked the fast system  XFI used by http://www.arringtonengines.com/

    we also plan on the cold air induction

    thanx for the reviews should be up and running for http://cruisinthecoast.com/
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    70 Dodge Challenger Convertible 6.1 Hemi

    Offline MoparCar

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    Re: 340 / 540 / 6.1 conversion
    « Reply #13 on: September 03, 2007 - 09:24:58 PM »
    Hey,
    Nice car!
    Can you give us some more specifics? I've got a new 6.1 in the garage for my Challenger build and would some some more details.


    Thanks, Wes
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    Offline hotrod98

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    Re: 340 / 540 / 6.1 conversion
    « Reply #14 on: September 03, 2007 - 09:45:51 PM »
    Hey cudabuyer, What trans are you using? I plan to buy one of the new 6.1 crate motors for my other 71 cuda that I'm going to restore next year and have pretty much decided to use the Keisler 5 speed to simplify things. My wife wants the same setup in her superbird clone.
    I've been asked to install a 2005 5.7 hemi /5 speed automatic setup in a 73 cuda by one of my customers and I've been told to expect problems with making the tranny fit the tunnel. The only modern driveline that I've installed so far is a 1995 5.9/A518 setup in my wife's 73 Cuda. A lot more simple than the late hemi stuff, I'm sure. Any suggestions? Thanks
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