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Thread: Tunnel ram selection

  1. #1
    tahitijet
    what is a good recomended tunnel ram for a jet with a 468. I plan to run about 10:1 compresion with 2 600 or 660 carbs.
    thanks

  2. #2
    FoMoCo
    I am runnin an Weiand Tunnel ram with 2 750 dps holleys atop a mild 429 bbf it works really good, always starts & never stumbles, Always uses a lot of fuel!!!! My Chevy friend was runnin a Weiand tunnel on his 427 with 2 780 vac sec Holleys, his was also in a Jet. His ran really good also.. Oh ya both motors where around 11:1 compression..

  3. #3
    Bahner tunnel
    I have heard some mixed reviews on the Holley Pro Dominator (rich/lean from cylinder to cylinder). On the other hand I have heard that the Dart and Victor tunnel rams are solid performers . Of course this all could be B.S.

  4. #4
    Hotcrusader76
    I run the Edelbrock (Square port) Tunnel Ram with two 660's. Starts on first turn everytime!
    Mallory Comp 110 Fuel Pump and Braided line

  5. #5
    djdtpr
    I am running a weiand rectangle port with a pair of BG 850's starts every time.My buddy riverratt is running a weiand rectangle port with a pair of short bowled holley 750's and it starts and run's every time also.

  6. #6
    stressedout
    One thing to keep in mind is square port tunnel rams like a lot of rpm. You will loose some low rpm torque. They make more power in the higher rpm range 6000 and up.
    I run a weiand that has been ported and turn 8200-8400 rpm in the hydro.

  7. #7
    565edge
    Run either a victor ram or dart,i run a dart with two 1150 dominators and spin my little "jetboat" 7500 rpm with 96 jets no nitrous.

  8. #8
    hack job
    iam running the weidand hi-ram tunnel ram but it has been port matched to my heads and it has two 750 dps on top.

    wink

  9. #9
    DUCKY
    Edelbrock makes a street-ram that supposedly good for 3500-7000 rpm. You just have to make sure that the cam and manifold work together, otherwise you will end up with a dog! Tunnel-Rams are not the greatest thing on a jet, because jets like torque, and lots of it! depending on your setup, I would run either 2 600 vacuum secondaries, or you might look into a pair of the 450cfm carbs that Holley make for Nascar use. They are double pumpers, with dual inlet, center hung floats, and no choke. They actually flow about 525cfm each. They would look cool, run great, and not suck down the fuel for no reason.

  10. #10
    DUCKY
    Call George Streagle at Clay Smith Cams for a manifold and cam combo that work together!

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