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Thread: Let's Talk G54B Mods

  1. #26




    Array
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    Join Date
    03-20-2011
    Posts
    4,387
    Location

    Pittsburgh, PA
    Vehicle

    1980 Dodge D-50
    Engine

    G54B
    Couple of things about the 3.0 rockers: first, you must have hydraulic lifters to use them. Second, they are a 1.6 ratio to the original 1.5 ratio, so you get better performance from the same cam due to higher lift. Third, I would install new valve springs with the rockers and new lifter - old springs could break from increased compression of the springs, and new lifters so they don't collapse with the new rockers. They also are roller tip on the cam side for less friction - this is a common mod for the starquest groups.
    Pennyman1
    The best Dodge that Dodge never made
    Living the D-50 lifestyle since 1980

  2. #27

    Array
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    06-15-2014
    Posts
    3,013
    Location

    Adelaide, South Australia
    Vehicle

    1985 Mitsubishi L200
    Engine

    G63B
    Whenever I see performance mods write-ups for the 2.6, duration is the key to improved power. It's generally accepted that lift doesn't help (and depending on who is writing what, extra lift allegedly kills performance) Hydraulic heads are not ideal for performance and are incapable of operating high lift cams or HD valve springs as they rely on oil pressure to operate. Once the load against them exceeds the effort the oil pressure can exert, they no longer are able to generate full lift. Mechanical head, good porting and a wider duration cam and you're on your way to making ponies.

  3. #28

    Array
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    Join Date
    04-06-2016
    Posts
    36
    Location

    Concord NC
    Vehicle

    1981 Plymouth Arrow Truck
    Engine

    G54B
    Can anyone chime in on a recommended cam grind for my 2.6 build?
    Doug Thorley Tri-Y Headers, 38 Outlaw and full exhaust planned. Below is what schneider recommended and what I will go with unless anyone else has input based on experience.

    From Schneiders: "You want a little grind like our 250-60F"
    Yet the grinds listed on their site start at 260-270F


  4. #29

    Array
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    04-06-2016
    Posts
    36
    Location

    Concord NC
    Vehicle

    1981 Plymouth Arrow Truck
    Engine

    G54B
    Sorry...
    They recommend 250-260F but the grinds listed on their site start at 260-270F

  5. #30



    Array
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    Offline
    Join Date
    03-16-2011
    Posts
    3,624
    Location

    Sacramento, CA
    Vehicle

    1979 Dodge D-50
    Engine

    Chevy V6
    We have headers for sale in the for sale section sticky. DG Headers makes them for us. He has the full Doug Thorley try Y and a shorty unit.
    As for cams you only have 1 out there you can get and it's a regrind. So it's best to talk to your local machine shop.
    Members come and members go, But the board keeps track of them.
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  6. #31

    Array
    Status
    Offline
    Join Date
    04-06-2016
    Posts
    36
    Location

    Concord NC
    Vehicle

    1981 Plymouth Arrow Truck
    Engine

    G54B
    I already have the Doug Thorley Tri-Y and I know cams are all regrinds. The engine is rebuilt but plan to swap the cam out with one from schneiders.

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