Cam Shaft oppinions needed
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Cam Shaft oppinions needed

  1. #1
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    Default Cam Shaft oppinions needed

    Wondering how this cam would perform in a 18ft jet,454 with an "A" Impeller and Berk pump.

    Herbert cam part# B4S SOLID F/T CAM
    adv.dur. 300int 310ex
    @050 248int 258ex
    valve lift .570 .595
    lobe center 110
    lash .014 .014
    center line 108
    @ 050 int open 19 close51
    ex open 62 close 17

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  3. #2
    steelcomp was here
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    Quote Originally Posted by JEThro View Post
    Wondering how this cam would perform in a 18ft jet,454 with an "A" Impeller and Berk pump.

    Herbert cam part# B4S SOLID F/T CAM
    adv.dur. 300int 310ex
    @050 248int 258ex
    valve lift .570 .595
    lobe center 110
    lash .014 .014
    center line 108
    @ 050 int open 19 close51
    ex open 62 close 17
    What heads and valve train?
    Just an FYI...flat tappet cams are a real crap shoot these days. I wouldn't install one in a customers engine if they asked me to. This is nothing against Herbert or any other name or brand out there. Just a fact of the industry these days. The risk of one going flat, no matter what precautions you take, is just to high.

    As far as the grind, it's probably a little aggressive for a "stock" 454 and an A, running in the 4800-5000rpm range. It would be good with some compression, better exhaust and intake and good valve train.
    If God is your co-pilot, change seats!
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  4. #3
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    Join Date
    Dec 2007
    Posts
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    Quote Originally Posted by steelcomp View Post
    What heads and valve train?
    Just an FYI...flat tappet cams are a real crap shoot these days. I wouldn't install one in a customers engine if they asked me to. This is nothing against Herbert or any other name or brand out there. Just a fact of the industry these days. The risk of one going flat, no matter what precautions you take, is just to high.

    As far as the grind, it's probably a little aggressive for a "stock" 454 and an A, running in the 4800-5000rpm range. It would be good with some compression, better exhaust and intake and good valve train.
    Heads are cast#6272292, E-brock tram w/2x450s, compression unknown and ot headers. I'll have more info on the motor once I get it apart. The cam is brand new and was given to the owner of the boat. The motor turned 5600rpms at 74mph with no setup work. Lost oil pressure the last time out. Oh the fun of buying a used boat!!

    Thanks for the input SC!

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