Mark VI Big block cam swap question

Discussion in 'Engine Topic' started by Powerglide350, Jul 8, 2015.

  1. Powerglide350

    Powerglide350 Veteran Member Lifetime Gold Member

    7,755
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    Jul 8, 2001
    Moriches,NY
    After scouring the internet for hours I am throwing my hands up and asking the experts....

    Does anyone have real experience with this engine? I have a stock L29 engine, I would like to get a little more power and a nice lumpy idle.

    I have heard that the ZZ502 cam is a nice swap. It would be great to use the stock non adjustable stuff, But I am not opposed to swapping out the stock stuff for screw in studs and adjustable rockers.

    Can anyone point me in the direction of what I would need for this procedure? (part numbers would be great!) I plan on using a 770 carb, with an aluminum intake and old school distributor with a melonized gear.

    I have a beefed up Th350 with a 2400rpm stall, and a stock 10 bolt posi with 3:42 gears.

    I dont need it to be too crazy, just a muscle car idle with some tire frying capabilities.
     
  2. hhott71

    hhott71 Veteran Member Lifetime Gold Member

    14,375
    1
    Mar 30, 2001
    Joplin Mo. 64801
    Any cam that you get that has the pressed on rear cast iron journal and gear will use the stock gear as it would woth a stock cam.
     
  3. krabben1

    krabben1 Veteran Member Lifetime Gold Member

    8,053
    3
    May 16, 2007
    ( . Y . )Delco
    Do you mean to say you have a GEN 5 motor?
    Already set up for a roller cam?
    I have a GEN 6 454,that I just put the 502 cam in.
    It,in itself is a direct bolt in with no other mods,if your already set up for a roller.
    (I keep saying that because Im not sure if all GEN 5 blocks are roller).
    I changed out my zero lash rockers,and springs,but many didnt that did the swap.
    There is alot of info over at chevelles.com about this very thing.
    If you mean to say you have a MARK IV(4),then youll need alot more parts to be able to use the roller cam,but it in itself will go into the block.
    Also,new chevy roller cams come with billet gears,and they do say a melonized gear is required with them.As far as BBs go.
     
  4. Powerglide350

    Powerglide350 Veteran Member Lifetime Gold Member

    7,755
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    Jul 8, 2001
    Moriches,NY
  5. krabben1

    krabben1 Veteran Member Lifetime Gold Member

    8,053
    3
    May 16, 2007
    ( . Y . )Delco
    Me too.
    Slides right in.
    189.00 at summit for chevy brand.

    Edit-Where the hell did I get Gen V from lol.
     
  6. Powerglide350

    Powerglide350 Veteran Member Lifetime Gold Member

    7,755
    0
    Jul 8, 2001
    Moriches,NY
  7. Powerglide350

    Powerglide350 Veteran Member Lifetime Gold Member

    7,755
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    Jul 8, 2001
    Moriches,NY
    Whoever fixed my million replies....thank you
     
  8. krabben1

    krabben1 Veteran Member Lifetime Gold Member

    8,053
    3
    May 16, 2007
    ( . Y . )Delco
    If you want the part numbers of the stuff I used,Ill post them.
    I went with all Comp stuff.
    My biggest improvement with the motor was just swapping out the stamped rockers for the comp ultra pros.
    Thing woke up immediatly.
    IDK if youre getting new lifters,but the GM brand are way expensive.
    They are made by Sealed Power and are much cheaper if you buy them that way.
    I went with comp lifters.
     
  9. Powerglide350

    Powerglide350 Veteran Member Lifetime Gold Member

    7,755
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    Jul 8, 2001
    Moriches,NY
    If you could post the part numbers that would be awesome!
     
  10. krabben1

    krabben1 Veteran Member Lifetime Gold Member

    8,053
    3
    May 16, 2007
    ( . Y . )Delco
    Last edited: Jul 8, 2015

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