Help me pick a roller cam

Discussion in 'Engine Topic' started by JWZ28, Nov 9, 2014.

  1. JWZ28

    JWZ28 Veteran Member

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    I'm thinking about going roller in my 355. I enjoy my engine and it runs well, but I have to admit it's pretty slow, and I'd like to squeeze some more power out of it. I don't have a huge budget, so aluminum heads are out for the time being, but I figured going roller would add some good power. I understand I may have to change the valve springs on my current heads depending on the cam.

    Heres my current setup: 78 Z28 Camaro 4spd
    355ci
    HO 305 heads (about 10:1 compression)
    Lunati Voodoo flat tappet cam 489/504 lift
    Headers
    Eddy Performer RPM intake
    MSD street fire ignition box and HEI distributor
    MSD Atomic EFI
    3.73 posi

    My current cam: http://www.lunatipower.com/Product.aspx?id=1984&gid=287

    Here's a couple cams I'm looking at. I'd like to stick with the Lunati line of cams, but I'm open for suggestions.

    http://www.lunatipower.com/Product.aspx?id=1989&gid=289

    http://www.lunatipower.com/Product.aspx?id=1990&gid=289

    http://www.lunatipower.com/Product.aspx?id=8673&gid=403

    http://www.lunatipower.com/Product.aspx?id=8675&gid=403

    Any educated input on what would work well with my setup would be great. Thanks!
     
    Last edited: Nov 9, 2014
  2. night rider

    night rider Veteran Member

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    Oh man, do heads, any heads, just get those 305 junkers off and you will gain power. No cam swap in the world will gain you very much with those heads.

    I'm not try to down your engine or you, but just trying to help you get where you want to be via the cheapest route. The heads are your problem on engine feeling slow, not the cam. In fact you have a pretty good cam. Nothing wrong with a flat tappet cam. Many 400-500 HP engines have been built with flat tappet cams.

    If nothing else look on CL or in local junkyard and get a set of stock vortec heads for a couple hundred bucks and a summit stage III vortec intake and some $40 howards springs and do the ghetto grind on the retainers. The vortec heads will pick you up 35-40 HP over those 305 HO heads.

    Heads are the #1 place for power gain.

    The roller cam you linked to says "retro" fit, so I take it you have a 2 pc rear main seal block.. You know the retro fit roller cam set up is gonna run you $700-900 easy right? Cam at $350, lifters at about the same, new pushrods, cam button, etc.

    You will make much more power by putting that grand into heads.

    If you want a good gain on a budget go with vortec heads, if you want to spend up to $1300 (only about $400 more than the roller cam swap) then look at Brodix IK heads or pro filer heads.

    I see your in AL., not sure what part but look at these
    http://bham.craigslist.org/pts/4711627292.html
    http://gadsden.craigslist.org/pts/4714389842.html
    http://tuscaloosa.craigslist.org/pts/4690403113.html
    http://huntsville.craigslist.org/pts/4726426665.html
    $150 to $300 for heads
    $500 for vortec heads, air gap intake and cam
    $400 for vortec 350 long block that needs rebuilding
     
    Last edited: Nov 9, 2014
  3. hhott71

    hhott71 R.I.P 11/19/18 Lifetime Gold Member

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    Heads wake up a mild cam.
    Look at the LS engines. Those heads flow tons of air and perform like crazy on small duration cams.
     
    Last edited: Nov 9, 2014
  4. CorkyE

    CorkyE Veteran Member Lifetime Gold Member

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    Another pitch for heads. No kind of performance cam is going to work well with those heads. Saw a local CL ad the other day, guy is selling a set of Eddy RPM's with less than 5K miles for $800. Vortec's are an excellent choice also but you need a specific intake for them.
     
  5. JWZ28

    JWZ28 Veteran Member

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    Ok looks like I need to be patient with the budget and go for some heads, even if I just go vortec. The guy who built my engine can build a set of vortecs to run with whatever cam I choose, so I may just slowly get what I need to do it all at once. Would I have to get different headers as well if I went vortec? I guess I need to hit up the vortec sticky.

    Any particular aftermarket aluminum heads I should be considering? I know AFRs pretty much take the cake but they're pretty steep.

    Thanks for the input fellas, much appreciated.
     
    Last edited: Nov 9, 2014
  6. 1971SS

    1971SS Veteran Member

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    AFR isn't the only cake in town...

    look at the Jegs SBC head, their made by Pro-filer...or, look at the Pro-filers...

    Jegs puts those on sale frequently...
     
  7. grzewnicki

    grzewnicki Veteran Member Lifetime Gold Member

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    Your old headers will work. Water temp sensor is different I believe (smaller port on vortec head), I moved mine from the head to the intake manifold, works fine. Someone I believe posted a part number for one that works with our gauges....maybe someone will chime in with that info.
     
  8. JWZ28

    JWZ28 Veteran Member

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    Wow those Jegs heads are very reasonable. Still about the same as edlebrock and some others for a pair. I'll be able to run the intake and cam I have with them too. Thanks a bunch
     
    Last edited: Nov 9, 2014
  9. txfbodyfan

    txfbodyfan Veteran Member

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    Clearly, head's will be the best bang for the buck!!! Checkout racingjunk.com or yellowbullet you have the most common v8 on the planet. Buy heads.

    You run a 4 speed go for a monster cam!!!!
     
  10. txfbodyfan

    txfbodyfan Veteran Member

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    Clearly, head's will be the best bang for the buck!!! Checkout racingjunk.com or yellowbullet you have the most common v8 on the planet. Buy heads.

    You run a 4 speed go for a monster cam!!!!
     

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