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  1. #31
    427
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    Spot on EH. Use what you have. The 195's will work like a motherf..
    The 400 will love you for it..
    Just do it. Remember back in the days of cast iron heads, we did not have shit to choose from. EH is right. Don't overcomplicate it..it will make plenty of power 👍👍

  2. #32
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    hi
    Just trying to make it all it canbe .

    Roller lifters have specific max seat pressures . The COMPetition head springs would have squashed the lifters. And yes I checked what the Comp cam spring recommendation is . The street head springs were a better match . I ordered the head with the down graded springs .

    As a result I can avoid to lose some of the excessive bottom end rpm TQ . The quality good breathing single plain will stretch the top end make power to 6000rpm and ensure the engine redlines about 6400. Perfect for Hydro roller lifters ,they will be maxed out .

  3. #33
    427
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    You have definiately done your research mate. Chuck it together and see..

  4. #34
    Do you ever leave? paulzig's Avatar
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    Quote Originally Posted by swampy View Post
    hi
    Just trying to make it all it canbe .

    Roller lifters have specific max seat pressures . The COMPetition head springs would have squashed the lifters. And yes I checked what the Comp cam spring recommendation is . The street head springs were a better match . I ordered the head with the down graded springs .

    As a result I can avoid to lose some of the excessive bottom end rpm TQ . The quality good breathing single plain will stretch the top end make power to 6000rpm and ensure the engine redlines about 6400. Perfect for Hydro roller lifters ,they will be maxed out .
    I would have ordered the heads without spring used 180LBS seat 480 Open and used a -9 billet core instead of the austempered iron stuff... With morel hydraulic lifters...

  5. #35
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    HI
    They are Morel lifters . Checked with them cannot remember but if u check around all the hyda roller lifter I checked at the time had a spring pressure limit 380-400 lbs open .
    Have I missed the point . Are u saying the cam is the problem , flexing ??? I would have thought the lifter hydraulics and roller axle and the weight of said lifter.. Maybe I need more info from these cam companies …. Thoughts ??

  6. #36
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    Quote Originally Posted by swampy View Post
    HI
    They are Morel lifters . Checked with them cannot remember but if u check around all the hyda roller lifter I checked at the time had a spring pressure limit 380-400 lbs open .
    Have I missed the point . Are u saying the cam is the problem , flexing ??? I would have thought the lifter hydraulics and roller axle and the weight of said lifter.. Maybe I need more info from these cam companies …. Thoughts ??
    You have a cheap cam core anyway... the billet -9 doesnt cost that much more, no more than a bottle of jack or a carton

  7. #37
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    Hi
    That's where I got screwed by a well known Ozzy supplier **** all advice then charged more than quoted . I had asked around if the shop was shut at one stage hint hint .
    ****`n useless as tits on a bull they were once they had a deposit .

    I did no of the harder core cam but I did forget . Yes I would have saved me buying the special distributor plastic gear would it not ???

    Who do u get parts from ???.

    I can see a cam change in my future 236/242 or 242/248 at Ls 108..
    Current cam230/236 ground 4deg adv so its going in either at 4--8 deg retarded to enhance more top end .

  8. #38
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    Didnt Mamo get pinged for fudging flow figures a long time ago?

  9. #39
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    Hi
    Guy
    Yep the chevy world is full of bullsh.t .
    Just seen some 220cc 2.4 pinch point heads with 330cfm flow but via a 1205 gasket . This makes me wonder . If they work they are fairly priced cheaper than AFR
    The equations these head guys use once compared can say 2 different things !! I`m hearing you .

    Tony is definitely a sales man .

    I do think u need special tools to measure flows properly re AFR . Are they fudging figures dunno !!!! I`m sure people with more money than I would check his performance data . If I had a flow bench near me I would get `em checked .

    People do say things about AFR its true but the castings are thin walled because there machined to absolute max . They are one of the best for off the shelf as they are not tru custom hand ported etc
    Not many others double CNC cut to get better flows . In saying that the cheaper heads are using good copied port profiles now it seems .

  10. #40
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    Quote Originally Posted by guy incognito View Post
    Didnt Mamo get pinged for fudging flow figures a long time ago?
    I wouldn't think so, I've dealt with him a bit for some LS stuff and he's a pretty stand up guy.

    He's got his own thing going on now but I think he might still do some design/consulting work for AFR.

  11. #41
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    HI
    Easy to say about LS when an early chev head has the capabilities of a vacuum cleaner .

  12. #42
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    Quote Originally Posted by swampy View Post
    Hi
    That's where I got screwed by a well known Ozzy supplier **** all advice then charged more than quoted . I had asked around if the shop was shut at one stage hint hint .
    ****`n useless as tits on a bull they were once they had a deposit .

    I did no of the harder core cam but I did forget . Yes I would have saved me buying the special distributor plastic gear would it not ???

    Who do u get parts from ???.

    I can see a cam change in my future 236/242 or 242/248 at Ls 108..
    Current cam230/236 ground 4deg adv so its going in either at 4--8 deg retarded to enhance more top end .
    The gear on the distributor is a non-event, if its billet steel you use a steel or bronze, if its a pressed on cast you use cast gear.. Use the 230/236 put it in 4 advanced as it is... The problem isnt the intake side of the cam, its always the exhaust if you give it an earlier exhaust valve open it will rev up even with an early intake close... A lot of people are doing it, they just dont tell anyone... If you had it 230/245 .630/.570 109LSA+2 it would rev up to 6500+ and still make good power at 2000-5000, but people always shit on the notion so people keep quiet about it...

  13. #43
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    400ci. peak at 6000rpm? it'll go like the clappers.

  14. #44
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    Quote Originally Posted by HQ308Ute View Post
    400ci. peak at 6000rpm? it'll go like the clappers.
    If you are peaking 6000, you wanna make sure it can hold power for another 8-10% in the over rev so 6500-6600, enough on the exhaust or an exhaust opening that is early enough helps...

  15. #45
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    Quote Originally Posted by paulzig View Post
    The gear on the distributor is a non-event, if its billet steel you use a steel or bronze, if its a pressed on cast you use cast gear.. Use the 230/236 put it in 4 advanced as it is... The problem isnt the intake side of the cam, its always the exhaust if you give it an earlier exhaust valve open it will rev up even with an early intake close... A lot of people are doing it, they just dont tell anyone... If you had it 230/245 .630/.570 109LSA+2 it would rev up to 6500+ and still make good power at 2000-5000, but people always shit on the notion so people keep quiet about it...
    It was mentioned earlier in the thread, to close the lash on the exhaust valve further, down to .018-.016".
    My concern would be reducing the seat time on the exhaust, allowing the valve/seat to start burning causing damage and increase the water temp' for a street driven engine.
    On a race engine, not so much an issue as they would run cooler fuels and get pulled down and inspected often.

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