AFR or Edelbrock
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AFR or Edelbrock

  1. #1
    BTC cardcarrying member SuperSoaker's Avatar
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    Default AFR or Edelbrock

    I just found some bad bearings in my backup motor
    So I'm thinking of building a 540. I have a set of AFR 305 w/cnc chambers and pockets and a set of stock Edlebrock RPM Marine heads 315/300.
    Which heads would be best???
    Looking to build around a 10 to 1 motor.



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  3. #2
    cfm
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    Performance wise - AFR hands down.

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    steelcomp was here
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    Ditto
    If God is your co-pilot, change seats!
    Acts 2:38, the perfect answer to the perfect question.

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  6. #4
    gn7
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    Quote Originally Posted by SuperSoaker View Post
    I just found some bad bearings in my backup motor



    This qualifies as a MAJOR UNDERSTATEMENT



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    B.A.M aka "Black Azz Mike 396_Ways_To_Spit's Avatar
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    AFR!!!!!! Waaaaay better heads
    G H E T T O F O E L I F E
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    Senior Member Notalent's Avatar
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    Did you even have to ask???? If those AFR 305's were in my budget I would be all over them!
    "Pain is a figment of your Imagination"

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    Super Moderator HammerDown's Avatar
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    Question

    Damn Don and I thought I had bearing problems!
    You're running a quality synthetic oil, oil cooler, and safe oil temps...what happened???
    I know you run it hard and long but it's not like you're cooking the oil.
    Did you ever see any silver dust in the oil when changing or cut open a filter, any odd noises etc?
    <img src=http://www.performanceboats.com/gallery/data/500/medium/06-30-11_1234.jpg border=0 alt= />

  10. #8
    adjones419 Wet-n-Wild's Avatar
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    Use the AFR's and sell the Edelbrock heads to me. I need them for a lake engine.
    I have the AFR 357 CNC heads on my blown-injected alcohol piece. They made the Dart 355 CNC heads we have on the N/A motor look like a hunk of scrap aluminum.
    Adam
    Hallett 210

  11. #9
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    I'd say something is not in spec when it comes to the bottom end. I would agree with the board use the 305's. They can make some very good power. Don't know who you use in MD but Mike Tompkins in Waldorf is very good.
    Chris Straub
    Straub Technologies

    3HP is an A$$ Whooping!!! JW

  12. #10
    BTC cardcarrying member SuperSoaker's Avatar
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    Quote Originally Posted by HammerDown View Post
    Damn Don and I thought I had bearing problems!
    You're running a quality synthetic oil, oil cooler, and safe oil temps...what happened???
    I know you run it hard and long but it's not like you're cooking the oil.
    Did you ever see any silver dust in the oil when changing or cut open a filter, any odd noises etc?

    Not my motor it was a motor I picked up for a back up and it came with the edlebrock heads.

    so do I take the AFR305 off a good running motor or use the Edlebrock 315 heads

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    If it is jsut a back up engine and it has the Edelbrocks on it then I would leave it as is. .. diagnose the bearing issue. . fix it and put it back together after a good check up. I would not piece out your good motor to fix this one.
    Chris Straub
    Straub Technologies

    3HP is an A$$ Whooping!!! JW

  14. #12
    steelcomp was here
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    I'd be more worried about what caused the beaaring issues than the heads at this point...
    and I agree with Chris...back up engine, back up parts...not that you can't make the Eddy's work just fine.
    If God is your co-pilot, change seats!
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  15. #13
    BTC cardcarrying member SuperSoaker's Avatar
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    Thanks for the help

    It is a stock GM 502.. he ran the oil temp up to 300 a lot
    it was at 310degs and he was on the juice at the same time this happened
    needs a crank and some rods so I'm thinking a 540 kit would be the ticket.
    plan on having the block checked then new crank,rods and pistons.
    That the plans right now.

  16. #14
    Super Moderator HammerDown's Avatar
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    Quote Originally Posted by SuperSoaker View Post
    Thanks for the help

    It is a stock GM 502.. he ran the oil temp up to 300 a lot
    it was at 310degs and he was on the juice at the same time this happened
    needs a crank and some rods so I'm thinking a 540 kit would be the ticket.
    plan on having the block checked then new crank,rods and pistons.
    That the plans right now.
    540...
    Damn Donny you're killing me over here ...I better get on the hunt for another 598
    <img src=http://www.performanceboats.com/gallery/data/500/medium/06-30-11_1234.jpg border=0 alt= />

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