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Thread: 327 Build Cam Selection
          
   
   

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  1. #76
    36 sedan's Avatar
    36 sedan is online now CHR Member Visit my Photo Gallery
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    Car Year, Make, Model: 36 Ford Sedan, 23 T Bucket
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    Quote Originally Posted by H.O.Rider View Post
    Car is built to look like an L79 Nova that's why I didn't chose an LS or a big block. I'm building an LS for my CJ7 presently.

    My cam choice at present is a Hydraulic Roller from Howards

    278/278 225/225 .525"/.525" lift with 1.5 rockers or .560" lift with 1.6 ground on a 110 LSA or possibly 108
    That's a BIG cam for a 327, it'll be pretty rumpity! Reminds me of my '62 vette back in the days, lol! Light weight car, good gearing, 4 speed, it'll be fun!

  2. #77
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    rumrumm is offline CHR Member Visit my Photo Gallery
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    Car Year, Make, Model: '32 Ford 3W Coupe, 383 sbc
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    With 10.3:1 compression ratio, you will want to be careful about your dynamic compression ratio so you don't have a problem with detonation on pump gas. Use one of the DCR calculators like Wallace Racing: Dynamic Compression Ratio Calculator to plug in specs. Intake valve closing at ATDC is critical. For instance, my 383 has 10.6:1 static compression, and I originally was thinking about running a particular CompCam XE-274 but with its ATDC at 64 degrees, it put my DCR over 8.5 which is a no-no with pump gas. So I chose their Magnum 280 which had similar specs. It has a ATDC at 66 degrees which gave me a DCR of 8.46 which is acceptable for aluminum heads and 92 octane. I hope this helps.
    Dave Severson and 34_40 like this.


    Lynn
    '32 3W

    There's no 12 step program for stupid!

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  3. #78
    H.O.Rider is offline CHR Member Visit my Photo Gallery
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    Quote Originally Posted by 36 sedan View Post
    That's a BIG cam for a 327, it'll be pretty rumpity! Reminds me of my '62 vette back in the days, lol! Light weight car, good gearing, 4 speed, it'll be fun!
    I'm running a 327 right now with similar compression, except for double hump iron heads, with a Comp Magnum 280 cam. Its got a nice lopey idle. Not too big of a cam, makes about 10-11 inches of vacuum at 700 RPM if I recall

  4. #79
    H.O.Rider is offline CHR Member Visit my Photo Gallery
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    Quote Originally Posted by rumrumm View Post
    With 10.3:1 compression ratio, you will want to be careful about your dynamic compression ratio so you don't have a problem with detonation on pump gas. Use one of the DCR calculators like Wallace Racing: Dynamic Compression Ratio Calculator to plug in specs. Intake valve closing at ATDC is critical. For instance, my 383 has 10.6:1 static compression, and I originally was thinking about running a particular CompCam XE-274 but with its ATDC at 64 degrees, it put my DCR over 8.5 which is a no-no with pump gas. So I chose their Magnum 280 which had similar specs. It has a ATDC at 66 degrees which gave me a DCR of 8.46 which is acceptable for aluminum heads and 92 octane. I hope this helps.
    Absolutely will do. the 278 cam on 110 makes very close to 8.5 DCR on my application
    Dave Severson likes this.

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