My 350 Build

Discussion in 'Small Block Tech' started by Brian350skylark, Jul 7, 2013.

  1. alec296

    alec296 i need another buick

    I suggest that with 020 thicker gaskets that you take off 040 and the big valves will take up alittle cc. Think you will be very close at that point and should not cause intake issues.I believe you will be good even at 10.25.I think you should consider E85 fuel .have a decent combo for it,higher octane and runs cooler.just my thought considering the comp you are shooting for.find out what the cc is with the new valves before any milling if you can.I would like to see how much the bigger valves take up.
     
  2. Brian350skylark

    Brian350skylark Guzzling Gas & Haulin Ass

    They have to cut for the larger valves and then mock it up in order to cc the heads and get an accurate measurement. Then they will cut from there and make sure it gets to 51cc's. I was asking if the could mill the intake side without dis-assembling again because it seems like that would cost extra.

    ---------- Post added at 06:49 PM ---------- Previous post was at 06:48 PM ----------

    They are going to install the new valves and then measure the ccs and give me a call to make sure on what i want to do about the intake side.
     
  3. Brian350skylark

    Brian350skylark Guzzling Gas & Haulin Ass

    Any more comments about how much i can get away with before i need to mess with the intake? Main thing is i don't want to have to take it back again and have to pay again..
     
  4. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    There is no way anyone can tell you that with any certainty. Any misalignment will be obvious when you sight down the bolt holes. You may not need to touch the intake side of the heads. Then again, you might. You can forgo the stock metal gasket if you use the TA composite gaskets. They come in various thicknesses to make up for misalignment. The thinnest one is .015 I believe. The others are .032, .047, and .062. The intake is going to sit higher on the heads. The question is, how much? How can we know that? I would have them take something off the intake side. You should be able to make up any difference by adjusting the gasket thickness. When you use composite gaskets, you have to use the metal valley pan portion to shield the PCV, and bottom of the intake. You just cut it out. TA has instruction on their website. Ask the machine shop what they suggest. I'm sure this isn't the first time they have milled heads.

    http://www.taperformance.com/PDF/Intake_Instructions.pdf
     
  5. Brian350skylark

    Brian350skylark Guzzling Gas & Haulin Ass

    The machine shop suggest taking the heads home and mocking it up, then taking the intake back to be milled. Everyone one who discussed it before with me said not to touch the intake and to shave the heads instead. And since i went and bought the ta intake i would rather take it off the heads.:eek:
     
  6. Brian350skylark

    Brian350skylark Guzzling Gas & Haulin Ass

  7. alec296

    alec296 i need another buick

    Did they say how much they took off?what was base cc vs what you have now.
     
  8. Brian350skylark

    Brian350skylark Guzzling Gas & Haulin Ass

    They havent called yet. Im still curious about the bigger gasket, if the heads were cut 40 thousands, and the gasket is 40 thousands, would that make the difference only 20 thou. Compared to stock? Is the thicker gasket going to help me out at all. Like does that mean i can get away with 50 thou. Cut?
     
  9. sean Buick 76

    sean Buick 76 Buick Nut

    Just do what they say and bring the heads home mock it up, then have a look at how it fits. If material needs to be removed to make the intake fit well then bring the HEADS back and tell them what needs to be done to the heads to make the intake well. Otherwise your new TA intake will be "married" to the engine and not fit right on a stock spec engine.

    The thicker gaskets can help in some cases however the biggest advantage the TA composite gaskets have is that they area easier to get a 100% seal compared tot he steel shim gasket.
     
  10. Brian350skylark

    Brian350skylark Guzzling Gas & Haulin Ass

    does that mean more money is gonna be spent on dis assembly also?
     
  11. sean Buick 76

    sean Buick 76 Buick Nut

    If they just machined the heads then what would they have to disassemble? The only thing at the machine shop is the heads right?
     
  12. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    I think I suggested doing this back on post 218. Have them give you the bare heads after milling them, mock them up and see how the intake fits. The heads should be bare. The valves and springs don't need to be installed for you to check the fit. When the heads are milled, they will be in a disassembled state.
     
  13. Brian350skylark

    Brian350skylark Guzzling Gas & Haulin Ass

    i gave them the valves and springs and asked to assemble it also... they have to install the bigger valves before they can get an accurate cc. Just gave them a call and he will call me after they are milled so i can mock it it up and bring them back for final assembly. The reason i was trying to get away from that is because now i have to make and extra trip there and back to measure it, But if thats what i have to do then its no a big deal. Just wanted to make sure that's what i had to do.....
     
  14. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    On 1 cylinder.
     
  15. Brian350skylark

    Brian350skylark Guzzling Gas & Haulin Ass

    Just gave them a call and he will call me after they are milled so i can mock it it up and bring them back for final assembly. The reason i was trying to get away from that is because now i have to make and extra trip there and back to measure it, But if thats what i have to do then its no a big deal. Just wanted to make sure that's what i had to do.....
     
  16. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    Unfortunately Yes. There's really no way anyone can say with any certainty that your intake will fit. It is best that you check it your self. Install the intake and sight down the bolt holes. You will see any major misalignment that way. You may be able to adjust it with a thinner gasket. Milling of the heads will make the intake sit higher on the heads.
     
  17. alec296

    alec296 i need another buick

    go the safe route go .050 .030 to bump compression(only about .3) then the .020 to make up difference for head gaskets being thicker. then get ta intake gaskets and use the old bathtub gasket as a splash pan
     
  18. Brian350skylark

    Brian350skylark Guzzling Gas & Haulin Ass

    Ok the machine shop just called, he said the heads are at 58.5cc with the over sized valves!! Hes guessing around .045 to get it down to 51 cc but could be less. The oversized valves didnt change the cc at all really. He also mentioned that the clearance between the two valves is at the minimum spec around .023 clearance. And that if i was running a larger cam it could cause some troubles..

    ---------- Post added at 02:13 PM ---------- Previous post was at 02:12 PM ----------

    something i just thought about though is i dont have the .040 gasket to mock it up with!!
     
  19. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    FEL-PRO Part # 8264PT1
     
  20. Brian350skylark

    Brian350skylark Guzzling Gas & Haulin Ass

    Thanks should have waited another few inutes to see this! I just went ahead and bought a gasket set from ta, i figure ill need it anyways.
     

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