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Technical Speaking of 327's( update )

Discussion in 'The Hokey Ass Message Board' started by 48stude, Feb 8, 2018.

  1. 48stude
    Joined: Jul 31, 2004
    Posts: 830

    48stude
    Member

    Just a couple of teaser pics. My 327 being prepared for initial start up on the dyno. More to come. :) Bill
    2018-02-08 13.03.02.jpg 2018-02-08 13.03.57.jpg
     
  2. jchav62
    Joined: Jan 30, 2007
    Posts: 1,091

    jchav62
    Member

    Very cool!! Can't wait to see the numbers....
     
    48stude likes this.
  3. Neat, give us the details on the pieces, parts and modifications to the motor please. Looking forward to the results from the test.
     
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  4. chevy57dude
    Joined: Dec 10, 2007
    Posts: 3,561

    chevy57dude
    Member

    Dig it! Are the dyno headers Vette side pipes?
     
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  5. brigrat
    Joined: Nov 9, 2007
    Posts: 4,039

    brigrat
    Member
    from Wa.St.

    Most of the time Dynoing a motor is a very humbling experience......................................
     
  6. 48stude
    Joined: Jul 31, 2004
    Posts: 830

    48stude
    Member

    It's a 66 327. The heads are 462's with 2.02 & 1.60 added and some chamber massaging, screw in studs and guide plates. The heads were angle milled .090 with some acid porting. the combustion chambers are at 55cc. The block has been line honed, square decked and bored .040 . With KB flat top pistons.The rotating assembly has been balanced.
    These guys wanted me to run a tripower Comp roller cam. I'm already way deeper into this engine than I had planned
    (moneywise) so they decided on 12-236-3 Comp flat tappet hydraulic marine cam .


    I couldn't say ,but I'll ask tomorrow. This is being done at Freeman Racing in Wellsburg , WV

    You can't wait:eek:, I'm giddy:D
    After the break in period ,They will start tuning the carbs and ignition. I'll keep you guys posted. Bill
     
    Last edited: Feb 8, 2018
  7. Baumi
    Joined: Jan 28, 2003
    Posts: 1,839

    Baumi
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    Cool engine! Can´t wait to see it hit 7k!
     
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  8. sunbeam
    Joined: Oct 22, 2010
    Posts: 3,048

    sunbeam
    Member

    Flat tappet hydraulic cam 1300 to 5500 rpm range I doubt it will be seeing 7000 rpm
     
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  9. DDDenny
    Joined: Feb 6, 2015
    Posts: 7,909

    DDDenny
    Member
    from oregon

    Did someone say 327?
    Subscribed, good man.
     
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  10. DDDenny
    Joined: Feb 6, 2015
    Posts: 7,909

    DDDenny
    Member
    from oregon

    Yep, bench racing is one thing, talks cheap.
    Another thing about witnessing the engine you've spent YOUR hard earned money on is how the hair on the back of your neck will stand up when hearing it at full song.
     
    Last edited: Feb 9, 2018
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  11. bubba55
    Joined: Feb 27, 2011
    Posts: 168

    bubba55
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    SWEET - just took mine to get built and break end run
     
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  12. Roothawg
    Joined: Mar 14, 2001
    Posts: 17,353

    Roothawg
    Member

    I'm intrigued. I have a very similar motor on the stand, minus the angle milling.
     
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  13. catdad49
    Joined: Sep 25, 2005
    Posts: 1,486

    catdad49
    ALLIANCE MEMBER

    Those headers are gnarly! Video, please.
     
  14. Roothawg
    Joined: Mar 14, 2001
    Posts: 17,353

    Roothawg
    Member

    Just looked your cam specs up. Here's the one I have in mine. Pretty dang close.


    Cam Style:Hydraulic roller tappet

    Basic Operating RPM Range:1,000-5,000

    Intake Duration at 050 inch Lift:213

    Exhaust Duration at 050 inch Lift:217

    Duration at 050 inch Lift:213 int./217 exh.

    Advertised Intake Duration:266

    Advertised Exhaust Duration:270

    Advertised Duration:266 int./270 exh.

    Intake Valve Lift with Factory Rocker Arm Ratio:0.485 in.

    Exhaust Valve Lift with Factory Rocker Arm Ratio:0.495 in.

    Valve Lift with Factory Rocker Arm Ratio:0.485 int./0.495 exh.

    Lobe Separation (degrees):112
     
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  15. 48stude
    Joined: Jul 31, 2004
    Posts: 830

    48stude
    Member

    Hooker super comp headers.
    Bill
     
    chevy57dude likes this.
  16. Why build (build means spend money) a 327 and strangle it at 5000 Rpms?
     
  17. chevy57dude
    Joined: Dec 10, 2007
    Posts: 3,561

    chevy57dude
    Member

    Yes, 6500 + they sing.
     
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  18. Russco
    Joined: Nov 27, 2005
    Posts: 3,871

    Russco
    Member
    from Central IL

    It sounds like a nice motor, but I’m with the guys above. That seems like an odd can choice to me as well. With that cam and 55cc chambers decked block etc what compression ratio did it work out to be? What octane are you thinking it’s going to need? I would have took their advice and went with a nice hydraulic roller. Both for the all around performance gain and peace of mind not having to worry about lobes going flat. A nice set of Morel lifters are a bit pricey but in the grand scheme still a bargain in my opinion. Still it’s a nice piece let Us know how she does.
     
  19. That cam should pull up to 6000 plus in a 327. Comp states 5500 and thats based on 350. The dyno operator will let you know when it's done
     
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  20. winduptoy
    Joined: Feb 19, 2013
    Posts: 790

    winduptoy
    ALLIANCE MEMBER

    I'm following this and am going to see how it performs on the dyno for a learning experience.

    Sent from my XT1254 using The H.A.M.B. mobile app
     
  21. Roothawg
    Joined: Mar 14, 2001
    Posts: 17,353

    Roothawg
    Member

    I’m sure it’s for a driver. It’s not far from the famed L79 cam that everyone that hears about a 327 build says you should use. Most guys never see 7K on the street, regardless of how much we like to say that we will. I picked mine to drive, I have a race car. Well sort of....
     
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  22. 48stude
    Joined: Jul 31, 2004
    Posts: 830

    48stude
    Member

    This is where it will call home.
    2017-10-30 10.24.13.jpg
     
  23. tb33anda3rd
    Joined: Oct 8, 2010
    Posts: 12,260

    tb33anda3rd
    ALLIANCE MEMBER
    1. Connecticut HAMB'ers

    what rear gears ratio?
     
  24. Tickety Boo
    Joined: Feb 2, 2015
    Posts: 649

    Tickety Boo
    Member
    from Wisconsin

    Intake should flow good until advertised 5500 rpm, got a dyno sheet yet?

    My guess is about 325 hp at 5200 rpm :rolleyes:
     
  25. 48stude
    Joined: Jul 31, 2004
    Posts: 830

    48stude
    Member

    When I started gathering parts for this build about ten years ago, I had a 350 that belonged to my son and he said I should use, it had 4000 miles on a rebuild. I said I wanted to use early heads on it and the journey began. A fellow gave me a complete 327 so I could use the heads (461"s) The more I thought about it, the more I wanted to go with the 327.
    I have built every engine that I have run in drag cars and street rods plus some builds for my friends. My son started hanging with these guys at Freeman Racing Engines. One of these guys is tremendous on carbs and I asked him to work over my tripower when I got my car done. In the meantime ,my son had these heads(462's)that were done super stock style about 15 years ago and he wasn't going to use them because they won't support the horsepower that he wants and that I should use them on my 327( do you see how this is starting to grow it's own legs?)
    So the 327 needed bored and I wanted hardened seats in the exhaust so it went to the machine shop. The more we talked I convinced myself just to let these guys build the complete engine centered around the tripower set up and whatever mods with in reason that they wanted to do. I have to keep reminding them that this is a 22-2400 lb car that an old guy is going to drive it. They just giggle!
    I wanted to use the L79 cam,but they like the vacuum signal (for the tripower)that this cam supplies.
    No work was done today,maybe tomorrow. Bill
     
    Last edited: Feb 9, 2018
  26. 48stude
    Joined: Jul 31, 2004
    Posts: 830

    48stude
    Member

    355 with 820 x 15 rear tires Bill
     
    Last edited: Feb 9, 2018
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  27. 48stude
    Joined: Jul 31, 2004
    Posts: 830

    48stude
    Member

    I think it will be next week before the do any hard pulls on it .
    I could live with that:)
    We will know sometime next week . This is fun though, don't you all agree?:p:D
     
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  28. winduptoy
    Joined: Feb 19, 2013
    Posts: 790

    winduptoy
    ALLIANCE MEMBER

    48stude likes this.
  29. j-jock
    Joined: May 12, 2007
    Posts: 781

    j-jock
    Member

    I love it! Us old guys can have fun too, it is ok. The 327 is one of my all time favourite engines. I had one in a Corvette, and the abuse that engine took would make one wonder how it held together, such as driving through the Rockies and occasionally slowing down to 70 mph.
    Best of luck with the run on the dyno.
    I wonder why the people who advised you on the cam didn't consider the Crane lifters, to get you more vacuum at the bottom end. I am using them on a Comp 280 cam in a 454, and I love the combo. The cam behaves like a milder cam on the bottom end and hauls beautifully at the top end.
    I wouldn't think twice about having a cam with more torque that peaks out at at a lower RPM. My thinking has changed on this as I have grown older.
    Bob
     
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  30. mike bowling
    Joined: Jan 1, 2013
    Posts: 3,076

    mike bowling
    ALLIANCE MEMBER

    I'm getting ready to run a 327 in a '30 coupe and used this engine because it's kind of iconic in the Chevy family of motors. I've kind of shot myself in the foot on this at the same time being a Ford in a Ford person for a while. I got the motor for 200 bucks and a friend offered to rebuild it for short money so I figured what the hell. Good luck with yours- the first motor I heard dynoed was a 327, and I thought the owner might need a ride home.


    Sent from my iPad using H.A.M.B.
     
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