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Thread: 1966 Chevrolet Corvair Corv8

  1. #26
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    Default Re: 1966 Chevrolet Corvair Corv8

    ^--Thanks!
    This car is very easy to work on now that I've had too, you can sit down on the floorboard and sub frame and wrench away on the engine right in front of you. Unless your messing with exhaust headers that have not been touched in 30+ years and bolts are breaking off, grrr.
    Adam K
    '65 Corvair Corsa new DD
    '66 Buick Riviera GS
    '66 Corvair Corsa Corv8
    '84 Buick Regal 3.8 Turbo
    '06 Avalanche Z71 4X4

  2. #27
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    Default Re: 1966 Chevrolet Corvair Corv8

    I have some awesome corvair pics from the doo wop for you. couple pretty cool ones there. one was a v8 conversion convertible. ... almost makes me wish i was shorter.
    2001 Corvette - Heads, Cam, Intake, Full exhaust, Hotchkiss Swaybars, z06 brake ducts, SS brake pistons & Lines Etc. Lowered & Murdered out.
    2000 Trans AM WS6 - Forged Motor APS Twin Turbo Kit. Full Suspension & C5 brakes.... in pieces currently
    1998 Trans AM STS Turbo
    1997 Jeep Cherokee - when you just gotta go places other things won't take you.
    1995 Mercury Grand Marquis - ugly but comfortable

  3. #28
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    Default Re: 1966 Chevrolet Corvair Corv8

    Sweet thanks Steve. I've seen the black V8 convert before it is very nice. There are only 3 V8 Vairs in our state including mine.
    only update right now:
    I have to buy new Stahl adapters in the future for the headers to be perfectly sealed up. These are old and warped but I have it repaired enough to get by 'til spring.
    Adam K
    '65 Corvair Corsa new DD
    '66 Buick Riviera GS
    '66 Corvair Corsa Corv8
    '84 Buick Regal 3.8 Turbo
    '06 Avalanche Z71 4X4

  4. #29
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    Default Re: 1966 Chevrolet Corvair Corv8

    A couple more pics of the DZ302 while I was upgrading the ignition and after the temporary repair of the exhaust adapter plate. Has 1 3/4" primary Stahl headers that must use a Stahl adapter on the heads. I bought new 409 stainless mufflers that are made by Rush and are Magnaflow 11236 copies, they will be in tomorrow.



    Adam K
    '65 Corvair Corsa new DD
    '66 Buick Riviera GS
    '66 Corvair Corsa Corv8
    '84 Buick Regal 3.8 Turbo
    '06 Avalanche Z71 4X4

  5. #30
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    Default Re: 1966 Chevrolet Corvair Corv8

    Nice!!
    just a slow lt1

  6. #31
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    Default Re: 1966 Chevrolet Corvair Corv8

    ^--Thanks Matt
    Well with time and money wearing thin or out at it were I drove the Corvair to the dyno today with the few upgrades and critcal parts I could provide for a baseline on the Mustang dyno.
    220whp@220wtq with 2-3hp variation within three runs. On the trip home the car just died completely coasting down a hill near the end of PA166 and refused to start and was ignition related. Left the car then returned a few hours later and swapped out the ignition coil fired it up and drove back home.
    Adam K
    '65 Corvair Corsa new DD
    '66 Buick Riviera GS
    '66 Corvair Corsa Corv8
    '84 Buick Regal 3.8 Turbo
    '06 Avalanche Z71 4X4

  7. #32
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    Mar 2013
    Location
    Newton, WV
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    185

    Default Re: 1966 Chevrolet Corvair Corv8

    Nice looking car!

  8. #33
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    Default Re: 1966 Chevrolet Corvair Corv8

    Somewhere, someone out there (myself included) would kill for that DZ.
    - I break things -
    '70 Mach-1 "money pit"

  9. #34
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    Default Re: 1966 Chevrolet Corvair Corv8

    Thanks guys, Had a lot of fun with it yesterday. Who knows if the future I may go a different route and remove the DZ but for now It's great and I'll beat on it.
    Adam K
    '65 Corvair Corsa new DD
    '66 Buick Riviera GS
    '66 Corvair Corsa Corv8
    '84 Buick Regal 3.8 Turbo
    '06 Avalanche Z71 4X4

  10. #35
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    Default Re: 1966 Chevrolet Corvair Corv8

    Quote Originally Posted by lowtecoldschool View Post
    Thanks guys, Had a lot of fun with it yesterday. Who knows if the future I may go a different route and remove the DZ but for now It's great and I'll beat on it.
    If you ever decide to sell the DZ look me up.
    - I break things -
    '70 Mach-1 "money pit"

  11. #36
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    Default Re: 1966 Chevrolet Corvair Corv8

    I forgot earlier but while at Rodeheavers I met some guys from PA that knew the Corvair and gave me a little more insight about it. I can't remember the guys name but they said he owned and operated a shop called Advancedauto and engines or just Advanced engines somewhere in PA that built NASCAR engines and that he had a built 283 in it and it sat inside a wharehouse for many many years. These guys also said the old man I bought it from did not own it for 8 years as he claimed but only a year and half. So after all of that and the dyno session I went to scruntize the engine because all SBC's look the same to me. Confirmed the engine is definitely a 302 Chevy, built using a '72 4 bolt main Vette 350ci block and all of the 302ci rotating assembly and induction pieces. Last week I swapped out the StewartWarner tach with my old reliable Eqques tach and found out Tim never even got this engine into the powerband. According to my dyno gragh which I will upload soon the max rpm shown was 5780 rpms. Now after drving the Corvair with a good tach and ign coil, this little engine revs and revs out to 7500rpms and Im shifting at 7000rpms now. This engine sounds awesome revved out.
    Last edited by lowtecoldschool; 11-20-2013 at 08:25 PM.
    Adam K
    '65 Corvair Corsa new DD
    '66 Buick Riviera GS
    '66 Corvair Corsa Corv8
    '84 Buick Regal 3.8 Turbo
    '06 Avalanche Z71 4X4

  12. #37
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    Default Re: 1966 Chevrolet Corvair Corv8


    Adam K
    '65 Corvair Corsa new DD
    '66 Buick Riviera GS
    '66 Corvair Corsa Corv8
    '84 Buick Regal 3.8 Turbo
    '06 Avalanche Z71 4X4

  13. #38
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    Default Re: 1966 Chevrolet Corvair Corv8

    I thought the power seemed very low.
    The 302 with a cam swap and xram intake made 400hp.
    They are top end engines meant to rev. They are pretty gutless down low.

    If it's in a later 350 block then you have either a late 68 or 69 crank. The 67 and most of 68 were small journal cranks. Technically, a small journal 283 crank inside of a 327 block.

    There's not much that I don't know about these engines.
    - I break things -
    '70 Mach-1 "money pit"

  14. #39
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    Default Re: 1966 Chevrolet Corvair Corv8

    Your right its exactly like that, not much torque down low and the power is concentrated in upper rpms. Yep large journal crank, I ID'd it by the crank flange and checking the stroke through the spark plug hole. While doing that I noticed it has flat top pistons so the compression is not 10 or 11:1 like I was told but more like 9:1(updated and wrong) and I see no roller cam but a flat tappet instead.
    Last edited by lowtecoldschool; 04-13-2014 at 12:22 AM.
    Adam K
    '65 Corvair Corsa new DD
    '66 Buick Riviera GS
    '66 Corvair Corsa Corv8
    '84 Buick Regal 3.8 Turbo
    '06 Avalanche Z71 4X4

  15. #40
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    Default Re: 1966 Chevrolet Corvair Corv8

    sucks you didn't even get a real base line number
    just a slow lt1

  16. #41
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    Default Re: 1966 Chevrolet Corvair Corv8

    Quote Originally Posted by maromatt View Post
    sucks you didn't even get a real base line number
    Meh lol yeah it's ok though because it will go back on that dyno later on and will be ran to 8000+ rpm's next time. Still my fairly accurate butt dyno tells me this little revving combo is in the 380-400whp range.

    But for now c'mon Disc brakes and alternator upgrade so I can stop with authority and ditch the external voltage regulator. Ohh yeah and new Stahl header adapters.
    Adam K
    '65 Corvair Corsa new DD
    '66 Buick Riviera GS
    '66 Corvair Corsa Corv8
    '84 Buick Regal 3.8 Turbo
    '06 Avalanche Z71 4X4

  17. #42
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    Default Re: 1966 Chevrolet Corvair Corv8

    Progress underway finally. And this cars finish is dirty.
    Adam K
    '65 Corvair Corsa new DD
    '66 Buick Riviera GS
    '66 Corvair Corsa Corv8
    '84 Buick Regal 3.8 Turbo
    '06 Avalanche Z71 4X4

  18. #43
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    Default Re: 1966 Chevrolet Corvair Corv8

    Plan on completing the top end tear down tonight. Freshing up the top end and new HP thinner head gaskets and install new header adapters and stainless header stud kit. Never mind the fewTurbo Buick parts in the pic, that's the next project.
    Adam K
    '65 Corvair Corsa new DD
    '66 Buick Riviera GS
    '66 Corvair Corsa Corv8
    '84 Buick Regal 3.8 Turbo
    '06 Avalanche Z71 4X4

  19. #44
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    Default Re: 1966 Chevrolet Corvair Corv8

    Love this car! Glad to see some progress on it
    2012 ZL1

    Roto fab cai
    10% lower pulley (10psi)
    catless
    canned tune
    11.04@ 128. on Hoosier dr's and skinnies
    1100 DA @ PRP

  20. #45
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    Default Re: 1966 Chevrolet Corvair Corv8

    Me too, lol. Ok I'll was wrong the old man was right. Forged popup pistons, 492 casting fuelie heads I see bowl work done and port matching with nice valve job. Copper shim head gaskets that you can anneal and reuse but I'm not this time. It has a mechanical (solid) flat lifter cam in it I didn't degree it but I'm sure it's right.
    Last edited by lowtecoldschool; 04-13-2014 at 12:19 AM. Reason: add correct info
    Adam K
    '65 Corvair Corsa new DD
    '66 Buick Riviera GS
    '66 Corvair Corsa Corv8
    '84 Buick Regal 3.8 Turbo
    '06 Avalanche Z71 4X4

  21. #46
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    Default Re: 1966 Chevrolet Corvair Corv8

    Didn't look too terrible inside there.



    03' SSS, 98' T/A,84' Monte Carlo SS,08' Civic, 65' Malibu SS
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  22. #47
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    Default Re: 1966 Chevrolet Corvair Corv8

    ^--At first... but the dangers and would-be disasters are in the fine details. Didn't get them wet magged yet but quite sure one is cracked a lot, And with that I believe I'm going to have to get rid of the 42 year old iron heads and replace them with aluminum counterparts with the quickness. Dang this is about to cut into my Turbo Buick budget.
    Adam K
    '65 Corvair Corsa new DD
    '66 Buick Riviera GS
    '66 Corvair Corsa Corv8
    '84 Buick Regal 3.8 Turbo
    '06 Avalanche Z71 4X4

  23. #48
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    Default Re: 1966 Chevrolet Corvair Corv8

    And....the deck was stacked lowering compression even more. But not this time when I put it all back together. Screw those iron heads! New upgrade right out of the box: Dart SHP aluminum heads, 200cc intake port, 75cc exhaust port 64cc chamber, 2.02/1.60 valves.
    Adam K
    '65 Corvair Corsa new DD
    '66 Buick Riviera GS
    '66 Corvair Corsa Corv8
    '84 Buick Regal 3.8 Turbo
    '06 Avalanche Z71 4X4

  24. #49
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    Default Re: 1966 Chevrolet Corvair Corv8

    very nice.

  25. #50
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    Default Re: 1966 Chevrolet Corvair Corv8

    ^--yeah!
    Alright so close now. An unplanned but welcomed complete induction upgrade helps bring 40+ years of technology to the little chevy.
    Swapped out Dart's valve spring pack for mine with titanium retainers, Added Weiand team G intake. I'm certain this is still the old Duntov "30-30" solid camshaft after recording the cold lash clearance.
    Adam K
    '65 Corvair Corsa new DD
    '66 Buick Riviera GS
    '66 Corvair Corsa Corv8
    '84 Buick Regal 3.8 Turbo
    '06 Avalanche Z71 4X4

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