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  1. #1
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    Default Another question: Buick 300 and 340 V-8s

    Are they an outgrowth of the 215? Or were they a new series that was engineered to use the 215's intake and heads?
    Diego
    1970 Oldsmobile 4-4-2 W-30 Ragtop
    Documented Dover Downs pace car

  2. #2
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    Default Re: Another question: Buick 300 and 340 V-8s

    Quote Originally Posted by 442w30 View Post
    Are they an outgrowth of the 215?
    Yes. The 215 became too costly to manufacture. GM had a high rejection rate due to the way they were casting them.
    Jason Cook
    BPG #1675
    "Expert in obsolete technology"

    1968 Riviera GS- some assembly required
    1969 Riviera GS- my first car
    1970 Stage 1 4 speed Aquamist
    1971 GS 455 11.93@113.36
    1987 Grand National
    1970 Stellar Industries vintage go kart

    When tyranny becomes law, rebellion becomes duty

  3. #3
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    Default Re: Another question: Buick 300 and 340 V-8s

    So the 300 and 340 were a bored and stroked 215?
    Diego
    1970 Oldsmobile 4-4-2 W-30 Ragtop
    Documented Dover Downs pace car

  4. #4
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    Mar 2004
    Location
    Edmonton Alberta
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    13,546

    Default Re: Another question: Buick 300 and 340 V-8s

    The SBB has been a long story that is still on-going since we are still driving and racing them today. You will read all about the history in the book I am writing about SBB performance.

    Here, this is a start:

    http://www.roverholic.com/rover-all-...lhead-131.html
    __________________________________________________ ________________________________________
    My book called Small Block Buick Performance covering the V6, 215, 300, 340, and Buick 350 engines will be released soon.

    http://www.v8buick.com/forumdisplay....rformance-Book
    __________________________________________________ __________________________________________________ _________________________________
    1970 Buick Skylark 350 street/strip with 6 point cage: Custom tube headers feed Twin T3/T4 Turbochargers, Holley 650, sheet metal single plane intake, heavily ported iron heads with oversized valves, mild Poston 114 camshaft (2800-6000 RPM), Diamond forged pistons on Hershe forged rods, balanced, ARP everywhere, dual 3" exhaust, Paddle shifted 4L80E 4 speed overdrive, Moser 12 bolt with 3.42 gear.

  5. #5
    Join Date
    Sep 2004
    Location
    Helena, Salmon, Reno
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    3,055

    Default Re: Another question: Buick 300 and 340 V-8s

    . Crankshafts are interchangeable minus some minor changes. Front covers, camshafts, timing gears, distributors, cylinder heads (bore spacing) are all interchangeable.

    Not sure on rockers but most of the differences such as bellhousing pattern are evolutionary, not clean-slate design differences.

    Also, the V-6 is an outgrowth from this program with some shared or interchangeable parts; particularly front-cover, timing gears.

    The 350 is also an evolutionary change, resmbling the 455 more than the 300, but still there are similarities that transfer back to the 215-->300-->340 evolution.
    Adam

    No trees were killed in the sending of this message, but billions of electrons were terribly inconvenienced.

 

 

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