$projecthp
  • The Mystery engine.....Torn apart
  • The Mystery engine.....Torn apart
  • The Mystery engine.....Torn apart
  • The Mystery engine.....Torn apart

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  1. #1
    Motor head!!!! vigman's Avatar
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    Default The Mystery engine.....Torn apart

    Well I tore her apart today and found the following.. She was clean and recently rebuilt I'm guessing about less tham 5K ago ( running miles )

    Any additional insight on parts ID's would be helpful..here we go...

    Block casting
    3858174
    64-67 Camaro
    327 small journal
    2 bolt

    Crank
    Mains 2.29
    Rod 1.98
    4577 Forged
    Con Rods GM markings but ???

    30 on top of piston (I'm assuming 30 over)
    Pistons single relief for valves, flat top, Looks cast an SJ in an oval symbol on inside of piston
    Pins pressed into rod
    Con rod nuts have little slits 1/2 way down

    Heads
    Double Hump
    64 cc
    3782461
    No acc bolt holes in head
    Big straight plugs

    Drivers side
    175 ( Jan 7th 1965)
    Passinger?s side
    1275 ( Dec 7th 1965)
    Application
    62-66 Camaro/Corvette/Truck/Chevy II

    Valve size
    2.02 Face
    1.60 Face
    No overlap ( so I?m guessing next size down..it?s the seat area measurement right?)
    Small press stud ( aircraft lockdown nuts)
    Double spring

    Cam unknown ( looks like big lift..have to measure need bits from work for that)
    On back of stick c400 p
    C-400-P specs as follows:
    > Duration @ .050: 222 Int / 222 Exh
    > Advertised Duration: 290 Int / 290 Exh
    > Cam Lift: .298 Int / .298 Exh
    > Gross Valve Lift: .447 Int / .447 Exh
    > Center Line C/L: 110 Int / 118 Exh


    Other cam markings cast CWC C3 EP1
    GM timing gear Double gear chain drive
    Number on gear face 3735412
    Crank gear had 3 positions It was set @ 0

    Edlebrock TM ?1 intake
    Spacer/adaptor plate for carter

    Carter Carb AFB competetion series
    9605S-2794

    Stock distrib

    Had orig Potatoe masher oil seperator in back of lifter valley.

    At this point I could just have everything hot tanked & checked re painted & resealed and off I go.

    the block has allen screws in the cam lube points ( I'm guessing top end oil restriction)

    The front of the timing cover has 2 HUGH plumbing type caps in the block..it looks factory.


    Mike

  2. #2
    75SHARK
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    Default

    Well Vig, looks like you have an overbore 327. What I found on your heads is they were issued '64-'66 from a 327 & 62 cc chambers. Did you notice any port or bowl work done?
    Was trying to figure your cam. Where is the # you found located? Are you refering to # being cast into cam? Usually behind cam timing gear is I.D. or P/N stamped.
    Feels good knowing what you have now, doesn't it?! I know all too many of my cars have had 'mystery' engines. Sometimes it can be a bit-o-fun tracing things down! -Dave

  3. #3
    wolf_walker
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    Default

    http://www.mortec.com/

    Thise guys have lots of casting numbers and such listed.

  4. #4
    Registered User 69MyWay's Avatar
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    Default

    Wish I could give you some more insight.

    However, it sounds like you are on the right track. It will be very important to figure out what kind of cam you are playing with. If high lift, get the heads retrofitted with screw in studs to keep that thing alive on high revs. Just because it has double springs does not mean it is at the correct pressure for your cam specs.

    You are at least 75% of the way to having a nice street small block. A 327 can make some nice hsp and push you down the road like a champ. It would be great if you could match it all up all the way down the drivetrain so that you can spin it nice and tight to get the most out of that shorter stroke.

  5. #5
    Motor head!!!! vigman's Avatar
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    Default Update 3/29

    So the block is in getting
    hot tanked
    new cam bearings
    new freeze plugs
    and lightly re honed
    the motor mount boss is getting a tiny crack rewelded & re tapped and a clean up cut on the top of the block.. super minor pitting on the top.. but what the hell while I'm here ...do it right!

    Crank is getting magna fluxed & polished.

    All the sheet metal is getting tanked & blasted,and the intake ( Edlebrock ) is getting blasted.

    New stainless valves arrived today( 2.02 & 1.60) with the LT-1 springs.The Crane roller tip rockers are tommorow. Still making up my mind about new main studs & head bolts.

    And not to mention all the fun new gaskets WOOO HOOO! ( Fel Pro)

    I just couldn't go with the welded head
    ( for just plain chicken reasons )
    They did a TREMENDOUS job Plasma welding with nickle and short of the slightly shinier finish it looks factory!

    But the good news......
    One of the counter guys at my local autoparts store had a pair of 461 heads.. which he sold to me for $50.00 with the orig tin rocker covers..... So I'm having one of em reworked so I'll have 100% clean GM factory heads. ( ok call me crazy)..and yeah I know I could of bought the edlebrock aluminum at this point! But I want an orig 65 engine.

    So that's were things are for now.....
    ( OK not as impressive as Ken's or Chris's but fun for me!)

    Mike

  6. #6
    Registered User 69MyWay's Avatar
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    Default

    I don't care if it is a go cart. I am always impressed with anybody that takes on these kind of projects.

    Sounds like you are getting there.

  7. #7
    Motor head!!!! vigman's Avatar
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    Default Well were 2 for 2

    The springs were correct the valves we not!

    The valves only have the single cutout for the keepers not the 2nd one for the valve guide seals DOH!

    So back to the drawing board we go.


    Now Crank question...

    The rod journals on a small journal 327 crank should be what dimension?????

    I see everything from 2.100 to 2.0 for standard size and for a ROD .1 is a LOT of slop

    So what is it? And ( the bonus question)

    HOW do you decode the bearing number

    The ones that came out of the engine
    One side is stamped CLEVITE 77
    The other is 11 89(assuming the mfgr date)
    then C 745 P (which measure an ID 1.9750)
    Which makes sence for my 2.0000 rod journal .03 clearance

    I bought STOCK"standard" bearings
    One side is stamped CLEVITE 77
    The other is 11 01
    then CB 663 P
    Then STD
    (which measure an ID 2.0745)

    Something is Fishy here! this is a .10 diff
    Aren't bearing sizes .010/.020 etc???

    HHAAALLLPPPPP!

    Mike

  8. #8
    Motor head!!!! vigman's Avatar
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    Default 327 SMALL Journal crank spec's

    327 Crank specs
    Rod Journal ( stock ) 1.999 to 2.000
    Bearing Clearance .0007 to.0028

    Rear Main Journal
    2.297 to 2.299
    Bearing clearance
    .0001 to .0006

    All others
    Bearing clearance
    .0008 to .0024

    End Play
    .003 to.01

    So looks like I got 350 rod & main bearings

    ( Wait till I get my mitts on those guys!!!!!)

    Mike

  9. #9
    Member patsnitrovette's Avatar
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    Default

    yes the cb663 is a large journal 350 rod bearing..they gave you the wrong one.sounds like your gone to have a nice motor there..i always liked 327,s had one in my 76 .

  10. #10
    Motor head!!!! vigman's Avatar
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    Default So today!

    We were BAD

    We spent money

    New Valves/Springs/Hats/keepers/cam button/Screw in studs/ARP head & Main bolts

    I recieved from a bud some Crane roller rockers.. in weird shape ( read post )

    We de carboned the pistons( now @ machine shop) & cleaned ALL the funky hardware!

    Kids make good helpers!

    Mike

  11. #11
    Motor head!!!! vigman's Avatar
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    Default A pix of the head weld

    What do ya think?

  12. #12
    Motor head!!!! vigman's Avatar
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    Default Found the Cam info

    Melling

    And you thought they just pumped oil

    C-400-P specs as follows:
    > Duration @ .050: 222 Int / 222 Exh
    > Advertised Duration: 290 Int / 290 Exh
    > Cam Lift: .298 Int / .298 Exh
    > Gross Valve Lift: .447 Int / .447 Exh
    > Center Line C/L: 110 Int / 118 Exh

    A little closer everyday!

    Mike

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