Used C3OE Heads

  • Here is an Ebay auction for a pair of used C3OE heads by Ebay member "mep1170" with a starting bid of $1,999.00 and a Buy-It-Now of $2,999.00:


    Rare Shelby American-Hipo 289 Heads

    These are not your regular Hipo heads, but be are definitely rare & may be considered historical.

    C3OE heads ported & stamped by Valley Head Service in Canoga, California.

    From my understanding, this was the outfit that did the port work on (at least the early) Shelby American racing Cobras.

    The heads have, besides the obvious port work, beautiful chamber work.

    New Ferrea 6000 series 1.90 & 1.60 valves.

    New Comp Cams Springs-# 987-16 (121 #’s @ 1.800” / 343 #’s @ 1.200”, 370 lbs/inch) For solid flat tappet or mild solid roller use.

    Comp Cams chromoly retainers & machined keepers & of course new valve seals.

    Professional three angle valve job, new stainless valves. New springs (for mild roller or solid cam use) & retainers.

    These were assembled in a motor that was never fired - the matching #’s short block was used for a correct restoration - thus some of the pictures show them painted- they are post removal from the assembled engine.

    One of the heads has a broken boss in the interior (see pictures)- for one of the off center intake bolt-this is fairly common on SBF - happens when bolt installed is of the wrong length and/or over tightening (the factory recommended torque on the intake is only 12 to 15 ft/lbs). Not visible & non consequential as there is enough good thread left in the boss to handle proper torquing.

    Heads are clean & ready to assemble- will be wrapped & protected to keep them that way.

    Great for the restoration/racing of that special 289 Cobra/Fairlane/Falcon/Galaxie, etc


    https://www.ebay.com/itm/RARE-…2d5d8d:g:ST0AAOSwDpteznGw


    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

  • I would normally only list heads that could have been Mustang assembly line era pieces. These heads were slightly before the Mustang era but were available from Shelby during the Mustang era. Valley Head Service was Shelbys first vendor for modified heads. I was inside that Valley Head Service shop back at that time it was in a chicken coop on Sherman Way in Reseda building heads for a chicken farmer in Texas. Larry Ofria started Valley Head Service at that time and has relocated twice since then and I have worked in both of his shops. Valley Head Service is still around doing the same stuff but in a much larger shop. I just spoke with Larry in the last few months.


    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

  • This pair of used C3OE heads received no bids by June 11, 2020 and therefore did NOT sell.


    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

  • This pair of used C3OE heads is back on Ebay again with no changes:


    https://www.ebay.com/itm/18432…vxp=mtr&item=184325571681


    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

  • This pair of used C3OE heads received no bids by June 18, 2020 and therefore did NOT sell.


    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

  • This pair of used C3OE heads is back on Ebay again with no changes:


    https://www.ebay.com/itm/18433…vxp=mtr&item=184333611751


    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

  • This pair of used C3OE heads received no bids by June 25, 2020 and therefore did NOT sell.



    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

  • Looks like their decks have been milled a lot.

    Good catch, Dan. You are definitely correct on that. Even the 289 casting is a little thin. Since the time of these head modifications, it was learned that angle milling did an excellent job of decreasing the combustion chamber size without overmilling the heads. You would still lose the thumbprint, though.


    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

  • Some owners had their block decks milled. Some used Ford steel shim head gaskets. Some had the head decks milled. Some used custom “pop up” pistons. Some folks did these things in some kind of combination in the quest for more power.



    In Shelby American’s exhaustive testing and development they found that as static compression ratios (SCR) were raised above 11.6:1 in 289 engines durability suffered. They also preferred flat top pistons. Shelby developed Cobras and GT40s to be able to race 289 engines 35 hours or more between overhauls. That was good enough for world championships and Le Mans. People forget that actual SCRs can go up as the engine is used because of deposits on valves, piston tops, and combustion chambers. That was truer with the highly leaded fuels of the 1960s than it is today. People often don’t take into account actual cylinder combustion pressures that can vary a lot depending on all kinds of parts design factors that affect volumetric efficiency from air cleaner to exhaust tail pipe(s) plus ignition timing.



    What I don’t like is milled block decks. Ford only left a small amount of “deck height” for quench. It doesn’t take much milling to get it all with O.E. configuration pistons. The engine in our red car had all the stock deck height removed by milling in the 1960s. One of the reasons we had Arias Pistons make custom pistons for this engine was we kept the cylinder bores at 0.003” (three thousandths) over size and a another reason was the block decks had been milled so much.



    Potential buyers of the cylinder head assemblies offered should want to know what the combustion chamber sizes are. With that information they could determine what would be required to get whatever target SCR they have in mind.

  • Excellent observations, Dan.


    -Fred-

    65 Koupe early San Jose Phoenician Yellow 4 speed
    66 GT Koupe Dearborn Blue 4 speed
    66 KGT San Jose fastback pony interior Silver Frost 4 speed
    64 Falcon sedan delivery 289 4 speed
    65 Ranchero 289 4 speed
    66 Corvette roadster 427/425 4 speed

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