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| == Engine Identification ==
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| {| class="wikitable"
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| |-
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| | '''Status''' || Induction and displacement '''confirmed'''. Factory LPG status '''pending Marti deluxe report'''.
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| |}
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| === Displacement and configuration ===
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| The engine is a '''Ford 429 (7.0L) V8, 4V induction, Lima-built'''. Confirmed by three independent on-vehicle sources:
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| * Air cleaner lid stamping: <code>429 4V LIMA ENGINE</code>
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| * Valve cover tag: <code>E7AE-9C485-CGG</code> / <code>7.0L HFMO7.5AGEI</code>
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| * Intake manifold casting: <code>9425-DA</code> (prefix obscured by coolant hose)
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| The <code>E7AE</code> prefix dates the valve cover to the 1987 engineering year, consistent with the October 1987 chassis build date. The engine is believed original to the chassis.
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| === Induction hardware ===
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| * Mixer: '''Impco CA425''' — 4-barrel-flange mixer, correct for a stock 4V 429.
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| * Mount: cast-style, no obvious aftermarket adapter plate. Photographed for the record.
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| * Fuel: LPG. Believed factory or ship-through conversion; see [[#Fuel system status|Fuel system status]].
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| === Intake casting ===
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| {| class="wikitable"
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| ! Field !! Value
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| | Family code || <code>9425</code> (intake manifold)
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| | Suffix || <code>DA</code> (4V revision)
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| | Prefix || Obscured — partially read, ambiguous
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| | Location || Top surface, rear of carb pad
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| | Status || 4V confirmed; prefix to be re-read at teardown
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| |}
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| === Fuel system status ===
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| '''Believed factory LPG — pending Marti deluxe confirmation.'''
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| Supporting evidence:
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| * Cast-style mixer mount with no obvious aftermarket plate
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| * DSO special order tag (<code>DSO 74 / SO 3152</code>) on firewall
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| * Factory fleet options: built-in traction sanders, front tow hooks
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| On confirmation, upgrade to fact and cite the Marti invoice line. If the invoice shows a ship-through or upfitter conversion, log as "factory-ordered LPG conversion."
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| === Blower build notes ===
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| * Single Model E vaporizer is '''insufficient''' for boosted volume — plan on '''dual Model E vaporizers, boost-referenced''', parallel coolant feed, equal-length reference lines from a common manifold source, and a lockoff sized for combined flow.
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| * Single CA425 mixer is '''insufficient''' at target power — plan on dual mixers into a common plenum with a fabricated dual-plate adapter.
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| * Compression and cam to be measured by the shop before boost selection; do not assume gasoline-spec figures.
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| * Heads to be checked for LPG-spec hardened seats at teardown.
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| === Documentation ===
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| Photos filed: air cleaner lid, valve cover tag, intake casting, mixer and mount, engine bay overall.
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| === See also === | | === See also === |