Bus Specs Start: Difference between revisions

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* VIN: 1FDXB70K4JVA01204
* VIN: 1FDXB70K4JVA01204
** 1988 Ford B-series chassis cab, 429, built at KTP.
** 1988 Ford B-series chassis cab, 429, built at KTP.
== Engine Identification ==
{{Notice|text=Status: induction and displacement '''confirmed'''. Factory LPG status '''pending Marti deluxe report'''.}}
=== Displacement and configuration ===
The engine is a '''Ford 429 (7.0L) V8, 4V induction, Lima-built'''. Confirmed by three independent on-vehicle sources:
* Air cleaner lid stamping: {{code|429 4V LIMA ENGINE}}
* Valve cover tag: {{code|E7AE-9C485-CGG}} / {{code|7.0L HFMO7.5AGEI}}
* Intake manifold casting: {{code|9425-DA}} (prefix obscured by coolant hose)
The {{code|E7AE}} 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.
=== Induction hardware ===
* Mixer: '''Impco CA425''' — 4-barrel-flange mixer, correct for a stock 4V 429.
* Mount: cast-style, no obvious aftermarket adapter plate. Photographed for the record.
* Fuel: LPG. Believed factory or ship-through conversion; see [[#Fuel system status|Fuel system status]].
=== Intake casting ===
{| class="wikitable"
|-
! Field !! Value
|-
| Family code || {{code|9425}} (intake manifold)
|-
| Suffix || {{code|DA}} (4V revision)
|-
| Prefix || Obscured — partially read, ambiguous
|-
| Location || Top surface, rear of carb pad
|-
| Status || 4V confirmed; prefix to be re-read at teardown
|}
=== Fuel system status ===
'''Believed factory LPG — pending Marti deluxe confirmation.'''
Supporting evidence:
* Cast-style mixer mount with no obvious aftermarket plate
* DSO special order tag ({{code|DSO 74 / SO 3152}}) on firewall
* Factory fleet options: built-in traction sanders, front tow hooks
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."
=== Blower build notes ===
* 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.
* Single CA425 mixer is '''insufficient''' at target power — plan on dual mixers into a common plenum with a fabricated dual-plate adapter.
* Compression and cam to be measured by the shop before boost selection; do not assume gasoline-spec figures.
* Heads to be checked for LPG-spec hardened seats at teardown.
=== Documentation ===
Photos filed: air cleaner lid, valve cover tag, intake casting, mixer and mount, engine bay overall.
=== See also ===
* [[Chassis Documentation]]
* [[Fuel System]]

Revision as of 15:38, 29 October 2026

Original Bus Specifications

TAG #1

  • MFD. BY CARPENTER BODY WORKS, INC. : 3-88
  • INC. VEH. MFD. BY: FORD 10-87
  • G.V.W.R. : 28000 LBS.
  • G.A.W.R. FRONT : 9000 with 265/75Rx225G tires 22.5x7.5 rims, 120 psi cold SINGLE
  • G.A.W.R. REAR : 19220 with 265/75Rx225G tires 22.5x7.5 rims, 110 psi cold DUAL
  • VIN: 1FDXB70K4JVA01204
    • 1988 Ford B-series chassis cab, 429, built at KTP.


Engine Identification

Template:Notice

Displacement and configuration

The engine is a Ford 429 (7.0L) V8, 4V induction, Lima-built. Confirmed by three independent on-vehicle sources:

The Template: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.

Induction hardware

  • Mixer: Impco CA425 — 4-barrel-flange mixer, correct for a stock 4V 429.
  • Mount: cast-style, no obvious aftermarket adapter plate. Photographed for the record.
  • Fuel: LPG. Believed factory or ship-through conversion; see Fuel system status.

Intake casting

Field Value
Family code Template:Code (intake manifold)
Suffix Template:Code (4V revision)
Prefix Obscured — partially read, ambiguous
Location Top surface, rear of carb pad
Status 4V confirmed; prefix to be re-read at teardown

Fuel system status

Believed factory LPG — pending Marti deluxe confirmation.

Supporting evidence:

  • Cast-style mixer mount with no obvious aftermarket plate
  • DSO special order tag (Template:Code) on firewall
  • Factory fleet options: built-in traction sanders, front tow hooks

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."

Blower build notes

  • 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.
  • Single CA425 mixer is insufficient at target power — plan on dual mixers into a common plenum with a fabricated dual-plate adapter.
  • Compression and cam to be measured by the shop before boost selection; do not assume gasoline-spec figures.
  • Heads to be checked for LPG-spec hardened seats at teardown.

Documentation

Photos filed: air cleaner lid, valve cover tag, intake casting, mixer and mount, engine bay overall.

See also

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