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4.6 engine info

Cadillac Tech

Seasoned Member
Joined
Oct 16, 2008
Messages
3,843
Location
Cicero,Indiana
Service Information



Engine Mechanical - 4.6L (LH2) | Specifications | Document ID: 822440
Engine Mechanical Specifications


General
  • Engine Type
V-8
  • Displacement
4.6 Liter



279 cu in
  • RPO
LH2
  • VIN
A
  • Bore
93 mm



3.661 in
  • Stroke
84 mm



3.3071 in
  • Compression Ratio
10.5:1
  • Engine Compression Test
965-1172 kPa



140-170 psi
  • Firing Order
1-2-7-3-4-5-6-8
  • Spark Plug Gap
1.270 mm
0.0500 in





Lubrication System
  • Oil Capacity - with New Dry Oil Filter
7.6 Liters



8.0 Quarts
  • Oil Capacity - without Oil Filter Change
7.1 Liters



7.5 Quarts
  • Oil Pressure - Minimum @ Idle
35 kPa



5 psi
  • Oil Pressure - Minimum @ 2,000 RPM
250 kPa
35 psi
 

carterchapman

Seasoned Member
Joined
Jun 5, 2009
Messages
115
Location
Atlanta
My XLR/V(s)
2005 Crimson Pearl XLR
Thanks - that answers my question about my 20 PSI oil pressure at idle, hot engine.
 

Cadiblk

Seasoned Member
Joined
Dec 22, 2009
Messages
191
Location
Nevada
My XLR/V(s)
2005 Black Raven XLR
Thank you for the information. Has anyone looked into the performance benefits (if any) of having the heads ported / polished, changing a cam bore stroke, or any other top end work? D3 has limited products for the standard XLR and I was interested in trying to squeeze out some extra horsies!
 

elkyman70

New Member
Joined
Jun 16, 2018
Messages
1
Location
Florida
My XLR/V(s)
2005 XLR
Am not sure but is the cylinder numbering start at 1 on the passenger side rear ond of the engine compartment with odds in the back and evens in the front with 2 also starting the passenger side?
 

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