: Northstar Engines and System Technical Discussion



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  1. 4T80E Shift Kits?
  2. Northstar pre oil change cleaners / additives
  3. 4T80E Transmission will not engage (in any gear front or back)
  4. 2000 Eldorado Engine Noise
  5. Keeping 1st gear with T/C off on the 96-99 Northstars - Tuning update
  6. water pump removal
  7. Rear main seal question...
  8. NorthStar Top End Teardown in Car - Cylinder Head Insert Repair
  9. 1997 Northstar insert and timing help
  10. Check Engine Light won't go off - 2003 DTS
  11. Cylinder Compression
  12. P0300 - Misfires on cyls 1 and 2
  13. What's this gasket?
  14. torx size for studs studs
  15. 2000 Deville Now Burning A Quart Every 300 Miles Now What? 115k
  16. Odd possible HG failure - 2003 STS
  17. Check Coolant Level
  18. 1997 Deville Possible topend, maybe full rebuild!
  19. 2001 SLS Ignition Coil Packs
  20. Possible Head Gasket 2001 Deville
  21. 01 Overheating; suspect coolant flow Please advise.
  22. 2005 Deville Head Gasket
  23. Northstar thermostat housing leaks, possible overheating
  24. 2009 DTS 100,000 miles - burning oil smell
  25. Northstar timing chain tensioners
  26. 2000 DeVille - high temps, possible head gasket leak
  27. Hello all, I have an intake question
  28. valve roller rockers-2001
  29. Northstar block question
  30. Snakes
  31. Freeze Plugs
  32. Oil filer adapter o rings and oil level tube o ring
  33. LD8 vs LH2/LC3 Exhaust Flange
  34. Another Overheating question
  35. Cleaning Carbon Deposits on pistons/rings ??????
  36. 06 Luceren Northstar V8 overheating and heater core coolant leakage?
  37. P0140 after New Sensor
  38. freeze spray for guide pin removal
  39. Swap question
  40. Swapping a Y for a 9-2001
  41. Engines - 2001 SLS with cracked block
  42. 2000 STS wont start
  43. I cant get the front valve cover off a 1999 Seville Northstar
  44. trouble code P0175
  45. 2000 deville won't start due to gears
  46. 06 SRX N* VVT Part identification
  47. Building a 1996 Northstar base Deville engine
  48. 2005 Northstar Lifters Ticking
  49. Recommended spark plug for 2001 Northstar
  50. Rad Fan Diagnosis - 1997 SLS
  51. Deville cooling fans problem
  52. Best gasket/bolt kit for 1999 Northstar head job
  53. Cadillac Deville Engine swap 95 in a 98
  54. 99 Deville 4.6 Northstar - left intake camshaft replace
  55. 2000 STS with P0300 #4 - misfire - valvetrain damage
  56. 2002 Deville - P 0741 alone, long trip ?
  57. Head Gasket dilemma -- 1999 Deville
  58. 02 deville overheated and now starts rough for about 10-20 seconds
  59. Pros and Cons Of A Northstar
  60. Chevron Techron Usage
  61. 2002 STS Head Gasket repair... and more?
  62. 2000 Deville - Coolant leak from overflow tube
  63. Cassette Bolts
  64. Help, car won't start!
  65. 4T80E Fluid level
  66. Just curious ...
  67. 95 Vin9 transmission
  68. This sounds BAD... 2004 Deville Northstar with ticks and rattles
  69. 1998 STS some oil use, drips of oil every couple days & suspect head gasket
  70. Fuse issues - 1996 SLS injector circuits
  71. Oil leak at head.
  72. 94 Concours with First Generation Northstar
  73. Motor Rebuild Problem
  74. power steering
  75. 1999 Deville - P 0404 but I do not think its the EGR Valve
  76. New to me 08' DTS service question.
  77. 2011 Northstar HG
  78. Need a recommended Northstar rebuilder for purchase of new engine for my 01 deville.
  79. Details regarding the P0741 fix and engine reseal, Seville -99
  80. Guys:How many miles does your N* Motor have, WITHOUT ever doing a HeadGasket repair??
  81. 1996 Engine Swap
  82. 2004 DHS - plugs, coils changed - severe miss is back
  83. drill plate for studs
  84. Putting a NorthStar together in a 96 Deville. Need couple a bolts and some pictures.
  85. priming the oil system
  86. 1996 Deville - coolant leak
  87. Can you identify this bellhousing?
  88. code Y or 9-how do you tell on an '01?
  89. What brand of starter?
  90. Can plug wires deteriorate just from age?
  91. 300,000 mile Northstar
  92. Northstar 4.6 in a 2008 Cheverlot Silverado 1500 LS?
  93. Help Identifying This Throttle Body
  94. prefered oxygen sensor
  95. Antifreeze northstar motor
  96. easy test for blown head gasket
  97. Bank 1 Sensor 1; 96 Deville
  98. Anti-seize on spark plugs?
  99. 2003 STS intermittant P0101
  100. Lower crankcase seal job...
  101. Northstar Mechanics Near Venice, FL
  102. Northstar years - good and bad ?
  103. Is this the original engine in my car
  104. 2000 Deville - possible overheating ??
  105. 1999 deville - new water pump leak
  106. Northstar engine in 2006 Buick Lucerne Issues
  107. Great site for northstars
  108. To dex or not to dex, that is the question
  109. 2001 Deville overheating
  110. HB inserts-2001
  111. Purpose of Valve Reliefs in 1st Gen Motors
  112. Is there a way to look at a N*in a used car & see if the HG bolts have been changed?
  113. Any writeups on 03 DTS 4.6L timing chain replacement?
  114. 1996 Northstar - extended cold cranking periods
  115. 1996 Northstar - CMP location ?
  116. '97 Seville overheating after 2 Miles and after Thermaseal treatment
  117. Northstar lower crankcase torque?
  118. ECM disconnected
  119. 2001 Eldorado - Fix Headgasket or Engine Swap?
  120. Camshaft Position Sensor Replacement
  121. 1993 Allante - engine stalls and bogs. CMP OK
  122. Dune Cruiser...
  123. 1993 Northstar parts needed
  124. E10 and/or Premium fuel
  125. northstar crankshaft main journal size
  126. 1999 DeVille Head Stud, Gasket Repair
  127. Northstar Oil Pump
  128. 1998 Eldorado Knocking when warm
  129. 160000mls service - now engine missfires
  130. Failed Emissions NEED ADVICE!
  131. Headgasket how to prevent that ?
  132. Power steering issue after engine work - 2002 DHS
  133. Classic overheating (99 eldo) pressure relief valve clogged?
  134. timing chain tensioner question
  135. Could this be a busted roller cam follower ?
  136. Dexcool or the green coolant?
  137. 4.6 northstar timing
  138. OIL, 5W30 vs 5W40
  139. Nitrous supporting mods
  140. Transmissions to head brace.
  141. Cylinder Head Dowel Pins???
  142. 2000 DTS used bad Intake manifold
  143. Evap purge valve
  144. 2000 DTS started puilling down engine today
  145. So she put the wrong spark plugs into a 2001 DHS . . .
  146. North Star coolant
  147. NorthStar Performance
  148. 2002 Northstar engine repair
  149. NorthStar Performance - rebuilt rngine info
  150. Northstar transmission interchangeability
  151. What's still good and what's not...
  152. Trying to losing crank pulley bolt and it jumped time cant get the bolt to loosen!!
  153. L37 and LD8 engine interchange question
  154. Guess how many 1993-2003 N* are still on the road, without Head Gasket Failure?
  155. NORTHSTAR Head CASTING #12585774 - engine fit ??
  156. 2001 STS Alternator Not Charging
  157. 2002 STS Cooling Fan Operation
  158. Snapped bolt - serpentine idler, 1994 N*
  159. 1998 Northstar FWD torque converter options
  160. 02 DHS Head gasket job question...
  161. Oil Pan Compatibility
  162. What Should I replace While the engine is out?
  163. Upgraded 1998 DeVille Fuel Injectors
  164. 96 SLS Head Bolts
  165. Motor mounts
  166. complete swap
  167. Motor drags... won't start
  168. Stop engine low oil pressure
  169. Northstar water pump replacement
  170. Right side exhaust manifold removal on 1995 Seville STS
  171. Problem with headbolts on HG repair
  172. 2001 STS Hooked up jumper cables wrong now car wont charge
  173. NP rebuilt engine
  174. 99 STS collapsed lifter?
  175. 2002 Deville remove bumper to remove engine cradle
  176. Northstar Performance - Jake's Studs
  177. Truth about Northstar Engine Failure?
  178. Bank 1, Bank 2 which is which
  179. Changed crankshaft position sensors, have oil leak.
  180. Can STS 2001 Northstar be converted to E85
  181. Setting timing on 96 STS
  182. Northstar headgasket repair parts
  183. Replacing Driver's Side Radiator Fan 1998 DeVille
  184. 2003 SLS -High idle and temperature after cleaning throttle body
  185. New Owner--1999 Deville - P0741
  186. 1997 Eldorado surge tank nipple cracked.
  187. New TPS now Code P085
  188. Vacuum leak
  189. Still Holding On to Bernadette... And don't Want to let go
  190. Oh so soft aluminum
  191. 98 DeVille Overheating, Coolant Leak
  192. 2000 ESC overheating
  193. Head Gasket Blown?
  194. LH2 heads on LD8 ?
  195. RE: Where is Coolant Purge Line?
  196. Engine cover gasket.
  197. 2000 northstar timing
  198. head gasket with engine in car still 99 sts
  199. Question about Northstar engines
  200. 2003 SLS Headgasket?
  201. Damaged block. Am I screwed?
  202. Blown Head Gasket ? - 1998 Northstar
  203. ECM Protocol for 2005 SRX with 4.6L LH2
  204. Can I drill the head studs holes deeper?
  205. HG in Fredericksburg, Virginia
  206. High Mile N* motors somehow cause catalytic converter failures? Need real experience
  207. 1998 DeVille/Northstar engine problems and head gasket fix
  208. P0300 code - Idle is perfectly smooth until engine warms up to 170 degrees
  209. Steel Seal? Yes or No
  210. 2003 Deville Headgasket & Cyl head time?
  211. Weird clicking noise on passenger side of motor by belt.
  212. Is it always the threads?
  213. 1998 Deville overheat ?
  214. '99 Plastic Fuel Rail
  215. Spark Plug & Wire Install - 1998 Deville misfires
  216. Performance camshafts for 2009 "STS" ?
  217. How To: 1998 DeVille Accessory Belt Tensioner Interference!
  218. 95 eldorado engine interchangeability
  219. transmission side pan removal
  220. 1998 DeVille: Reset Codes from Digital Panel
  221. 2004 Deville - ignition coil checks
  222. Overheating Issues 1997 STS
  223. Can a Bad Catalytic Converter Cause Overheating Problems?
  224. I'm back, after CCC studs installed two years ago a blown HG and loose stud WTH?
  225. Headgasket Repair Shops - Maryland
  226. 00+ Northstar Intake manifold...why so filthy inside?
  227. Super Star Studs...Anyone Ever Use Them?
  228. 1998 Deville Northstar head bolt hole repair ?
  229. Need info - Northstar engine rebuild/replace ?
  230. Head Gaskets?
  231. 1997 SLS Head Gasket Repair
  232. 2000 Deville Overheating
  233. Overheating problem - 1999 Deville
  234. 4T80E Transmission swapability
  235. 2002 Deville 220,000 miles. Want to change fuel pump.
  236. Eldorado strip times - Tuning thread
  237. 2001 DTS low oil pressure.
  238. 2003 DeVille oil pan gasket
  239. Longblock swap 2004 to 1995 4.6 FWD possible with 95 electronics?
  240. 94 Deville Concours - engine oil leak
  241. Sounds like a bearing loose - 1997 Deville
  242. Repair estimate quite high. 2000 Deville engine work
  243. Paging JoeTahoe
  244. What studs to get?
  245. Northstar in a Fiero?
  246. Overheating problem - Deville
  247. 1995 Deville ignition Coil Replacement
  248. 99 STS Head Gaskets going... Again
  249. 2000 ETC oil leak
  250. Low Oil Pressure and Coolant Temperature Messages On