: Northstar Engines and System Technical Discussion



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  1. 1996 - 2003 Northstar head bolt torque specs
  2. 95 STS Northstar idles up and down pretty much all the time
  3. rear ignition cassette removal-2001
  4. Aurora L47 V8
  5. 4T80E Shift Kits?
  6. Northstar pre oil change cleaners / additives
  7. 4T80E Transmission will not engage (in any gear front or back)
  8. 2000 Eldorado Engine Noise
  9. Keeping 1st gear with T/C off on the 96-99 Northstars - Tuning update
  10. water pump removal
  11. Rear main seal question...
  12. NorthStar Top End Teardown in Car - Cylinder Head Insert Repair
  13. 1997 Northstar insert and timing help
  14. Check Engine Light won't go off - 2003 DTS
  15. Cylinder Compression
  16. P0300 - Misfires on cyls 1 and 2
  17. What's this gasket?
  18. torx size for studs studs
  19. 2000 Deville Now Burning A Quart Every 300 Miles Now What? 115k
  20. Odd possible HG failure - 2003 STS
  21. Check Coolant Level
  22. 1997 Deville Possible topend, maybe full rebuild!
  23. 2001 SLS Ignition Coil Packs
  24. Possible Head Gasket 2001 Deville
  25. 01 Overheating; suspect coolant flow Please advise.
  26. 2005 Deville Head Gasket
  27. Northstar thermostat housing leaks, possible overheating
  28. 2009 DTS 100,000 miles - burning oil smell
  29. Northstar timing chain tensioners
  30. 2000 DeVille - high temps, possible head gasket leak
  31. Hello all, I have an intake question
  32. valve roller rockers-2001
  33. Northstar block question
  34. Snakes
  35. Freeze Plugs
  36. Oil filer adapter o rings and oil level tube o ring
  37. LD8 vs LH2/LC3 Exhaust Flange
  38. Another Overheating question
  39. Cleaning Carbon Deposits on pistons/rings ??????
  40. 06 Luceren Northstar V8 overheating and heater core coolant leakage?
  41. P0140 after New Sensor
  42. freeze spray for guide pin removal
  43. Swap question
  44. Swapping a Y for a 9-2001
  45. Engines - 2001 SLS with cracked block
  46. 2000 STS wont start
  47. I cant get the front valve cover off a 1999 Seville Northstar
  48. trouble code P0175
  49. 2000 deville won't start due to gears
  50. 06 SRX N* VVT Part identification
  51. Building a 1996 Northstar base Deville engine
  52. 2005 Northstar Lifters Ticking
  53. Recommended spark plug for 2001 Northstar
  54. Rad Fan Diagnosis - 1997 SLS
  55. Deville cooling fans problem
  56. Best gasket/bolt kit for 1999 Northstar head job
  57. Cadillac Deville Engine swap 95 in a 98
  58. 99 Deville 4.6 Northstar - left intake camshaft replace
  59. 2000 STS with P0300 #4 - misfire - valvetrain damage
  60. 2002 Deville - P 0741 alone, long trip ?
  61. Head Gasket dilemma -- 1999 Deville
  62. 02 deville overheated and now starts rough for about 10-20 seconds
  63. Pros and Cons Of A Northstar
  64. Chevron Techron Usage
  65. 2002 STS Head Gasket repair... and more?
  66. 2000 Deville - Coolant leak from overflow tube
  67. Cassette Bolts
  68. Help, car won't start!
  69. 4T80E Fluid level
  70. Just curious ...
  71. 95 Vin9 transmission
  72. This sounds BAD... 2004 Deville Northstar with ticks and rattles
  73. 1998 STS some oil use, drips of oil every couple days & suspect head gasket
  74. Fuse issues - 1996 SLS injector circuits
  75. Oil leak at head.
  76. 94 Concours with First Generation Northstar
  77. Motor Rebuild Problem
  78. power steering
  79. 1999 Deville - P 0404 but I do not think its the EGR Valve
  80. New to me 08' DTS service question.
  81. 2011 Northstar HG
  82. Need a recommended Northstar rebuilder for purchase of new engine for my 01 deville.
  83. Details regarding the P0741 fix and engine reseal, Seville -99
  84. Guys:How many miles does your N* Motor have, WITHOUT ever doing a HeadGasket repair??
  85. 1996 Engine Swap
  86. 2004 DHS - plugs, coils changed - severe miss is back
  87. drill plate for studs
  88. Putting a NorthStar together in a 96 Deville. Need couple a bolts and some pictures.
  89. priming the oil system
  90. 1996 Deville - coolant leak
  91. Can you identify this bellhousing?
  92. code Y or 9-how do you tell on an '01?
  93. What brand of starter?
  94. Can plug wires deteriorate just from age?
  95. 300,000 mile Northstar
  96. Northstar 4.6 in a 2008 Cheverlot Silverado 1500 LS?
  97. Help Identifying This Throttle Body
  98. prefered oxygen sensor
  99. Antifreeze northstar motor
  100. easy test for blown head gasket
  101. Bank 1 Sensor 1; 96 Deville
  102. Anti-seize on spark plugs?
  103. 2003 STS intermittant P0101
  104. Lower crankcase seal job...
  105. Northstar Mechanics Near Venice, FL
  106. Northstar years - good and bad ?
  107. Is this the original engine in my car
  108. 2000 Deville - possible overheating ??
  109. 1999 deville - new water pump leak
  110. Northstar engine in 2006 Buick Lucerne Issues
  111. Great site for northstars
  112. To dex or not to dex, that is the question
  113. 2001 Deville overheating
  114. HB inserts-2001
  115. Purpose of Valve Reliefs in 1st Gen Motors
  116. Is there a way to look at a N*in a used car & see if the HG bolts have been changed?
  117. Any writeups on 03 DTS 4.6L timing chain replacement?
  118. 1996 Northstar - extended cold cranking periods
  119. 1996 Northstar - CMP location ?
  120. '97 Seville overheating after 2 Miles and after Thermaseal treatment
  121. Northstar lower crankcase torque?
  122. ECM disconnected
  123. 2001 Eldorado - Fix Headgasket or Engine Swap?
  124. Camshaft Position Sensor Replacement
  125. 1993 Allante - engine stalls and bogs. CMP OK
  126. Dune Cruiser...
  127. 1993 Northstar parts needed
  128. E10 and/or Premium fuel
  129. northstar crankshaft main journal size
  130. 1999 DeVille Head Stud, Gasket Repair
  131. Northstar Oil Pump
  132. 1998 Eldorado Knocking when warm
  133. 160000mls service - now engine missfires
  134. Failed Emissions NEED ADVICE!
  135. Headgasket how to prevent that ?
  136. Power steering issue after engine work - 2002 DHS
  137. Classic overheating (99 eldo) pressure relief valve clogged?
  138. timing chain tensioner question
  139. Could this be a busted roller cam follower ?
  140. Dexcool or the green coolant?
  141. 4.6 northstar timing
  142. OIL, 5W30 vs 5W40
  143. Nitrous supporting mods
  144. Transmissions to head brace.
  145. Cylinder Head Dowel Pins???
  146. 2000 DTS used bad Intake manifold
  147. Evap purge valve
  148. 2000 DTS started puilling down engine today
  149. So she put the wrong spark plugs into a 2001 DHS . . .
  150. North Star coolant
  151. NorthStar Performance
  152. 2002 Northstar engine repair
  153. NorthStar Performance - rebuilt rngine info
  154. Northstar transmission interchangeability
  155. What's still good and what's not...
  156. Trying to losing crank pulley bolt and it jumped time cant get the bolt to loosen!!
  157. L37 and LD8 engine interchange question
  158. Guess how many 1993-2003 N* are still on the road, without Head Gasket Failure?
  159. NORTHSTAR Head CASTING #12585774 - engine fit ??
  160. 2001 STS Alternator Not Charging
  161. 2002 STS Cooling Fan Operation
  162. Snapped bolt - serpentine idler, 1994 N*
  163. 1998 Northstar FWD torque converter options
  164. 02 DHS Head gasket job question...
  165. Oil Pan Compatibility
  166. What Should I replace While the engine is out?
  167. Upgraded 1998 DeVille Fuel Injectors
  168. 96 SLS Head Bolts
  169. Motor mounts
  170. complete swap
  171. Motor drags... won't start
  172. Stop engine low oil pressure
  173. Northstar water pump replacement
  174. Right side exhaust manifold removal on 1995 Seville STS
  175. Problem with headbolts on HG repair
  176. 2001 STS Hooked up jumper cables wrong now car wont charge
  177. NP rebuilt engine
  178. 99 STS collapsed lifter?
  179. 2002 Deville remove bumper to remove engine cradle
  180. Northstar Performance - Jake's Studs
  181. Truth about Northstar Engine Failure?
  182. Bank 1, Bank 2 which is which
  183. Changed crankshaft position sensors, have oil leak.
  184. Can STS 2001 Northstar be converted to E85
  185. Setting timing on 96 STS
  186. Northstar headgasket repair parts
  187. Replacing Driver's Side Radiator Fan 1998 DeVille
  188. 2003 SLS -High idle and temperature after cleaning throttle body
  189. New Owner--1999 Deville - P0741
  190. 1997 Eldorado surge tank nipple cracked.
  191. New TPS now Code P085
  192. Vacuum leak
  193. Still Holding On to Bernadette... And don't Want to let go
  194. Oh so soft aluminum
  195. 98 DeVille Overheating, Coolant Leak
  196. 2000 ESC overheating
  197. Head Gasket Blown?
  198. LH2 heads on LD8 ?
  199. RE: Where is Coolant Purge Line?
  200. Engine cover gasket.
  201. 2000 northstar timing
  202. head gasket with engine in car still 99 sts
  203. Question about Northstar engines
  204. 2003 SLS Headgasket?
  205. Damaged block. Am I screwed?
  206. Blown Head Gasket ? - 1998 Northstar
  207. ECM Protocol for 2005 SRX with 4.6L LH2
  208. Can I drill the head studs holes deeper?
  209. HG in Fredericksburg, Virginia
  210. High Mile N* motors somehow cause catalytic converter failures? Need real experience
  211. 1998 DeVille/Northstar engine problems and head gasket fix
  212. P0300 code - Idle is perfectly smooth until engine warms up to 170 degrees
  213. Steel Seal? Yes or No
  214. 2003 Deville Headgasket & Cyl head time?
  215. Weird clicking noise on passenger side of motor by belt.
  216. Is it always the threads?
  217. 1998 Deville overheat ?
  218. '99 Plastic Fuel Rail
  219. Spark Plug & Wire Install - 1998 Deville misfires
  220. Performance camshafts for 2009 "STS" ?
  221. How To: 1998 DeVille Accessory Belt Tensioner Interference!
  222. 95 eldorado engine interchangeability
  223. transmission side pan removal
  224. 1998 DeVille: Reset Codes from Digital Panel
  225. 2004 Deville - ignition coil checks
  226. Overheating Issues 1997 STS
  227. Can a Bad Catalytic Converter Cause Overheating Problems?
  228. I'm back, after CCC studs installed two years ago a blown HG and loose stud WTH?
  229. Headgasket Repair Shops - Maryland
  230. 00+ Northstar Intake manifold...why so filthy inside?
  231. Super Star Studs...Anyone Ever Use Them?
  232. 1998 Deville Northstar head bolt hole repair ?
  233. Need info - Northstar engine rebuild/replace ?
  234. Head Gaskets?
  235. 1997 SLS Head Gasket Repair
  236. 2000 Deville Overheating
  237. Overheating problem - 1999 Deville
  238. 4T80E Transmission swapability
  239. 2002 Deville 220,000 miles. Want to change fuel pump.
  240. Eldorado strip times - Tuning thread
  241. 2001 DTS low oil pressure.
  242. 2003 DeVille oil pan gasket
  243. Longblock swap 2004 to 1995 4.6 FWD possible with 95 electronics?
  244. 94 Deville Concours - engine oil leak
  245. Sounds like a bearing loose - 1997 Deville
  246. Repair estimate quite high. 2000 Deville engine work
  247. Paging JoeTahoe
  248. What studs to get?
  249. Northstar in a Fiero?
  250. Overheating problem - Deville