: HT4100 4.1, 4.5, 4.9



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  1. 4100 sleeve selection (rehash?)
  2. Oil change and now the light wont go out.
  3. Is it hard to change the coolant on the 4.1?
  4. Performance parts for caddy 4.9 engine?
  5. 4.9 Custom Air intake
  6. Radiator cap PSI for 4.9
  7. Timing 94 Deville
  8. rough running after warm up
  9. Nitrous in 4.9
  10. Stripped Head Bolt Threads
  11. 83 coupe air pump
  12. Removing cat-converter...good idea or no?
  13. URGENT!! Muffler?
  14. Finally summers here, first problem..brakes stuck
  15. leaking deville 4100 need bandaid
  16. Is 104C too hot for a 4.9L 1994 Deville?
  17. Is There Such A Thing As A Starter Motor Overheating?
  18. Illumina /Bbob/Nodh and other Tech types
  19. Possible Seville Engine Swap
  20. E39 Code
  21. 4.5 Performance?
  22. ht4100 bars leaks crap help
  23. 1990 4.5 needs new injectors
  24. My buddy thought the 4.9 was like 250hp!!
  25. Engine STILL missing (intermittant), tons of work done so far--HELP!!!
  26. rumble in the 'ville
  27. My Caddy won't start.
  28. Code 19....1984 DeVille
  29. Longevity of a 4.9L Is 150K too many miles?
  30. What are the common problem areas with 4.9Ls on 1994 Deville?
  31. Knock
  32. 4.9 straightpipes
  33. how common are coolant leaks in 4.9
  34. transmission trouble
  35. 1985 HT 4100 Cast Iron Block & Head???
  36. 93 Deville Idle Sticking
  37. Stuck with a HT4100? I have the solution!
  38. 4.9 problems
  39. Tranny Cooler Part Numbers:92 ETC
  40. 85 HT4100 Swap
  41. Engine knocking
  42. Oil leak (Bbob)
  43. Ht4100 Idle
  44. Any advice on a HT4100 while I'm fixing the timing chain/gears?
  45. dumbass in need of help
  46. HT4100 Idle speed (warmed up)?
  47. Transmission lags the downshifts + sometimes upshifts after high speed drive
  48. Changing Engine Coolant
  49. P085 ....... Idle Throttle Angle Too High
  50. serpantine belt problem, 92 deville
  51. Are You Sure Rotella Is good for the 4.9?
  52. antifreeze in oil please help bbob and all
  53. 89 STS torques to one side
  54. 88 eldorado 4.5 help please
  55. 4.9 water pump bolting question?
  56. 1992 Cadillac Sedan DeVille O2 Sensors
  57. 90 Eldo w/4.5 PROJECT CAR - Advice Desired
  58. fuel injector question
  59. It's the smog pump
  60. Removing/Reinstalling Accelerator Pedal
  61. Risks of Ethanol?
  62. 4.1 compression
  63. replaced water pump/wont start
  64. proper oil for 88 sedan deville
  65. Warmed up engine FLOWMASTER 40series DELTA FLOW clip
  66. Brake cleaner - does it miff the engine gaskets?
  67. 94 Deville 4.9L ...P030 and some other codes....
  68. New to the forum....
  69. Who sells a good CA legal catalytic conv. ?? - We have very strict Smog tests here.
  70. Are these holes in the airfilter housing supposed to have something... '84 HT4100 TBI
  71. New Deville Clips
  72. 84 cadillac seville chargeing problem
  73. 1992 sedan deville head gaskets?
  74. 92 Deville Starter heat shied
  75. 4.5 intake gasket
  76. VSS location?
  77. How do you Remove&Clean Throttle Body, engines too big to see back there.
  78. No More Poop On Coupe ! Yea !
  79. 88 eldo 4.5 running temp and code E027 ?'s
  80. 93 Seville radiator fan
  81. PO41 No Cam reference Signal - broke down on trip
  82. Is the exhaust layout identical per the 1983 and 1984 DeVille 4.1 V8
  83. Aftermarket Cat
  84. Why doesn't an '84 DeVille F'ING show up on most of the online catalogs?
  85. What's the most universal oil filter wrench you have used?
  86. 91' deville
  87. 90 deville water pump?
  88. time for a tune up.. whats involved.
  89. Oil Pressure Light just came on - 4.1 V-8!
  90. CAN you change oil filter withOUT draining oil pan?
  91. 83 coupe 4100 ( 4.1) injector problems
  92. Slow Battery Drain
  93. 4.5 liter misfiring on acceleration, rough idle
  94. HT4100 EGR schematics needed to figure out smog issue, BAD F'ING NEWS
  95. Change of Plans! I'm not supercharging anything...
  96. torque convertors for teh 4t60
  97. BARO on 4.9?
  98. Knocking/Rattling From Engine
  99. injector duty cycle
  100. Dangers of flsuhing HT4100 with motor Flush and Supertech oil.
  101. Fuel pressure
  102. Newbie needs help with 87 seville 4.1L
  103. Can A 4.1 Trans be Used in a Long?...
  104. anyone know????
  105. 4.1 wiring from distributor to plugs HELP ASAP
  106. 84 Eldorado 4.1 V8 (HT4100) "E" engine, M57 tranny, Noise from lower end
  107. remove power steering pulley
  108. coolant temperature
  109. GM Reliability Testing?
  110. 84 SDV RWD 4.1 Intake gasket
  111. Is single 3" exhaust too big for a 4.1L @ 200 HP?
  112. Fuel Injector Replacement
  113. HELP!! 91 Eldo stalling problem
  114. used E C M ... from junk yard
  115. How much booooooooost PSI can these 4.1's take? What gives in under pressure?
  116. Bad ECU?(BBOB)
  117. WHAT THE **** IS EVERYONE's FAVORITE MUFFLER/CAT Pipe SETUP?
  118. 4.9 oil pump in 4.5?
  119. does ECU prevent engine braking
  120. What The Hell Is That Thing!?!?!?!
  121. Cleaning and tune up junk on an 88 4.5L deville
  122. 1990 Deville won't start HELP
  123. What kind of Exhaust systems do the 84 SDV 4.1Liter motors like to breath through?
  124. Took a Vid in my 91 Deville
  125. Knocking in the 4.9
  126. 94 deville questions
  127. Best way to flush system (84 HT4100 SDV)
  128. Info on GM Goodwrench replacement engine, HT4100
  129. And Yet Another ISC Motor Question
  130. Car has no spark
  131. idle rpm
  132. Oil leak
  133. 1990 4.5l air system problem
  134. Oxygen Sensor Broke?
  135. plug wires??
  136. isc motor question
  137. HT 4100 Replacement Source?
  138. 4.5L Valve Pinging / Clattering
  139. problem while coasting
  140. Rough Idle, 87 4.1 Eldorado
  141. What water??
  142. throwing my belt off
  143. Which models come with the 4.9 V8?
  144. Rough running 92 Eldo
  145. 4100 D F I injector problems... looking for solutions
  146. 4.9 codes
  147. Best way to clean my throttle body?
  148. 85 Eldorado 4.1 help!!
  149. Engine Oil Questions - Bboby
  150. Finally. . .Solved Intake Backfire
  151. Whats The AVG MPG Readout for this forum
  152. Engine Idles 10 Seconds AFTER Ignition Shut-Off!!
  153. Weird 4.9 noise (not in archives)
  154. what kinda maintenance should i do
  155. Bbob...Whats the difference!?!
  156. Grounds Anyone?
  157. Ht4100 Backfires Out Of Fuel Injection
  158. Check Fuel Pump Amps draw ? Bob ?
  159. 90 Deville code help
  160. Starts hard when it gets hot
  161. Gas milage back, more power, more smooth..
  162. Rpm/idle Problems
  163. Oil Filter Capacity?
  164. Getting a Attitude Again-missing
  165. Is There a good quick fix for oil consumption?
  166. looking for opinions on best oil/synthetic to use in a 4.1
  167. I Don't Even Know Where To Start
  168. 93 Deville Experts Please e26 239 e47 e97 e98 f32 stalls
  169. Fastest 4.9 Ever?
  170. 93 Sedan 4.9 F32, archives no help
  171. Change spark PLugs
  172. good compression
  173. Where on the Web can I Find AC Delco Spark Plugs Cheap
  174. Changed Oil Pan Gasket, Still Leaking (4.1)
  175. Cam sensor replacement?
  176. Oil drain plug stuck on 4.5!
  177. i want to make sure
  178. Looking for used v-8 intake
  179. Fuel Economy and Engine Power
  180. 85 seville transmission
  181. Rotella coolant.
  182. Noise Under Hood When Turning Ignition On and Off
  183. Coolant Pellets? How Many?
  184. 1990 bcm code e-47
  185. please help
  186. 4-9 Fuel Pump Psi
  187. Engine Knock
  188. help my overheat um i think
  189. Is this the same knock as the 4.9 knock? It is an HT4100
  190. 4.9 valve cover
  191. Porting on HT4100's
  192. 4.5L Idle Problem Solved!! Thanks, bbobynski
  193. 84 deville died, won't restart ht4100
  194. surging power
  195. Air Management System Problem
  196. '85 Deville running rich
  197. 4.9 60k knock gone!!!!!!!!!!!!!!!!!
  198. Install Separate Thermostatic Fan Control?
  199. 4.1 Eldorado Oil Pan Gasket Change; MAJOR PAIN!
  200. Anyone Need a HT 4100
  201. questions on 4.9l v8
  202. '92 4.9 Stalling after transmission rebuild
  203. Fuel Injectors 94 Deville 4.9L
  204. 4.9L compatable with small block???
  205. 92 seville performance help
  206. Bbob- Open Loop Better Than Closed??
  207. 86 Seville 4.1 advice re removal of water pump
  208. GM parts vs Aftermarket- HT4100
  209. Where's the ALDL on my 88 Deville?
  210. Tranny Woes
  211. 4.9 with 60K knocking, please help!!!!!!!!!!!
  212. ISC Motor &TPS/E30 code
  213. To ILLUMINA!!! RE Performance Parts for 4.9
  214. Transmission
  215. Cleaned egr tubes
  216. 95 deville blown head gasket
  217. Question About Changing Water Pump
  218. Purchased 1984 Sedan Deville
  219. stock 4.9 intake to allante intake comparison
  220. What kind of problems do you get if you have a F32 code
  221. Amsoil for 4.9
  222. 93 weirdo miss
  223. Mixing oils...
  224. What Is A PCM?
  225. What is a BCM?
  226. Redline/Tachometer
  227. HT4100 "Base Timing Mode"
  228. A few 4.x questions
  229. 4.x dyno and comparison questions
  230. '90 Deville 4.5 idle problems
  231. 200R4 slipping real bad
  232. 88 Deville...E30 & EE30 code
  233. 4 prong spark plugs on 4.5
  234. Idle Speed Control Unit
  235. Does Anyone have F codes for a 93 deville
  236. thermostat
  237. Computer/wiring on 4.1L to 4.5L swap
  238. 1988 Deville Fast idle problems 4.5L
  239. 4.5--->4.9? (maybe more)
  240. HT4100 0-60 times!
  241. tranny slipping and e39 vcc
  242. Cheap HPs?
  243. Help!!!My caddy flunked the emmissions test
  244. 92 Help!!!
  245. Left or Right Bank Fuel Imbalance
  246. Engine Misses when cold
  247. The "4.9 liter turbocharger, stage 1" thread.
  248. code19
  249. Code E30 ( NO DASH!!! )
  250. 93 DeVille failed IL CO and HC emissions - need help