: HT4100 4.1, 4.5, 4.9



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  1. 4.9 Custom Header - Gauging Interest
  2. 95 Deville PO39 code need help!!!!!!!!!
  3. Converter Inlet Size??
  4. throttle switch short
  5. 4100 sleeve selection (rehash?)
  6. Oil change and now the light wont go out.
  7. Is it hard to change the coolant on the 4.1?
  8. Performance parts for caddy 4.9 engine?
  9. 4.9 Custom Air intake
  10. Radiator cap PSI for 4.9
  11. Timing 94 Deville
  12. rough running after warm up
  13. Nitrous in 4.9
  14. Stripped Head Bolt Threads
  15. 83 coupe air pump
  16. Removing cat-converter...good idea or no?
  17. URGENT!! Muffler?
  18. Finally summers here, first problem..brakes stuck
  19. leaking deville 4100 need bandaid
  20. Is 104C too hot for a 4.9L 1994 Deville?
  21. Is There Such A Thing As A Starter Motor Overheating?
  22. Illumina /Bbob/Nodh and other Tech types
  23. Possible Seville Engine Swap
  24. E39 Code
  25. 4.5 Performance?
  26. ht4100 bars leaks crap help
  27. 1990 4.5 needs new injectors
  28. My buddy thought the 4.9 was like 250hp!!
  29. Engine STILL missing (intermittant), tons of work done so far--HELP!!!
  30. rumble in the 'ville
  31. My Caddy won't start.
  32. Code 19....1984 DeVille
  33. Longevity of a 4.9L Is 150K too many miles?
  34. What are the common problem areas with 4.9Ls on 1994 Deville?
  35. Knock
  36. 4.9 straightpipes
  37. how common are coolant leaks in 4.9
  38. transmission trouble
  39. 1985 HT 4100 Cast Iron Block & Head???
  40. 93 Deville Idle Sticking
  41. Stuck with a HT4100? I have the solution!
  42. 4.9 problems
  43. Tranny Cooler Part Numbers:92 ETC
  44. 85 HT4100 Swap
  45. Engine knocking
  46. Oil leak (Bbob)
  47. Ht4100 Idle
  48. Any advice on a HT4100 while I'm fixing the timing chain/gears?
  49. dumbass in need of help
  50. HT4100 Idle speed (warmed up)?
  51. Transmission lags the downshifts + sometimes upshifts after high speed drive
  52. Changing Engine Coolant
  53. P085 ....... Idle Throttle Angle Too High
  54. serpantine belt problem, 92 deville
  55. Are You Sure Rotella Is good for the 4.9?
  56. antifreeze in oil please help bbob and all
  57. 89 STS torques to one side
  58. 88 eldorado 4.5 help please
  59. 4.9 water pump bolting question?
  60. 1992 Cadillac Sedan DeVille O2 Sensors
  61. 90 Eldo w/4.5 PROJECT CAR - Advice Desired
  62. fuel injector question
  63. It's the smog pump
  64. Removing/Reinstalling Accelerator Pedal
  65. Risks of Ethanol?
  66. 4.1 compression
  67. replaced water pump/wont start
  68. proper oil for 88 sedan deville
  69. Warmed up engine FLOWMASTER 40series DELTA FLOW clip
  70. Brake cleaner - does it miff the engine gaskets?
  71. 94 Deville 4.9L ...P030 and some other codes....
  72. New to the forum....
  73. Who sells a good CA legal catalytic conv. ?? - We have very strict Smog tests here.
  74. Are these holes in the airfilter housing supposed to have something... '84 HT4100 TBI
  75. New Deville Clips
  76. 84 cadillac seville chargeing problem
  77. 1992 sedan deville head gaskets?
  78. 92 Deville Starter heat shied
  79. 4.5 intake gasket
  80. VSS location?
  81. How do you Remove&Clean Throttle Body, engines too big to see back there.
  82. No More Poop On Coupe ! Yea !
  83. 88 eldo 4.5 running temp and code E027 ?'s
  84. 93 Seville radiator fan
  85. PO41 No Cam reference Signal - broke down on trip
  86. Is the exhaust layout identical per the 1983 and 1984 DeVille 4.1 V8
  87. Aftermarket Cat
  88. Why doesn't an '84 DeVille F'ING show up on most of the online catalogs?
  89. What's the most universal oil filter wrench you have used?
  90. 91' deville
  91. 90 deville water pump?
  92. time for a tune up.. whats involved.
  93. Oil Pressure Light just came on - 4.1 V-8!
  94. CAN you change oil filter withOUT draining oil pan?
  95. 83 coupe 4100 ( 4.1) injector problems
  96. Slow Battery Drain
  97. 4.5 liter misfiring on acceleration, rough idle
  98. HT4100 EGR schematics needed to figure out smog issue, BAD F'ING NEWS
  99. Change of Plans! I'm not supercharging anything...
  100. torque convertors for teh 4t60
  101. BARO on 4.9?
  102. Knocking/Rattling From Engine
  103. injector duty cycle
  104. Dangers of flsuhing HT4100 with motor Flush and Supertech oil.
  105. Fuel pressure
  106. Newbie needs help with 87 seville 4.1L
  107. Can A 4.1 Trans be Used in a Long?...
  108. anyone know????
  109. 4.1 wiring from distributor to plugs HELP ASAP
  110. 84 Eldorado 4.1 V8 (HT4100) "E" engine, M57 tranny, Noise from lower end
  111. remove power steering pulley
  112. coolant temperature
  113. GM Reliability Testing?
  114. 84 SDV RWD 4.1 Intake gasket
  115. Is single 3" exhaust too big for a 4.1L @ 200 HP?
  116. Fuel Injector Replacement
  117. HELP!! 91 Eldo stalling problem
  118. used E C M ... from junk yard
  119. How much booooooooost PSI can these 4.1's take? What gives in under pressure?
  120. Bad ECU?(BBOB)
  121. WHAT THE **** IS EVERYONE's FAVORITE MUFFLER/CAT Pipe SETUP?
  122. 4.9 oil pump in 4.5?
  123. does ECU prevent engine braking
  124. What The Hell Is That Thing!?!?!?!
  125. Cleaning and tune up junk on an 88 4.5L deville
  126. 1990 Deville won't start HELP
  127. What kind of Exhaust systems do the 84 SDV 4.1Liter motors like to breath through?
  128. Took a Vid in my 91 Deville
  129. Knocking in the 4.9
  130. 94 deville questions
  131. Best way to flush system (84 HT4100 SDV)
  132. Info on GM Goodwrench replacement engine, HT4100
  133. And Yet Another ISC Motor Question
  134. Car has no spark
  135. idle rpm
  136. Oil leak
  137. 1990 4.5l air system problem
  138. Oxygen Sensor Broke?
  139. plug wires??
  140. isc motor question
  141. HT 4100 Replacement Source?
  142. 4.5L Valve Pinging / Clattering
  143. problem while coasting
  144. Rough Idle, 87 4.1 Eldorado
  145. What water??
  146. throwing my belt off
  147. Which models come with the 4.9 V8?
  148. Rough running 92 Eldo
  149. 4100 D F I injector problems... looking for solutions
  150. 4.9 codes
  151. Best way to clean my throttle body?
  152. 85 Eldorado 4.1 help!!
  153. Engine Oil Questions - Bboby
  154. Finally. . .Solved Intake Backfire
  155. Whats The AVG MPG Readout for this forum
  156. Engine Idles 10 Seconds AFTER Ignition Shut-Off!!
  157. Weird 4.9 noise (not in archives)
  158. what kinda maintenance should i do
  159. Bbob...Whats the difference!?!
  160. Grounds Anyone?
  161. Ht4100 Backfires Out Of Fuel Injection
  162. Check Fuel Pump Amps draw ? Bob ?
  163. 90 Deville code help
  164. Starts hard when it gets hot
  165. Gas milage back, more power, more smooth..
  166. Rpm/idle Problems
  167. Oil Filter Capacity?
  168. Getting a Attitude Again-missing
  169. Is There a good quick fix for oil consumption?
  170. looking for opinions on best oil/synthetic to use in a 4.1
  171. I Don't Even Know Where To Start
  172. 93 Deville Experts Please e26 239 e47 e97 e98 f32 stalls
  173. Fastest 4.9 Ever?
  174. 93 Sedan 4.9 F32, archives no help
  175. Change spark PLugs
  176. good compression
  177. Where on the Web can I Find AC Delco Spark Plugs Cheap
  178. Changed Oil Pan Gasket, Still Leaking (4.1)
  179. Cam sensor replacement?
  180. Oil drain plug stuck on 4.5!
  181. i want to make sure
  182. Looking for used v-8 intake
  183. Fuel Economy and Engine Power
  184. 85 seville transmission
  185. Rotella coolant.
  186. Noise Under Hood When Turning Ignition On and Off
  187. Coolant Pellets? How Many?
  188. 1990 bcm code e-47
  189. please help
  190. 4-9 Fuel Pump Psi
  191. Engine Knock
  192. help my overheat um i think
  193. Is this the same knock as the 4.9 knock? It is an HT4100
  194. 4.9 valve cover
  195. Porting on HT4100's
  196. 4.5L Idle Problem Solved!! Thanks, bbobynski
  197. 84 deville died, won't restart ht4100
  198. surging power
  199. Air Management System Problem
  200. '85 Deville running rich
  201. 4.9 60k knock gone!!!!!!!!!!!!!!!!!
  202. Install Separate Thermostatic Fan Control?
  203. 4.1 Eldorado Oil Pan Gasket Change; MAJOR PAIN!
  204. Anyone Need a HT 4100
  205. questions on 4.9l v8
  206. '92 4.9 Stalling after transmission rebuild
  207. Fuel Injectors 94 Deville 4.9L
  208. 4.9L compatable with small block???
  209. 92 seville performance help
  210. Bbob- Open Loop Better Than Closed??
  211. 86 Seville 4.1 advice re removal of water pump
  212. GM parts vs Aftermarket- HT4100
  213. Where's the ALDL on my 88 Deville?
  214. Tranny Woes
  215. 4.9 with 60K knocking, please help!!!!!!!!!!!
  216. ISC Motor &TPS/E30 code
  217. To ILLUMINA!!! RE Performance Parts for 4.9
  218. Transmission
  219. Cleaned egr tubes
  220. 95 deville blown head gasket
  221. Question About Changing Water Pump
  222. Purchased 1984 Sedan Deville
  223. stock 4.9 intake to allante intake comparison
  224. What kind of problems do you get if you have a F32 code
  225. Amsoil for 4.9
  226. 93 weirdo miss
  227. Mixing oils...
  228. What Is A PCM?
  229. What is a BCM?
  230. Redline/Tachometer
  231. HT4100 "Base Timing Mode"
  232. A few 4.x questions
  233. 4.x dyno and comparison questions
  234. '90 Deville 4.5 idle problems
  235. 200R4 slipping real bad
  236. 88 Deville...E30 & EE30 code
  237. 4 prong spark plugs on 4.5
  238. Idle Speed Control Unit
  239. Does Anyone have F codes for a 93 deville
  240. thermostat
  241. Computer/wiring on 4.1L to 4.5L swap
  242. 1988 Deville Fast idle problems 4.5L
  243. 4.5--->4.9? (maybe more)
  244. HT4100 0-60 times!
  245. tranny slipping and e39 vcc
  246. Cheap HPs?
  247. Help!!!My caddy flunked the emmissions test
  248. 92 Help!!!
  249. Left or Right Bank Fuel Imbalance
  250. Engine Misses when cold