HT4100 4.1, 4.5, 4.9
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HT4100 4.1, 4.5, 4.9 in Cadillac forums : Cadillac Owners Forum, This forum is to discuss the newer aluminum block Cadillac engines.
  1. Sticky Thread Sticky: Safety Safety Safety !

    Started by Stoneage_Caddy‎, 06-11-04 07:53 PM
    3 Pages
    1 2 3
    • Replies: 34
    • Views: 13,908
    12-15-13, 11:54 AM Go to last post
  2. Sticky Thread Sticky: The "4.9 liter turbocharger, stage 1" thread.

    Started by illumina‎, 03-12-05 01:05 AM
    16 Pages
    1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
    • Replies: 238
    • Views: 93,432
    02-24-11, 02:56 PM Go to last post
  3. Sticky Thread Sticky: OBD I codes for 4.x Engines

    Started by DaveSmed‎, 09-20-04 02:50 AM
    • Replies: 0
    • Views: 43,041
    09-20-04, 02:50 AM Go to last post
    • Replies: 1
    • Views: 86
    DPD
    11-19-14, 10:59 PM Go to last post
  1. 4.9 oil pump in 4.5

    Started by drewsdeville‎, 09-28-10 08:21 PM
    • Replies: 5
    • Views: 989
    11-18-14, 01:01 PM Go to last post
  2. 85 eldo upcoming purchase questions

    Started by domer94‎, 11-12-14 03:54 PM
    • Replies: 2
    • Views: 155
    11-17-14, 09:39 PM Go to last post
  3. EGR Valve. 'P' or 'N' type ?

    Started by Mr.BayArea‎, 11-13-14 01:51 PM
    • Replies: 2
    • Views: 102
    11-13-14, 03:27 PM Go to last post
  4. 82 Seville not idiling or running correctly

    Started by DPD‎, 09-23-14 08:52 PM
    3 Pages
    1 2 3
    • Replies: 43
    • Views: 790
    11-12-14, 06:55 PM Go to last post
    • Replies: 1
    • Views: 112
    11-12-14, 09:11 AM Go to last post
  5. 4.9 engine oil pump needed

    Started by shaagger‎, 11-12-14 01:31 AM
    • Replies: 0
    • Views: 98
    11-12-14, 01:31 AM Go to last post
  6. Timing advance car nut

    Started by omston‎, 11-08-14 11:02 PM
    • Replies: 4
    • Views: 172
    11-10-14, 10:15 AM Go to last post
  7. Mid 80's edorado... Do or dont???

    Started by domer94‎, 10-22-14 09:50 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 455
    11-09-14, 07:24 PM Go to last post
  8. 1984 Seville 4.1 - need head bolt set

    Started by omston‎, 11-08-14 07:32 PM
    • Replies: 1
    • Views: 203
    11-09-14, 04:22 PM Go to last post
  9. Got a Reply! on HT4100 TO 4500 Conversion!

    Started by ForrestAMDXP‎, 02-23-05 04:54 PM
    • Replies: 2
    • Views: 1,036
    11-04-14, 01:15 AM Go to last post
    • Replies: 1
    • Views: 144
    11-02-14, 08:43 PM Go to last post
  10. Question 4.1 Oscillating/Hunting idle , any suggestions besides...

    Started by notease‎, 10-12-14 12:22 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 391
    10-28-14, 05:02 AM Go to last post
  11. Timing marks for 4.1 1984 engine

    Started by jimbab5‎, 10-14-14 09:09 PM
    • Replies: 5
    • Views: 216
    10-16-14, 11:32 AM Go to last post
  12. What year and model is this engine from?

    Started by desotodude‎, 10-03-14 06:38 PM
    • Replies: 4
    • Views: 235
    10-12-14, 11:59 PM Go to last post
  13. Ht4100 Supplement Pellets nowadays ?

    Started by notease‎, 10-09-14 11:21 AM
    • Replies: 5
    • Views: 285
    10-11-14, 05:55 PM Go to last post
  14. 85 Eldorado 4.1

    Started by maxx123‎, 10-09-14 08:40 AM
    • Replies: 4
    • Views: 266
    10-11-14, 09:41 AM Go to last post
  15. First time Cadillac owner - bad 4.1 engine

    Started by 4100engineswap‎, 04-29-14 09:47 AM
    • Replies: 4
    • Views: 786
    10-07-14, 06:24 PM Go to last post
    • Replies: 0
    • Views: 155
    10-04-14, 03:18 PM Go to last post
  16. 1990 DeVille, 4.5l engine issues

    Started by caddynewby‎, 05-09-13 03:19 PM
    • Replies: 2
    • Views: 843
    09-28-14, 11:34 AM Go to last post
    • Replies: 6
    • Views: 292
    09-26-14, 05:38 PM Go to last post
  17. 1995 Deville - FPR replacement tips ?

    Started by rayjuswa‎, 09-19-14 10:01 PM
    • Replies: 5
    • Views: 295
    09-23-14, 04:22 PM Go to last post
    • Replies: 9
    • Views: 332
    09-22-14, 12:17 PM Go to last post
    • Replies: 1
    • Views: 387
    09-21-14, 09:44 PM Go to last post
  18. distributor question

    Started by quins90lac‎, 10-06-11 03:41 AM
    • Replies: 8
    • Views: 1,190
    09-21-14, 09:07 PM Go to last post

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