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: 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: 93,684
    02-24-11, 02:56 PM Go to last post
  2. Sticky Thread Sticky: Safety Safety Safety !

    Started by Stoneage_Caddy‎, 06-11-04 07:53 PM
    3 Pages
    1 2 3
    • Replies: 34
    • Views: 13,936
    12-15-13, 11:54 AM 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: 43,158
    09-20-04, 02:50 AM Go to last post
  1. I'm going to try the 4.1->4.9 conversion

    Started by ehall‎, 01-13-08 02:49 AM
    11 Pages
    1 2 3 4 5 6 7 8 9 10 11
    • Replies: 151
    • Views: 16,779
    09-19-11, 05:42 PM Go to last post
  2. 1992 DeVille Misfiring, or something.

    Started by Mahalaleel‎, 02-13-05 11:44 PM
    7 Pages
    1 2 3 4 5 6 7
    • Replies: 103
    • Views: 7,573
    12-15-05, 11:47 PM Go to last post
  3. Talking 4.1vs4.9

    Started by kdaddy‎, 10-20-04 01:46 PM
    7 Pages
    1 2 3 4 5 6 7
    • Replies: 94
    • Views: 3,315
    01-20-05, 12:21 AM Go to last post
  4. Power improvement... from a carburator?

    Started by Night Wolf‎, 01-16-06 06:07 PM
    7 Pages
    1 2 3 4 5 6 7
    • Replies: 93
    • Views: 6,291
    01-24-06, 12:59 PM Go to last post
    • Replies: 89
    • Views: 2,376
    01-27-06, 03:11 AM Go to last post
  5. 4.9 cadillac external upgrades

    Started by illumina‎, 04-07-04 02:26 PM
    6 Pages
    1 2 3 4 5 6
    • Replies: 84
    • Views: 5,998
    05-11-04, 05:25 PM Go to last post
  6. Mobil 1 Extended Performance? BBob!

    Started by 99Zee28‎, 02-22-05 06:15 PM
    6 Pages
    1 2 3 4 5 6
    • Replies: 84
    • Views: 8,640
    11-30-05, 04:42 PM Go to last post
  7. 4.1 vs 4.9

    Started by Stoneage_Caddy‎, 01-12-05 10:36 PM
    6 Pages
    1 2 3 4 5 6
    • Replies: 83
    • Views: 5,704
    01-16-06, 01:19 AM Go to last post
    • Replies: 80
    • Views: 10,113
    10-08-13, 10:05 PM Go to last post
  8. 4.9 Potential? (Split from "4.9 to a 5.0?")

    Started by bbbnickledimer‎, 09-29-06 10:20 PM
    6 Pages
    1 2 3 4 5 6
    • Replies: 79
    • Views: 3,201
    11-20-06, 05:16 PM Go to last post
  9. Extra HP & Torque

    Started by Sporty883‎, 01-07-09 03:57 PM
    6 Pages
    1 2 3 4 5 6
    • Replies: 79
    • Views: 6,359
    06-24-09, 02:20 PM Go to last post
  10. Cone Filter & Cold Air Intake

    Started by 92EldoTC‎, 07-05-06 11:36 PM
    6 Pages
    1 2 3 4 5 6
    • Replies: 77
    • Views: 5,889
    09-12-06, 01:41 PM Go to last post
  11. 4.9 performance

    Started by Night Wolf‎, 05-21-03 06:49 PM
    6 Pages
    1 2 3 4 5 6
    • Replies: 76
    • Views: 14,575
    04-02-04, 05:16 PM Go to last post
  12. HT4100 Check In

    Started by caddeville‎, 06-07-06 04:03 PM
    5 Pages
    1 2 3 4 5
    • Replies: 74
    • Views: 11,375
    02-24-10, 12:51 AM Go to last post
  13. Engine Swap Process

    Started by Cristofo‎, 03-07-11 10:06 PM
    5 Pages
    1 2 3 4 5
    • Replies: 74
    • Views: 4,254
    04-06-11, 04:14 PM Go to last post
  14. Stoneys Main Bearing Diary

    Started by Stoneage_Caddy‎, 12-03-05 05:58 PM
    5 Pages
    1 2 3 4 5
    • Replies: 73
    • Views: 3,663
    HUF
    12-20-05, 02:23 PM Go to last post
  15. Fuel Injectors 94 Deville 4.9L

    Started by Cadillac_Scout‎, 04-01-05 11:41 AM
    5 Pages
    1 2 3 4 5
    • Replies: 72
    • Views: 8,036
    07-29-12, 01:34 AM Go to last post
  16. chugging and backfiring intermittently. No codes

    Started by red_ghost‎, 04-22-10 10:25 AM
    5 Pages
    1 2 3 4 5
    • Replies: 70
    • Views: 8,014
    09-21-10, 11:56 AM Go to last post
  17. My engine build up

    Started by red_ghost‎, 01-16-09 12:42 PM
    5 Pages
    1 2 3 4 5
    • Replies: 68
    • Views: 7,684
    05-28-09, 10:04 AM Go to last post
  18. 4.1,4.5,4.9..Which You Prefer?

    Started by JoJo_Brand_Star‎, 11-28-09 01:44 PM
    5 Pages
    1 2 3 4 5
    • Replies: 65
    • Views: 5,564
    04-26-11, 05:21 AM Go to last post
  19. e23 and e27

    Started by Reverend Hearse‎, 10-24-10 12:42 PM
    5 Pages
    1 2 3 4 5
    • Replies: 65
    • Views: 5,511
    01-21-11, 06:43 PM Go to last post
  20. 4.9 Will Not Idle Below 2500rpm!

    Started by skor‎, 07-02-07 05:30 PM
    5 Pages
    1 2 3 4 5
    • Replies: 63
    • Views: 6,116
    01-02-11, 03:36 PM Go to last post
  21. Spark Plugs: What do YOU run?

    Started by Sevillian273‎, 02-18-10 11:27 PM
    5 Pages
    1 2 3 4 5
    • Replies: 62
    • Views: 6,402
    03-17-13, 12:23 AM Go to last post
  22. Your best 4.X MPG?

    Started by drewsdeville‎, 07-06-09 04:49 PM
    4 Pages
    1 2 3 4
    • Replies: 59
    • Views: 3,419
    09-04-09, 10:23 AM Go to last post
  23. Idle Relearn Debate

    Started by cadillactech‎, 02-01-05 10:54 PM
    4 Pages
    1 2 3 4
    • Replies: 56
    • Views: 4,847
    02-06-05, 06:43 PM Go to last post

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