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: 94,405
    02-24-11, 02:56 PM Go to last post
  2. Sticky Thread Sticky: OBD I codes for 4.x Engines

    Started by DaveSmed‎, 09-20-04 02:50 AM
    • Replies: 0
    • Views: 43,569
    09-20-04, 02:50 AM Go to last post
  3. Sticky Thread Sticky: Safety Safety Safety !

    Started by Stoneage_Caddy‎, 06-11-04 07:53 PM
    3 Pages
    1 2 3
    • Replies: 34
    • Views: 14,031
    12-15-13, 11:54 AM Go to last post
  1. Exclamation Should I flush tranny at 52K????

    Started by Msilva954‎, 03-23-04 08:25 AM
    4 Pages
    1 2 3 4
    • Replies: 49
    • Views: 44,939
    12-19-13, 09:52 AM Go to last post
    • Replies: 14
    • Views: 29,279
    05-17-08, 09:20 PM Go to last post
  2. Symptoms of faulty distributor pick up coil

    Started by mike93‎, 10-24-09 07:55 PM
    • Replies: 10
    • Views: 23,167
    10-26-09, 09:34 AM Go to last post
    • Replies: 9
    • Views: 17,089
    11-07-04, 11:29 PM Go to last post
  3. Question Ignition module failing?

    Started by DFBonnett‎, 11-15-04 08:06 AM
    2 Pages
    1 2
    • Replies: 21
    • Views: 17,074
    06-13-08, 10:34 PM Go to last post
  4. 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: 17,027
    09-19-11, 05:42 PM Go to last post
  5. 4.9 litre engine firing order

    Started by dsulu‎, 06-21-09 09:37 PM
    • Replies: 9
    • Views: 15,161
    07-14-09, 06:32 AM Go to last post
  6. 4.9 performance

    Started by Night Wolf‎, 05-21-03 06:49 PM
    6 Pages
    1 2 3 4 5 6
    • Replies: 76
    • Views: 14,665
    04-02-04, 05:16 PM Go to last post
  7. 1994 Cadillac Deville High Idle

    Started by soulman07‎, 10-15-08 09:40 PM
    2 Pages
    1 2
    • Replies: 29
    • Views: 14,045
    03-01-10, 02:26 PM Go to last post
  8. Cadillac Deville 4.9l Engine Problem

    Started by beveluv‎, 11-15-09 05:14 PM
    3 Pages
    1 2 3
    • Replies: 40
    • Views: 13,883
    12-08-09, 09:36 PM Go to last post
  9. Question What's so great about the 4.9 engine?

    Started by BeelzeBob‎, 05-18-03 11:44 AM
    3 Pages
    1 2 3
    • Replies: 41
    • Views: 11,817
    04-15-08, 01:16 AM Go to last post
  10. HT4100 Check In

    Started by caddeville‎, 06-07-06 04:03 PM
    5 Pages
    1 2 3 4 5
    • Replies: 74
    • Views: 11,413
    02-24-10, 12:51 AM Go to last post
  11. What is the BEST MOTOR FLUSH out there?

    Started by caddeville‎, 02-28-06 02:49 AM
    2 Pages
    1 2
    • Replies: 23
    • Views: 10,904
    07-06-12, 03:34 AM Go to last post
  12. The DIY Injector Test Bench

    Started by Sevillian273‎, 04-10-10 08:45 PM
    • Replies: 11
    • Views: 10,434
    06-20-10, 07:58 AM Go to last post
    • Replies: 80
    • Views: 10,211
    10-08-13, 10:05 PM Go to last post
  13. 5W-30 Vs 10W30 for the cold winter?

    Started by Matthew‎, 10-13-04 11:17 PM
    • Replies: 6
    • Views: 9,689
    10-15-04, 02:03 PM Go to last post
  14. 1985 Eldorado 4100 engine swap

    Started by mrboots54‎, 08-26-09 10:18 AM
    • Replies: 11
    • Views: 9,461
    04-11-14, 04:07 PM Go to last post
    • Replies: 5
    • Views: 9,297
    02-05-10, 07:29 PM Go to last post
  15. Smile 4.9l V8 Sfi Ohv 16v

    Started by Walt‎, 12-15-03 05:19 AM
    2 Pages
    1 2
    • Replies: 25
    • Views: 9,186
    02-18-13, 05:26 PM Go to last post
  16. Life expectancy for 4.9 and 4T60E

    Started by 100‎, 08-13-06 11:10 PM
    4 Pages
    1 2 3 4
    • Replies: 54
    • Views: 9,172
    12-22-07, 05:34 PM Go to last post
  17. 4.9 Vs Northstar

    Started by SoundAdvantage‎, 04-30-04 06:36 AM
    3 Pages
    1 2 3
    • Replies: 41
    • Views: 9,118
    04-12-08, 03:06 PM Go to last post
  18. 4.9 Serpentine Belt

    Started by Gary Tayman‎, 05-09-03 06:22 PM
    • Replies: 6
    • Views: 8,879
    09-16-05, 12:35 AM Go to last post
  19. Boosting HT4100 Performance

    Started by DrDave‎, 02-21-05 05:50 AM
    2 Pages
    1 2
    • Replies: 24
    • Views: 8,751
    02-15-12, 02:11 PM Go to last post
    • Replies: 2
    • Views: 8,693
    05-29-10, 07:40 PM Go to last post
  20. 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: 8,655
    11-30-05, 04:42 PM Go to last post

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