Bextreme04
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    • Bextreme04
      Got a bunch of welding done today. Got quite a bit of the rear put back together. My welding game has improved a bit. Still have some...
    • Bextreme04
      Bextreme04 reacted to riessecup1's post in the thread 241c or stay with the np203 with Like Like.
      Thank you. I figured I read that wrong but I appreciate all the help. I will post what I end up buying in here. It Will probably be...
    • Bextreme04
      Bextreme04 replied to the thread 241c or stay with the np203.
      No, all of the issues and changes were pre-97 where these were installed on 350's, 305's, and v6's. He will want to stay away any early...
    • Bextreme04
      Bextreme04 replied to the thread 241c or stay with the np203.
      The problem is going to be finding a 241c with a passenger side drop. The most likely candidate for you, and the easiest to find, will...
    • Bextreme04
      Bextreme04 reacted to RanchWelder's post in the thread Big Block Bearing inspection... with Like Like.
      Here's what I got coming... Wouldn't be a MT truck without the rodent nest... The mystery is solved... Body looks great leather seats...
    • Bextreme04
      Bextreme04 reacted to Mark Jones's post in the thread 489ci tow build... with Like Like.
      It takes 2 hours porting per head, then the guide and valve job work. Then you're going to have a very responsive high torque engine. My...
    • Bextreme04
      Bextreme04 reacted to Mark Jones's post in the thread 489ci tow build... with Like Like.
      I think a set of 236 peanut ports properly done would the best choice. Depending on your elevation that would dictate the compression. I...
    • Bextreme04
      Bextreme04 replied to the thread Spark plugs.
      the second number is the heat range. Higher number is hotter plug. A CR43TS, CR44TS, and CR45TS will all fit and work in most GM V-8...
    • Bextreme04
      Bextreme04 replied to the thread 489ci tow build....
      Oh, and checking on a compression calculator... my L29 after the rebuild should be ~9.15:1 Static compression ratio and ~8.4:1 dynamic...
    • Bextreme04
      Bextreme04 replied to the thread 489ci tow build....
      Factory L29 and 8.1L are in the 9.0:1 range with the factory fast burn iron heads. You can run ~10:1 very safely on aluminum heads and...
      • Coil pack brackets.jpg
      • Deck height.jpg
      • L29 cam card.jpg
      • l29.jpg
    • Bextreme04
      Bextreme04 replied to the thread 489ci tow build....
      I would stay away from keith black pistons. By the time you acquire and rebuild any of those heads, you could have just bought better...
    • Bextreme04
      After some research I see that they didn't allow the 205 to pair to a TH400 until '79. Super weird. So if you had a TH350 or SM465 from...
    • Bextreme04
      Bextreme04 replied to the thread 489ci tow build....
      I am swapping my 350/TH400 for an L29/4L80. I just bought an entire 1997 K2500 Suburban that had the interior and suspension trashed for...
    • Bextreme04
      Odd to see a 203 paired to a TH400 in a 1-ton. Usually that would have been a 205.
    • Bextreme04
      Ended up grabbing some 2" Dom for the bull bar and some 1/4" 3x4 angle for the goose neck
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