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TSP PRC 2.5 5.3 heads + 228R Cam

This is a discussion on TSP PRC 2.5 5.3 heads + 228R Cam within the Internal Engine forums, part of the LSx Technical Help Section category; Welp my car is done. Thought id share since this place has been a ghost town lately. Enjoy....

  1. #1

    TSP PRC 2.5 5.3 heads + 228R Cam

    Welp my car is done. Thought id share since this place has been a ghost town lately. Enjoy.





  2. #2
    Veteran 0rion's Avatar
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    98 Formula
    06 duramax

    nice flat torque curve.....explains why these cams are so good on the street. I've never dyno'd mine but I have the same set up as you on a stalled a4.

  3. #3
    Member goof4080's Avatar
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    Red, Black
    98 T/A M6, 79 T/A 6.6L

    Nice! This is the exact package I have been contemplating for awhile. What LSA are you running? Any other running driving or idle vids?

    Thanks for sharing

  4. #4
    Its on 112 LSA. Heres an idle clip and the second dyno video.

    Last edited by Mike0202; 05-08-2013 at 08:39 AM.

  5. #5
    Member wicked1's Avatar
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    Black
    1999 Trans Am

    Just a quick question. Did you change the rod bolts? Ive heard if you have a 98-99 ls1 you need to upgrade the rod bolts. I have a 99 and don't really want to go through that. Sweet car by the way. Sounds really good.

  6. #6
    Quote Originally Posted by wicked1 View Post
    Just a quick question. Did you change the rod bolts? Ive heard if you have a 98-99 ls1 you need to upgrade the rod bolts. I have a 99 and don't really want to go through that. Sweet car by the way. Sounds really good.
    Thanks. I am not sure on the rod bolts but I am sure someone on here could answer that. If not my car was built / tuned by Slowhawk Performance. You could send him a message. He responds very quick because the message goes right to his I Phone.


    Did anyone find it interesting that it did 414/383 on the Mustang dyno and 414/387 on the Dyno jet?

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