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Thread: Got the truck dynoed after the cam swap

  1. #1
    Join Date
    Oct 2003
    Location
    LaPorte TX
    Posts
    835
    well I went to a dyno GTG from the DTW site. They had invited me to join them over at Flat Rate Performance in Pearland.
    still havnt got any tuning done for the cam havnt had time.
    but I was well please with the numbers, on just a cam swap, and no tuning

    old dyno numbers before the swap where
    HP = 258.2
    TQ = 253.4

    this was at 91.4*F 30.17-0.90 in.Hg. 0ft. CF=1.01 rpm/mph = 78
    new numbers, after the cam swap.... no tuning except for just to get it running.
    HP = 268.3
    TQ = 325.5

    this was at 95.6*F 29.94-0.76 in.Hg. CF=1.02 rpm/mph 47.05

    I also got the MPH recorded on the dyno.
    max MPH was 148MPH

    the Dyno was a DynoJet dynometer.

    I am very happy with these numbers. and believe 13's are in reach on all motor
    I will be making a trip to Allen in a few weeks to get it all worked out

    1999 Pewter Z28
    Sold - 2001 Onyx Black Silverado Stepside "Thunder"

  2. #2
    Join Date
    May 2004
    Posts
    658
    Not bad on the HP but DAMN look at that TQ!!!! 72.1 ft/lbs ...Zed
    13.920 @ 98.94mph...[/b]

  3. #3
    Join Date
    Aug 2004
    Location
    atlanta
    Posts
    32
    What cam is that? That's great on the tq

  4. #4
    Join Date
    Oct 2003
    Location
    LaPorte TX
    Posts
    835
    it's a thunder racing cam.
    224/224
    I thinking the 325 might have been a spike, the graph jumps around pretty good at the end. but thats what it recorded on an all gear pull.
    I had to manually shift from 1st to 2nd, and the 2nd to 3rd, and 3rd to 4th, to make that run.
    when I let the computer shift it. my HP stay aprroximatly the same but the torque came down to 278.2 ft. lbs
    still thats a 25 ft lb jump. with just a cam swap.

    1999 Pewter Z28
    Sold - 2001 Onyx Black Silverado Stepside "Thunder"

  5. #5
    Join Date
    Aug 2004
    Location
    atlanta
    Posts
    32
    What else do you have to change when you do a cam swap. I'm gonna put the stock ls1 cam in just need to know what else is needed.
    Thanx

  6. #6
    Join Date
    May 2004
    Posts
    658
    Originally posted by litllered 4.8@Aug 28 2004, 11:37 PM
    What else do you have to change when you do a cam swap. I'm gonna put the stock ls1 cam in just need to know what else is needed.
    Thanx
    Hope this works for ya Cam Swap Page just print this out get all your gaskets and new bolt, some antifreeze and some time and dive into it. I got the gasket and all at the local stealership for about 40 bucks...Zed
    13.920 @ 98.94mph...[/b]

  7. #7
    Join Date
    Aug 2004
    Location
    atlanta
    Posts
    32
    So that looks like springs retainers and possibly pushrods. Would 918 srpings work? A guy in here has a set for sale.
    Thanx storm with that I think I'll try the install myself.

  8. #8
    Join Date
    Aug 2004
    Location
    Magnolia, TX
    Posts
    3,259
    Originally posted by 01Thunder@Aug 28 2004, 11:17 PM
    it's a thunder racing cam.
    224/224
    I thinking the 325 might have been a spike, the graph jumps around pretty good at the end. but thats what it recorded on an all gear pull.
    I had to manually shift from 1st to 2nd, and the 2nd to 3rd, and 3rd to 4th, to make that run.
    when I let the computer shift it. my HP stay aprroximatly the same but the torque came down to 278.2 ft. lbs
    still thats a 25 ft lb jump. with just a cam swap.
    Those are some good numbers bro. But don't get upset when you get on a "REAL DYNO" and drop a few numbers. BUT, still great numbers.....When are we going to run them????

  9. #9
    Join Date
    Oct 2003
    Location
    LaPorte TX
    Posts
    835
    if we run it will be on all motor.
    dont run on the funny gas
    we will be having another gtg on the 26 out at HRP

    1999 Pewter Z28
    Sold - 2001 Onyx Black Silverado Stepside "Thunder"

  10. #10
    Join Date
    Jun 2003
    Posts
    713
    hey i want to go to hrp again friday night--sept/3/2004. anybody up to it.
    04 supercrew 5.4 3 valve-magnaflow catback



    formerly 02denali 12.79@107

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