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Thread: New add-ons for the engine

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  1. #1
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    Bought a few recycled parts to add to the LS1 5.7L in my truck.....and some new parts for the install

    2002 LS1 head with 8k on them
    Comp Cams 918 valve springs
    LS6 titanium valve spring retainers
    used low mileage LS6 roller lifters
    New LS6 HD cam chain and follower
    a full set of LS1 stock pushrods
    7.400" thunder racing .080 pushrods -1....could use one 7.4" TR pushrod if someone has a spare.
    valve covers, rocker arms, coil mounts and all coils from the 2002 LS1
    Lingenfelter Performance Engineering cam
    duration
    specs... 261/277
    208/224 at .050" lift
    .554/.567
    117 degrees lobe seperation angle

    I plan on cleaning up the ports on the heads before putting them on the engine, blend the seat to the casting, polish the ports and smooth the valve guide bosses to help the flow a little. I'm trying to decide if I should have the heads shaved .050" to raise compression or just use the Thunder Racing push rods. Since the cam has a .050" smaller cam profile, this has me thinking shaving. Is it .050" on the diameter or is it per side? I can mic/measure the one that is out already but don't know the factory stock size on my factory stock cam size.

    I can't wait to see if this helps me just a little bit.

    BTW...mine has the stock 98 LS1 perimeter bolt cover heads instead of the center bolts.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  2. #2
    Join Date
    Mar 2003
    Location
    San Antonio, TX
    Posts
    11,038
    How did the parts turn out? Seems like a lot nice mods to install.

    later,

    allen

  3. #3
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    I am going to start on the upgrades after the new years. I have been focusing on the 4/6 slam. I did McGaughy's 2" drop spindles, 2" drop coils, Belltech 6" flip kit in the rear, Toxic shocks all around. Just finished up the install tonight with the new shocks. The Escalade front clip is installed but I still have to get it painted. I had a painter lined up but he failed to perform for three weeks so I yanked the truck back. I got one lie after another and got tired of getting the run-around.

    I found that when doing the notching of the frame for the flip kit, an abrasive 5" cutoff wheel on my 4-1/2" angle grinder made short work of cutting the frame pieces off. It also came in handy to clearance the lower control arms for the 18 x 9.5" wide wheels. To say the least, those 275/40/18 tires make the truck corner like it's on rails.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

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