Thread: Do you need to upgrad pushrods with XP cam and Ls7 lifters and 130# springs?

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  1. #1 Do you need to upgrad pushrods with XP cam and Ls7 lifters and 130# springs? 
    Donating Users timboku's Avatar
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    Do you need to upgrade your push rods for a xp cam with ls7 lifters and 130# springs on a double roller? If so what is the length with stock rockers and stock heads? 7.050 is stock length zzp sells a 3/8 push rod in 6.95 and 7.00 and recommends it for the heavier springs? I have comp cam 7.050 5/16th push rods in the old motor that I ran with 1.9s. Will those be good enough? Haven't seen any info on pushrods when upgrading a to a cam so just wondering.

    Thanks!
    2002 GTP..DD.. Topswapped Gen V L26, XP cam, Full Size IC, E85, 2.6 Pulley,SD Headers, K&N Intake, N*/Lq4,FP Rewire, TEP Trans, F body Fronts, GXP Rear Brakes, LE Spoiler, AGXs with vogtland springs, bonni gxp rims, Timboku Tuned
    1995 Cutlass Supreme Convertible...Soon to be L32Swapped.....2005 GXP Stock
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  2. #2 Re: Do you need to upgrad pushrods with XP cam and Ls7 lifters and 130# springs? 
    GTP Level Member Javi's Avatar
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    Buy a pushrod lenght checker, measure and order pushrods as necessary.
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  3. #3 Re: Do you need to upgrad pushrods with XP cam and Ls7 lifters and 130# springs? 
    Moderator dsmuts's Avatar
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    I've seen people have to use 6.95" on that setup
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  4. #4 Re: Do you need to upgrad pushrods with XP cam and Ls7 lifters and 130# springs? 
    GrandPrix Junkie CrazyGuy03's Avatar
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    I am in the same boat. I can't do anything until the motor is assembled and I use the push rod measuring tool.
    I was recently informed the 5/16th should be all you need The larger 3/8th rods I was told have trouble in the l32/l26 heads? Not sure if that applies if you are using l32/l26 block and keep the l67 heads
    2003 Buick Regal GSX lots of mods - click here to see latest build - http://www.grandprixforums.net/threa...ld-for-the-gsx

    *For Reference - Does not have a Zack Howard Cam - It's an Intense Stage 3 - Thank You*
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  5. #5 Re: Do you need to upgrad pushrods with XP cam and Ls7 lifters and 130# springs? 
    GrandPrix Junkie SgtMarshal's Avatar
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    I didn't do anything to my pushrods with the same setup except 90 lb valve springs. 5000 miles later no issues.
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  6. #6 Re: Do you need to upgrad pushrods with XP cam and Ls7 lifters and 130# springs? 
    Donating Users timboku's Avatar
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    I will order a pushrod checker as engine is close to being done. Hoping.to reuse these comp stock.height ones. Thanks!
    2002 GTP..DD.. Topswapped Gen V L26, XP cam, Full Size IC, E85, 2.6 Pulley,SD Headers, K&N Intake, N*/Lq4,FP Rewire, TEP Trans, F body Fronts, GXP Rear Brakes, LE Spoiler, AGXs with vogtland springs, bonni gxp rims, Timboku Tuned
    1995 Cutlass Supreme Convertible...Soon to be L32Swapped.....2005 GXP Stock
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