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My build....421CI

This is a discussion on My build....421CI within the Internal Engine forums, part of the LSx Technical Help Section category; New accessories and Katech tensioner plus ls3 160 thermostat. Sent from my HTC6535LVW using Tapatalk...

  1. #221
    Moderator 98TransAmWs-6's Avatar
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    98 TA WS6/ 01 C5 Corvette



    New accessories and Katech tensioner plus ls3 160 thermostat.

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    1998 Trans Am WS6 - Phantom
    421 CI LQ9, Tick Performance Custom Cam, TFS 255cc LS3 heads, Kooks 2" LT headers, Kooks 3" True Duals w/ high flow cats, FTP 104 lid, Speed Density Tune, 4" silicon tube, LS6 VCT, FAST 102 Intake, NW 102 TB, Oil Catch Can, SLP Bilstein Shocks w/ Vogtland Springs, CTS-V 4-piston Calipers w/C6 Z06 rotors, Stainless Steel Brake Lines, R1 concepts premium rotors, Hawk HP+ brake pads, VFN WSQ Hood, C5-R timing chain, SLP oil pump, E85 tune, Walbro 450 fuel pump, Deatschwerkz 95# injectors, Breathless performance headlights, Frost Tune, !HVAC.
    (Coming Soon) BMR DSL, UMI TQ Arm
    421 LQ9 14.8:1 on E85 Build/

  2. #222
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    Quote Originally Posted by 98TransAmWs-6 View Post
    I have actually decided to switch the internals to K1 technologies stuff (new rod length of 6.125) and using a 4.125 crank to make this a 395 build. I want to use wiseco pistons but I can't seem to find a piston for a 3.905 bore, 4.125 crank, 6.125 rod, and is a flat top between -2.8 and -3.1cc. Without the valve relief my compression is going to be 12.4 which I believe is a little high for pump gas. I can find a wiseco piston just like I need but it is +4cc.
    Have weisco build a set of pistons, not much more. I had them build a custom set for my lsx build a few months back. (Gm bowtie lsx block, 4.155 bore, 4.100 stroke, 444 cid, custom roller cam, T&D shaft mounted rockers, 11.2 compression for pump gas. Holley dominator ecu to fire it off and a long list of other parts. Good luck

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  3. #223
    Moderator 98TransAmWs-6's Avatar
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    The build is pretty much done man lol the engine is for sure. Changed to a 421

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  4. #224
    Moderator 98TransAmWs-6's Avatar
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    98 TA WS6/ 01 C5 Corvette


    My TSP 2" x 3.5" headers came in.



    Semi installed for bumper exits.

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  5. #225
    Spaz is My Mentor SMWS6TA's Avatar
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    Navy Blue Metallic
    98 T/A w/a little mods...


  6. #226
    Moderator 98TransAmWs-6's Avatar
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    I'll need a wide band installed since it doesn't have a bung for it currently I'll probably have that done when the exhaust is fabbed up.

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  7. #227
    Spaz is My Mentor SMWS6TA's Avatar
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    Navy Blue Metallic
    98 T/A w/a little mods...

    I'm currently using Glowshift for my oil temp & fuel pressure gauge. I plan of getting their Elite 10 Series Wideband A/F Gauge, Part # GS-ET02W $174; comes with the following:


    • 1/16th Inch Black Face with Magnified Tinted Lens
    • Gauge Depth Measures 15/16 of an Inch
    • Analog Display Reads from 10.0 to 20.0 AFR
    • Digital 12 Volt Wideband Contoller Unit with Data Logging Output
    • Bosch LSU 4.9 Wideband Oxygen Sensor
    • 13 Foot Sensor Wire Harness
    • 6 Foot Control Unit to Gauge Wire Harness
    • 5 Foot Power Wire Harness
    • Weld-In Sensor Bung
    • Gauge Visor
    • Mounting and Installation Hardware
    • Free Lifetime Technical Support
    • One Year Limited Warranty


    Linear Data Logging Outputs:
    • Linear Narrowband Output: 0 to 1 Volt
    • Linear Wideband Output: 0 to 5 Volts



    When I had a shop weld up my exhaust I had them go ahead and install a bung for the wideband.

  8. #228
    Moderator 98TransAmWs-6's Avatar
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    How my engine bay looks now after dropping the kmember, brakes, power steering, and suspension.



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  9. #229
    Moderator 98TransAmWs-6's Avatar
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    Starting to get my 8.8 build together as well. I sourced the axle tubes from another 10 bolt as well as the Hiltsy mount I'll need.

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  10. #230
    Spaz is My Mentor SMWS6TA's Avatar
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    Navy Blue Metallic
    98 T/A w/a little mods...


  11. #231
    Moderator 98TransAmWs-6's Avatar
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    98 TA WS6/ 01 C5 Corvette

    Pulled the trigger on some race star wheels 17x4.5 front and 15x10 rear.

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  12. #232
    Moderator 98TransAmWs-6's Avatar
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    These came in for me today I'll post pics later.


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  13. #233
    Junior Member Last of the Breed's Avatar
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    2002 Trans Am WS6

    Very nice build sir.

  14. #234
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    Progress of the 8.8 being built

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  15. #235
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    Some more pictures of the 8.8

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  16. #236
    Moderator 98TransAmWs-6's Avatar
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    More work to the 8.8 done and more parts only one more piece left to get.

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  17. #237
    Moderator 98TransAmWs-6's Avatar
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    Well my 8.8 is now finished!

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