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What cam to get for 408?

This is a discussion on What cam to get for 408? within the Internal Engine forums, part of the LSx Technical Help Section category; ...

  1. #1
    Junior Member Beardws6's Avatar
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    What cam to get for 408?

    Cylinder Head: G III LS1 11 Application: Street / Race
    Port Volume: 240cc Chamber Volume: 35cc to 72cc
    Test Bore: 4.000" Test Pressure: 28.00" Water
    Intake Valve: 2.100" Exhaust Valve: 1.570"

    Valve Lift Intake Exhaust Valve Lift
    .100" 73 57 .100"
    .200" 152 114 .200"
    .300" 210 164 .300"
    .400" 266 204 .400"
    .500" 312 224 .500"
    .550" 327 228 .550"
    .600" 338 231 .600"
    .650" 346 234 .650"
    .700" 320 236 .700"

    Iron 408
    fast 90/90 port matched
    85mm MAF
    85mm lid
    kooks 1 7/8
    vig 3800, 12-bolt 3.73
    A4 Century stage 2 rebuild
    TNT 200 wet shot
    42lb inj
    fast fuel rails
    255 in-tank walbro

    Tell me your thoughts fellas. Motor is being built right now. Just haven`t decided on a cam. I want a BADASS sounding with good power all threw the power band! I want to be able to drive this car daily. Track maybe 8 times ayear. Wife drives the car! Gotta be safe with her, no dieing out!

  2. #2
    Slow'er'Ass Mr. Luos's Avatar
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    Red Tint Jewelcoat
    2008 Trailblazer SS

    Not sure those injectors are going to keep up with the juice.

    I am building a very similar 402. I am running a 248/254 629/622 113. TSP grind.
    2008 Trailblazer SS
    Yank PTB3600, Kooks 1 7/8" LT's, 4" intake, E-fans, Magnaflow, Sonnax kit, tranny cooler, tune.
    Lowered, HID's, tinted.

    1999 Pontiac Trans Am WS.6 #1747 SOLD
    531.1 RWHP 481.3 FT/Pounds all motor.

  3. #3
    Senior Member MadSeason's Avatar
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    1994 POS

    Get a custom grind, usually cost the same as an off the shelf version and can get more power made specifically for your application

  4. #4
    Junior Member Beardws6's Avatar
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    I was thinking the same on a custom grind. Also on the injects, they should be fine. I`m running a dual nozzle TNT wet kit. Thanks, guys!

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