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  1. #1

    Default 1987 beast, whats the best engine mod or upgrade outside of ls swap

    What's the best mod to the motor.. Is there a tbi to efi bolt on. Or is the only real option is to do a complete swap
    Attached Thumbnails Attached Thumbnails IMG_0357.jpg   IMG_0356.jpg   IMG_0331.jpg   IMG_0325.JPG  

  2. #2
    Jr. Mechanic
    Join Date
    Mar 2013


    havent looked in a while,does holley still make proinjection,check their site,nice truck by the way!,to me,cylinder heads are the hidden jewel,check out summit,edelbrock,p.a.w and others

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    just looked at pics again,im jealous

  3. #3


    THanks man,, I thought about heads,, I can find ls1 motors and sometimes trannys for less than 2k. I'd hate to go with heads and other upgrades like long tube headers then realize i wish i would have went ls1,,, by the way I have pulled the interior and changing the red to a black leather dark grey suede combo....

  4. #4

    Enkeiavalanche's Avatar
    Join Date
    Apr 2010
    Piermont,NY, back in Northern NJ now, But may be in IL soon....


    That is SWEET!! I would go 454 Baby!!! Maybe a 427???
    08 Z71 Avalanche Mods to date: K&N CAI,Hellwig Swaybars and End Links, Corsa Sport Exhaust, Superchips Programer,IPCW LOF & 3rd brake light and tails, AMI Gas door,Show Hooks and Door locks, Enkei Wheels, with Pirelli tires, StreetScene Bowties, Grant Steering wheel,Muth signal mirrors,SSBC Big Brake kit,Huskyliner Mug gards,Floor mats and Hood shield, McGard Lug nuts and locks, Bedrug, Cervini's Ram Air hood,35watt HID Fog lights, Sylvania bulbs all around ZXE's Highs and Lows, WhiteNight Back up lights,Sirius and HD Radio, SnugTop sitting on deck now Got a Softopper on now,Tempress Boat Hatches.... New Bilstein shocks are on... New Mods coming soon..... X

  5. #5


    the ideal of 6.0 would be nice, but I would want to get a little better mileage

  6. #6


    Its hard to say exactly... heads, cam, intake, exhaust, ignition,. The issue is that you will not reap the full rewards of just one. If I were to do only one... it would be the cam... followed quickly with an exhaust. Keep in mind... if you change the can you most like will need to rejet the carborator on that year.
    2009 Chevy Silverado 2500HDLT 6.0L w/ Towing Package, Dick Cepek GM8 Rims, Dick Cepek FC II 33X11.50R17,RKSport Ram-Air Hood(Functional), Lazer Lite Aluminum Tonneau Cover, Road Armor Stealth Bumper, PIAA Lighting, Diablo Trinity Tuner, Diablew Custom Tune, BullyDog Cold Air Intake, American Racing Headers w/highflow cats, Corsa Performance Sport Exhaust, Custom Striping, Black Bowties front and rear, Fuel Grille Inserts, Recon Headlights, Readylift Shocks, Readylift Upper Contol Arms, 2" Blocks in the Rear..

    Future Plans: HD Tie Rods, Under hood upgrades, Crower Camshaft and possibly electric fans.

  7. #7


    The more and more I think about it, I'm probably going to just do the ls swap. THe crazy thing is, this truck runs perfectly fine.. I just hate having normal stuff. I'm going to start watching craigslist for a good deal and do the swap in a weekend...Probably do a cam in the ls motor.

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