Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

superchargers

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by masochist, May 17, 2000.

  1. masochist

    masochist Newbie

    Joined:
    May 17, 2000
    Posts:
    3
    Likes Received:
    0
    does anyone make a supercharger for an 87 with a 350? it seems as if most kits start with the 88 model year.

    i've installed headers, hi-flow cat, flowmaster exhaust, computer chip. trans was just rebuilt. it moves well enough, but i'm still looking for more.

    thanks
     
  2. chaka73

    chaka73 1/2 ton status

    Joined:
    Feb 17, 2000
    Posts:
    377
    Likes Received:
    0
    Location:
    Southern California
    sounds like you want to build a racing Blazer, are you??? that'll be cool.

    LOVE MY GREEN GIANT!!!
     
  3. Truckfan2

    Truckfan2 1/2 ton status

    Joined:
    Apr 10, 2000
    Posts:
    343
    Likes Received:
    0
    Location:
    Northern IL
    The reason they're not for '88s and below is because of the pulley/belt setup. In '89 (I'm pretty sure) Chevy put cast aluminum accesory backets on the engines and making it a surpentine belt setup (that's what I have). You could very well go with a Super Charger by getting a factory surpentine belt setup from a j/yard and putting it on the '87 or you could go with an aftermarket bracket system like MARCH Performance. A SC is a costly setup though... I want one when I ecumulate enough $$. That answer it??

    NEVER been stuck... *yet*
     
  4. bablazer73

    bablazer73 1/2 ton status

    Joined:
    Apr 4, 2000
    Posts:
    3,363
    Likes Received:
    0
    Location:
    upstate ny
    if you use the pulley's and brackets from a pickup/blazer thats the newer serp belt. it will go on. You should be able to find one in a junk yard and take all the parts.

    your right. I don't understand the jeep thing!
     
  5. Truckfan2

    Truckfan2 1/2 ton status

    Joined:
    Apr 10, 2000
    Posts:
    343
    Likes Received:
    0
    Location:
    Northern IL
    ahhh, that's what I said but it's stated a little clearer.

    NEVER been stuck... *yet*
     
  6. masochist

    masochist Newbie

    Joined:
    May 17, 2000
    Posts:
    3
    Likes Received:
    0
    ok. i'll look into it. thanks so much.
     
  7. jarheadk5

    jarheadk5 1/2 ton status

    Joined:
    Mar 6, 2000
    Posts:
    4,389
    Likes Received:
    0
    Location:
    PA
    If you're seriously considering a blower, you should be thinking drivetrain upgrades FIRST...a blown 350 with all the goodies you already have will probably grenade the 10-bolt rear the first time you drop the hammer. Just my 2 cents...

    [​IMG] Semper Maintenance!
     
  8. White Knight

    White Knight 1/2 ton status

    Joined:
    Feb 17, 2000
    Posts:
    889
    Likes Received:
    0
    Location:
    Ft Worth,Texas
    Also with the supercharge comes a host of little things that have to be maintained with little or no tolerance, with all that air/gas going in everything has to be perfect or not only will you grenade the 10 bolts, that new 350 with all the goodies will look like a small thermonuclear explosion. Good luck and I hope it all works out!

    <font color=blue>White Knight</font color=blue>

    <font color=green>May the dirt rise to meet you and the wind be at your back always</font color=green>[​IMG][​IMG][​IMG]
     
  9. Truckfan2

    Truckfan2 1/2 ton status

    Joined:
    Apr 10, 2000
    Posts:
    343
    Likes Received:
    0
    Location:
    Northern IL
    yeah, the fuel... HIGH OCTANE FUEL that is. Fuel is getting mighty expensive and a supercharger in a K5 is going to be alot more than just money to beef up the drivetrain.

    NEVER been stuck... *yet*
     
  10. Andreas

    Andreas 1/2 ton status

    Joined:
    Feb 17, 2000
    Posts:
    188
    Likes Received:
    0
    Location:
    Sweden
    Aha ! So now we´re two [​IMG] I was thinking of putting a small blower on my 406. Like a 4:71 or a 6:71, gear it very mildly at first and just fiddle around until I get it right. Problem is you have to build your engine around the blower and not the other way around. A blower will spin the bottom right out of your stock engine because it´s boost provides almost instantaneous massive power. And ofcourse you´ll have to lower your compression to 7-8:1. Onwards to the tranny...rebuild? Yep ! Next, a np205 would be in order. Same goes for axles. I wouldn´t go with anything less than a Dana 60. Still, a Blower Blazer would be a sight for sore eyes[​IMG] and I haven´t given that idea up yet. Someday it´ll happen !!

    Andreas

    406cui of pure sh*t[​IMG]
     
  11. jarheadk5

    jarheadk5 1/2 ton status

    Joined:
    Mar 6, 2000
    Posts:
    4,389
    Likes Received:
    0
    Location:
    PA
    Oh yeah, there's no doubt it would be cool! I'd love to be able to do it right...it would be a blast to pull some 2000 lb. rice-rocket's punk card at a stoplight with my 6000+ lb. bada$$ Blazer![​IMG]
    Of course, I'd need to scrape up about $10,000 or so to make this happen reliably, so it will continue to be a nice fantasy...[​IMG]

    [​IMG] Semper Maintenance!
     
  12. Andreas

    Andreas 1/2 ton status

    Joined:
    Feb 17, 2000
    Posts:
    188
    Likes Received:
    0
    Location:
    Sweden
    Well, 10 grand would definitly cover it...along with gas money for a long time[​IMG]. Weiand/Holley has a complete smallblock 6:71 blower "kit" for around $2300 I think ?? Add some ARP bolts in the bottom (crank) and new low comp pistons. I´d say you could get away with...$5000 maximum (including tranny, tcase and axles). Still a lot of dough[​IMG]. Another expense would be all those tires you burn out ´cause with a blower NOTHING will stop it from blasting your rear wheels to hell (assuming you go 2wd.....with 4wd you´d probably suffer from whiplash everytime you step on it[​IMG]). Yeah, I definitly want one[​IMG]

    Andreas

    406cui of pure sh*t[​IMG]
     
  13. BurbinOR

    BurbinOR 3/4 ton status

    Joined:
    Feb 17, 2000
    Posts:
    5,829
    Likes Received:
    0
    Location:
    Oregon
    When I was shopping for my current K5 about 5-6 years ago, there was one for sale in Gresham , OR that had a blower on it. Looked it over, it was a sweet truck, no negatives, so I asked for a test drive. MAN, I thought my old 75 with the 454 had torque. THIS thing pulled like a freaking rocket ship. Only reason I didn't end up buying it was it had an 8" lift and 38" tires..........guy did it right, changed the gears to 4.88's.........at that point I needed it to be a daily driver, and my wife (yep, I am a scared married guy, like many of ya!) told me if I came home with a monster truck I could sleep with it from now on.......and this blower motored Blazer was a monster from day one. TODAY (with a Bonneville as a daily driver) I would DEFINITELY bought it..........you think a Rat has torque, this 350 with a blower flat stuck me back in the seat, with 38"'s for chrissakes.

    '79 - 406 w/IROC TPI - K5#5 - a <font color=orange>sickness[​IMG] <font color=blue>you never get enough of!! [​IMG]
     
  14. Andreas

    Andreas 1/2 ton status

    Joined:
    Feb 17, 2000
    Posts:
    188
    Likes Received:
    0
    Location:
    Sweden
    YEAH !! That´s what I want !! Imagine going in low 4wd between the stoplights in the city, race with Porches and win all the time[​IMG] In low 4wd you get the traction and acceleration from hell. Built and geared right I guess it would go 0-60 in 3-4 seconds.

    Andreas

    406cui of pure sh*t[​IMG]
     
  15. dumbfounded

    dumbfounded 1/2 ton status

    Joined:
    May 20, 2000
    Posts:
    176
    Likes Received:
    0
    Location:
    Castalia, NC
    Well I feel I could ad a litte..... Go for it do what it takes a stock engine will hold up to about 6 psi for a while. I have a corvette for a while and I used to street race and go to the strip to eat 5.0's (I hate those things) Well my point is if you have the money for the super charger do it but be leary of other parts breaking due to the gain you want to play you've got to pay. But look at it this way if something breaks fix it stronger an soon enough it will be bullet proof right. As for the belts that is why yours isn't listed as a kit but if you go to a carb set up with a 6-71, or 8-71 it's pully bolts on the outside of the main pully, also a 6-71 with a carb may take a small hood scoop for clearance.......

    Blood, sweat, tears, and lots of money is what keeps the k5 alive.
     
  16. Balou

    Balou 1/2 ton status

    Joined:
    Apr 15, 2000
    Posts:
    207
    Likes Received:
    0
    Location:
    back to Germany
    make sure your floor ist rust-free and your driverseat
    is welded in properly when you go for that 4L blow-job,
    hehehehehehehe !!!

    Balou
    '79 K5,350,465,205
    [​IMG]"Size DOES matter!!!" said the girl last night [​IMG]
     
  17. Andreas

    Andreas 1/2 ton status

    Joined:
    Feb 17, 2000
    Posts:
    188
    Likes Received:
    0
    Location:
    Sweden
  18. masochist

    masochist Newbie

    Joined:
    May 17, 2000
    Posts:
    3
    Likes Received:
    0
    damn, i thought this was going to be easy. i certainly am no mechanic. compression ratios?
    i don't plan on racing, just wanted to have the power available (especially to squash some rice burner). sure, i might abuse it if i had it. i don't have money to burn, but i do need my toys. i was favoring the vortech supercharger over the roots type such as the holley and weiand. just some advice from my friend art carr who used to race, and is known for his transmissions. i'd be lost in a junk yard, and rely instead on my local mechanic who appreciates cash payment. i appreciate all the replies. anyone favor one type of supercharger over the next?

    i didn't realize there was so much to consider.
    thanks for helping in my decisions
     
  19. James90

    James90 1/2 ton status

    Joined:
    May 18, 2000
    Posts:
    986
    Likes Received:
    0
    Location:
    Rocky Mount NC
    I would like to put one on mine I just dont have the green stuff to get it and do all the mods it would need.

    I hope you can get one and the pulleys you need. It would be really cool to see one on a k5. best of luck with it!

    Go prepared, To go every where
     
  20. jarheadk5

    jarheadk5 1/2 ton status

    Joined:
    Mar 6, 2000
    Posts:
    4,389
    Likes Received:
    0
    Location:
    PA
    I think I read somewhere that the centrifugal blowers (Vortech, Paxton, etc.) are much more civilized for the street, whereas the Roots-type blowers (B&M, BDS, Holley, etc) are the wild animals. Someone please correct me if I'm wrong here.

    [​IMG] Semper Maintenance!
     

Share This Page