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383's y'all keep talking about

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by newyorkin, May 10, 2001.

  1. newyorkin

    newyorkin 1 ton status

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    383\'s y\'all keep talking about

    I've been a Chevy guy all my life, but I stopped paying close attention after the '80's (it's the hairstyles I miss most).
    When did Chevy build a 383? The Chevy's I'm real familiar with are 305/327/350/400/454. When was the 383 introduced? I'm guessing you're not talking about the Chrysler 383 (just a hunch)... I guess it's real similar at the top end to a 350, too, if I'm reading everything on the board right?

    Ratch
    I could swear there was a trail around here... Right around where those new condos are...
     
  2. lehtola

    lehtola 1/2 ton status

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    Re: 383\'s y\'all keep talking about

    350 block with a 400 crank.

    1990 GMC Jimmy 350/TH700R4/NP241/10 bolts, 4" skyjacker lift, 35x12.50R15 BFG All Terrains on 15x10 AR Baja's, Flowmasters.
     
  3. Blazer79

    Blazer79 1/2 ton status

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    Re: 383\'s y\'all keep talking about

    Check out http://www.summitracing.com These guys carry a "stroker" kit. It includes a modified 400 SBC crank that fits in a 350 block, longer 5.7" rods, pistons and all the usual stuff. It boosts your engine's torque. 383 stroker + TPI fuel injection is the perfect formula for torque. This was my plan...until a 454 got in my way [​IMG].

    <font color=blue>//////
    <A target="_blank" HREF=http://blazer79.coloradok5.com>http://blazer79.coloradok5.com</A>
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  4. ftn96

    ftn96 1/2 ton status

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    Re: 383\'s y\'all keep talking about

    Newyorkin, Chevy didn't really introduce the 383. I think it was all the Chevy gear heads figured out that you can stick a 400 crank in the 350's and with the extra length of the stroke gives you tremendous, enormous, gigantic TORGUE!!!!!!!!

    Will work for beer, parts and tools.
    90-350TBI-TCI700-241-33"-10/12 bolt w/4.10's,
    <A target="_blank" HREF=http://www.nashvillek5.freeservers.com>http://www.nashvillek5.freeservers.com</A>
     
  5. newyorkin

    newyorkin 1 ton status

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    Re: 383\'s y\'all keep talking about

    Do the 350 heads need to be modified to make it all come together? Is it as simple as taking my 350, swapping out the crank for a 400, and leaving all else the same?? If so, why NOT do it???

    Ratch
    I could swear there was a trail around here... Right around where those new condos are...
     
  6. muddin4fun

    muddin4fun 3/4 ton status

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    Re: 383\'s y\'all keep talking about

    There is a lot of machining to get that crank to fit. It's almost cheaper to buy the complete motor from a parts store. If you take a 350, rebuild it, machine it for the crank, do all the head work and such..3500 is about what it'll cost you and you can get a complete 383 from a parts store for less.

    [​IMG]
    <A target="_blank" HREF=http://k5chevyblazer.homestead.com/home.html>http://k5chevyblazer.homestead.com/home.html</A>
     
  7. Triaged

    Triaged 1/2 ton status

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    Re: 383\'s y\'all keep talking about

    You can get a stroker kit from many places. The difficult part is clearencing the block for the longer stroke. Also sometimes (depending on length and type of con rod) you need a small base circle cam.

    '71 Blazer CST with alot of rust
     
  8. CaptCrunch

    CaptCrunch 1/2 ton status

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    Re: 383\'s y\'all keep talking about

    383's usually like a step up from the stock 350 heads. These things usually choke even a 350, none the less a 383. I have had excellent results on budget ones with the sportsman II heads. The powerhouse 383 in my friend's camaro I built has Brodix Track ones... awsome heads. I guess GM and others have been using the vortech heads... I think I'd personally like a little bigger ports to move the power up in the power band. Vortechs run out of gas at about 4000 or so, but they would give awsome torque down low. A few years ago one the dyno at a race shop I do business with and know they got a 355 chev w/ totally stock vortechs heads to make nearly 550 hp. It was 13 to 1 compression and built up, but they didn't touch the heads. This was probably 3 or 4 years ago. If I go that route w/ my truck I'll probably go Vortech heads since It will probably never hit 4 grand.

    [​IMG]
    1987 Chevy K5 Blazer- 350 TBI
     
  9. muddin4fun

    muddin4fun 3/4 ton status

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    Re: 383\'s y\'all keep talking about

    Hey capt....when it come's 'round to it...would ya give me some ideas for what I should put on top of my 383?

    BTW: I would still like for it to be able to pass the gass pump...LOL!

    [​IMG]
    <A target="_blank" HREF=http://k5chevyblazer.homestead.com/home.html>http://k5chevyblazer.homestead.com/home.html</A><P ID="edit"><FONT SIZE=-1>Edited by muddin4fun on 05/11/01 10:31 AM (server time).</FONT></P>
     
  10. CaptCrunch

    CaptCrunch 1/2 ton status

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    Re: 383\'s y\'all keep talking about

    LOL... I hear ya Boss Muffin! I'd be glad to let anyone know what kinda dyno #'s their componets are doing at my bud's race shop. SBC are kinda the sepciality cause they do a huge amount of engines for the circle track guys. I'll tell ya it is gonna be hard to beat the Vortech heads for a low rpm engine IMO. Davey just customized a site to go on a 400 for the owner's truck that tows his race car. Not sure of all the details on it, but hear that baby turns out nearly 500 ft'lbs at 3500 rpms.

    [​IMG]
    1987 Chevy K5 Blazer- 350 TBI
     

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