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.

350 or 383?

Discussion in 'The Garage' started by pismorat, May 25, 2005.

  1. pismorat

    pismorat 1/2 ton status

    Joined:
    Oct 29, 2002
    Posts:
    540
    Likes Received:
    2
    Location:
    California
    Would you recommend a 350 or 383? Either would have to be rebuilt. It'd go in a shortbed p/u and is mainly an off-road vehicle. I want as much power as possible, but also want reliability. Any advice is welcome. I am trying to figure out what direction to start in. This will be replacing my un-fixable 406. Thanks.
     
  2. backcountry

    backcountry 1/2 ton status

    Joined:
    May 27, 2004
    Posts:
    916
    Likes Received:
    0
    The more cubic inches you have generally the more power you will have both in hp and torque!

    The more power you produce the more stress you introduce.

    I believe a 350 would be more reliable. The 350 has been around forever and is very reliable. The 383 on the other hand has not been around near as long.
     
  3. beater_k20

    beater_k20 Banned

    Joined:
    Dec 9, 2003
    Posts:
    10,276
    Likes Received:
    0
    Location:
    Elkhart, IN
    regardless of displacement, a small block Chevy, is a small block Chevy. a 350 will be no more reliable than a 383. where you run into reliability issues is when you start overbuilding the engine.
     
  4. SUBFAN

    SUBFAN 1/2 ton status

    Joined:
    Mar 23, 2003
    Posts:
    2,334
    Likes Received:
    0
    Location:
    Davenport, Ia
    Power per dollar, a 383 is a very cost effective way to go...The torque increase is what you will notice the most.

    What went wrong with the 400????
     
  5. backcountry

    backcountry 1/2 ton status

    Joined:
    May 27, 2004
    Posts:
    916
    Likes Received:
    0
    Since you are using a 400 crank and therefore increasing the stroke to produce 383 cubic inches; the rods swing further. This increases the working angle. It has the potential to cause the pistons to scuff/bind so to speak.

    When you do this modification you are removing metal from the block to allow for clearances. I would think that if you are to remove material, it has the potential of weakening the overall structure. :dunno:
     
  6. MTMike

    MTMike 1/2 ton status

    Joined:
    Feb 10, 2005
    Posts:
    2,992
    Likes Received:
    0
    Location:
    Billings, Montana
    There's more involved with building a 383 over a 350, but after owning both, I must say that the 383 is much more enjoyable.
     
  7. beater_k20

    beater_k20 Banned

    Joined:
    Dec 9, 2003
    Posts:
    10,276
    Likes Received:
    0
    Location:
    Elkhart, IN
    actually very few people use stock 5.565" rods in a 383. so you're actually going with a longer rod and lowering the "working agle" a good quality piston, rings, and a properly sized bore will eliminate and problems with the scuffing and binding of pistons.

    when clearancing the block, you're removing material from areas that dont really see stress anyways, so the "weakening of the structure" goes unnoticed.

    very few people who have CORRECTLY built a 383 have experienced problems in either of these areas. shortcutting things leads to problems.
     
  8. pismorat

    pismorat 1/2 ton status

    Joined:
    Oct 29, 2002
    Posts:
    540
    Likes Received:
    2
    Location:
    California
    Wow, thanks! Great information. I'm leaning towards doing the 383 now. Is it better to buy a stroker rotating assembly as a kit, or piece one together? I want to do it right, and I'll wait till I get the money to do it right! Thanks again!
     
  9. backcountry

    backcountry 1/2 ton status

    Joined:
    May 27, 2004
    Posts:
    916
    Likes Received:
    0
    If you are not that familiar with what you are ordering; it would be better if you ordered a kit in my opinion! :thumb:
     
  10. fatboy

    fatboy 1/2 ton status

    Joined:
    Jul 1, 2003
    Posts:
    290
    Likes Received:
    0
    Location:
    Tennesse
    here is what I used 383 I have only rebuilt a few so I took this to a well know machine shop and had them put together the short block for me. Not one problem. I think I spent close to 4000 for the machine work and assemble plus the kit. I called powerhouse and they taylored the kit to what I wanted with no hassel I went with the long rod and hyperutetic pistons and a steel crank. Good luck with your plans :)
     
  11. Jonny-K5

    Jonny-K5 1/2 ton status

    Joined:
    May 27, 2003
    Posts:
    1,654
    Likes Received:
    0
    Location:
    SoCal
    i'd say 383 for you application. and i think getting a GM crate HT 383 would be the best/easiest way to go about it.
     
  12. theitalian404

    theitalian404 Registered Member

    Joined:
    May 7, 2005
    Posts:
    75
    Likes Received:
    0
    Location:
    Georgia.
    if your on a budget and need a new motor...look into summit racing..they have a boatload of motors. My friend bought a crate 350 like 5 months ago..for under $2000.
     

Share This Page