Upgrading to a 383 stroker - short block recommendation needed

Discussion in 'Engine Topic' started by jzest71, Jun 10, 2020.

  1. jzest71

    jzest71 New Member

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    Looking at shops for a short block. First phase is to upgrade to a 383 short block. I'd like to continue using my current top end components which are stock double hump heads, and an Edelbrock manifold with a 650 cfm carb. Heads have upgraded springs, threaded studs, guides, and roller rockers for use with a Lunati roller cam (.476/.504). Would like compression to be 10.2:1. Future upgrades would be aluminum heads & EFI. I've had conversations with Raptor Engines in Portland, OR. Others I've looked at are CNC Motorsports in SD, Skip White Performance in TN, and CME in SC. Any feedback on these shops? As is typical, I'm on a budget build. Recommendations?
     
  2. muscl car

    muscl car Veteran Member Lifetime Gold Member

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  3. Scaleytail

    Scaleytail Veteran Member

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    Very happy with my Blueprint 383.
     
  4. kenny77

    kenny77 Veteran Member Lifetime Gold Member

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    I bought a new GM ZZ383 shortblock, and new High Lift Vortec heads. All from Scoggin Dickey. I'm at 10.3 to 1. More like 9.8 to 1 probably with my old school head gaskets.
    It's kinda a one stop shop, no excuses, no bulls--t GM performance dealer in Texas. It's up to you if you want to Roll-The-Dice with some of those places, I didn't.
    https://sdparts.com/?gclid=EAIaIQobChMI0LaSp8_66QIVkIbACh3rNgjNEAAYASAAEgJWZfD_BwE

    The cost of Machine Shop work in South Florida is stooopid. They don't want to be bothered. This was a way better way to go for me.
     
    Last edited: Jun 11, 2020
  5. kenny77

    kenny77 Veteran Member Lifetime Gold Member

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  6. Lowend

    Lowend Administrator. .a car, a man, a maraca. Staff Member Lifetime Gold Member

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    Conventional Camel-Hump heads have 64cc combustion chambers. So a conventional 383 with flat-top pistons (with 5cc valve reliefs) will be ~ 10.6-1
     
  7. CorkyE

    CorkyE Veteran Member Lifetime Gold Member

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    They've probably been machined flat several times, so you're likely to have more compression than 93 pump gas can handle. Also, that old head technology just will not flow what a 383 needs. You might pick up some torque on the low end, but they'll run out of steam way before the engine does. If what you have is still running, keep it running while saving for a more complete updated engine package. IMHO
     
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  8. 2ndGenCrazy

    2ndGenCrazy Veteran Member

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    CorkyE Very good advice...
     
  9. kenny77

    kenny77 Veteran Member Lifetime Gold Member

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    I've seen way too many examples of Vortec heads just blowing all the old school re-worked stuff away on the street
     
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  10. 1980RS

    1980RS Veteran Member

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    Try Ohio Crankshaft, I hear their stuff is pretty good for the price.
     

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