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382 stroker questions

This is a discussion on 382 stroker questions within the Internal Engine forums, part of the LSx Technical Help Section category; I am considering stroking my block. I know stock bore is 3.898. The stroke is increased from 3.622 to 4.000. ...

  1. #1
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    Arctic White
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    382 stroker questions

    I am considering stroking my block. I know stock bore is 3.898. The stroke is increased from 3.622 to 4.000. I am old school DIY, and past 350 strokers you could either by a complete kit $$$, or get a 400 crank, and some different rods and pistons.
    Rather than spending several thousand for a kit, what is out there to piece your own "budget DIY" kit. Does the 4" crank come out of a different motor? What specific rods and pistons are required? Is there anything special that has to be done to the block, like notching for the increased crank as the old 383 chevy small blocks?
    I have been searching for answers, and I have not seen too much technical info out there.

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    230,55,147 91Z28's Avatar
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    You won't find the 4" crank in any engine, you have to buy an aftermarket one.

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    Arctic White
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    is eagle about the best price out there?

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    also, it seems Wiseco has the best usable compression ration, @ 10.8, compared to JE @ 11.3 (LS1 stock is 10.0 and LS6 stock is 10.5)

    where is the place to find good prices
    I have searched ebay, internet sites, and the forums
    very little info out there

  5. #5
    TWISTEDTA
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    hum... I havent heard of a 382

    But a 383 ooh yes! Whats the difference if any?

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    Tech Junkie hammertime's Avatar
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    Quote Originally Posted by jfrc2000
    also, it seems Wiseco has the best usable compression ration, @ 10.8, compared to JE @ 11.3 (LS1 stock is 10.0 and LS6 stock is 10.5)

    where is the place to find good prices
    I have searched ebay, internet sites, and the forums
    very little info out there
    Keep in mind, you'll probably want to upgrade your heads to flow enough air to feed the extra cubes. There are generally several different chamber sizes available to put the compression where you want it. Also, 11.3 with an efficient chamber in an aluminum head isn't too high for pump premium, especially if you are running a long duration cam or tighter lobe separation angle. Proper tuning can make it all work well!

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    Senior Member MadSeason's Avatar
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    I'm running 11.2:1 on stock cubes, but also looking into stroking out to 382, 383, or 395 based on what's avaliable out there while still keeping stock bore

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    Quote Originally Posted by hammertime
    Keep in mind, you'll probably want to upgrade your heads to flow enough air to feed the extra cubes. There are generally several different chamber sizes available to put the compression where you want it. Also, 11.3 with an efficient chamber in an aluminum head isn't too high for pump premium, especially if you are running a long duration cam or tighter lobe separation angle. Proper tuning can make it all work well!
    it is a LS1 block, but I plan to bolt on some stage 2.5 heads, with port work and larger valves, of course. I am considering having a custom grind cam. I cannot have high lift or a very choppy lobe separation, but long duration will not be a problem.

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    Blown, Stroked, & Sprayed

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    Bob @ EPP should be able to answer that.

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    I think you are barking up the wrong tree with the DIY attitude. The companies that make up the kits have probably already looked at the cheapest way they can do it. And they do it is bulk!!

    Lunati and C.O.M.E. both make very good 383 or more stroker kits.

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    Junior Member g.t.o.boy's Avatar
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    Look into scoggin dickey sdpc2000.com for some good price options eagle cranks under 800 and scat rods under 300, they also have piston kits with rings and bearings about 900 totaling 2k, then get your block torque plate honed and cleaned you may want your machine shop to check crank as I have seen many that are not just a drop in from callies to eagle, ls1's can only be honed .005 safely. I believe that Scoggin-Dickey is in tx.

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    they do have some good prices
    even on the little things like gaskets, too
    thanks for the tip

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    Modding is an Addiction bww3588's Avatar
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    Quote Originally Posted by TWISTEDTA
    hum... I havent heard of a 382

    But a 383 ooh yes! Whats the difference if any?
    Stroked LS1= 3.898*3.898*.7854*4.000*8=381.8779168512 CID.

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    Quote Originally Posted by bww3588
    Stroked LS1= 3.898*3.898*.7854*4.000*8=381.8779168512 CID.
    thank you
    i know i have seen listing for 382, but it is most commonly a 383

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    Modding is an Addiction bww3588's Avatar
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    Quote Originally Posted by jfrc2000
    thank you
    i know i have seen listing for 382, but it is most commonly a 383
    your right. that threw me for a loop too till i did some calculations.

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    Member Exotic Performance Plus's Avatar
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    We have found that Eagle cranks need to be checked for being perfectly true, as we had one that was slightly bent.
    We have had very good success with using the Callies Racemaster crankshafts, which are a little more money that the Eagles, but we feel they are worth it.
    We use Callies Compstar connecting rods and Diamond pistons, along with Total Seal rings. The 382ci is a great combination that really doesn't cost anymore than a 346ci, provided you were going to change out the crankshaft anyway. We normally order the pistons in a very minimal overbore, as most of these blocks have been found to be in excellent condition. Bob
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    Senior Member Nhra Firebird's Avatar
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    Quote Originally Posted by jfrc2000
    thank you
    i know i have seen listing for 382, but it is most commonly a 383
    slp lists their motor as the 382

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