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Ls1 383 stroker.

This is a discussion on Ls1 383 stroker. within the Internal Engine forums, part of the LSx Technical Help Section category; I have some questions and I need more info. I dnt really know much bout it. If some one can ...

  1. #1
    Senior Member 98maro's Avatar
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    00 camaro ss M6 #6695

    Ls1 383 stroker.

    I have some questions and I need more info. I dnt really know much bout it. If some one can help me out pls.

    I'm planning on rebuild my motor. I dnt want to spend that money and still have it stock.
    I want to get a stroker kit. But I'm thinking on 383 stroker.
    Most of the 383 stroker I see are lt1. Is it possible to make ls1 383?
    Or I have to buy a new block?
    I found some kits for like $800 dollars.
    I like the 402 but that's out of my price range. I found kits for $1900.
    Another question. On stroker I can use the ls6 heads and intake?
    Thanks for the help.
    00 ss blk m6 " STOCK" strano springs, slp bilstein shocks, adj LCA, adj panhard bar, relocation brackets, 2 point SFCs welded,OEM zo6 rims black, magnaflow exhaust, CME exhaust,E/cutout, slp grille, custom front plate mount, HIDs, whistler mod, side moldings delete, slp air lid, ported and polished TB, strut tower brace, 3.73s gears, and some other parts to list!
    next to come,4.10s,ls7 clutch, ms3 or 228r cam, ported 243s, ls6 intake, ls6 oil pump. ls2 timing chain, longtube headers no cats, with a tune..
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    Senior Member 98maro's Avatar
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    00 camaro ss M6 #6695

    The Car is a DD. So that's why I dnt want so
    Something to crazy. I thought 383 is a good option.

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    Member 1nasty86's Avatar
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    A 383 will make alittle more power than a stock ci. Ls1. Id say rebuild what you have and spend the money on a NICE set of heads, a custom camshaft, fast intake, and other supporting mods.

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    Senior Member bluehawk2000's Avatar
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    Don't quote me on this, but I think you might have to resleeve the block for this do some head work, but from my understanding a 383 is nothing but a 350 block with a 400 crank and other mods to the heads and valve train.

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    Senior Member 98maro's Avatar
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    thanks for the help..
    i dnt really knw much bout stroker and cams..
    i want to hit 400 t0 450 hp..
    in cali i cant go with a big cam cuz the emissions but i dnt care,, forget that, im goin with LTs and a cam.. im thinking on buyin a ls2 or ls6 block and start from there fix it with the time.. and keep mine stock in my storage, in case something happens.
    i love the 402 stroker but i think it makes more noise,, i dnt wanna make it to obvious for cops when they are behind me or something..
    ill be running LTs and high flow cats..
    im i wrong or it rally makes a difference on noise from 383 to 402 or 408?

    what could be a good set of heads? nothing to expensive like AFRs and stuff like that..
    i was thinking on 243s or the other heads that come on the trucks,, idk the casting number i just heard good things bout them

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    Senior Member 98maro's Avatar
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    this is what i want to do,, let me knw if im goin the right direction or what im gonna need..

    i want the 383 kit
    ls6 intake
    ls6 block
    243 heads ported.
    LTs
    and a good cam.. nothing big,,
    probably 224/228 idk much bout cams.
    and of course a tune,, after is done..

    for trans im goin with a ls7 clutch kit.

    dnt ask me bout rear end lol i have a plan after i get that done..

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    Member 1nasty86's Avatar
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    Quote Originally Posted by bluehawk2000 View Post
    Don't quote me on this, but I think you might have to resleeve the block for this do some head work, but from my understanding a 383 is nothing but a 350 block with a 400 crank and other mods to the heads and valve train.
    your thinking old school sbc. this is new school. the thing that makes a "stroker" motor is the 4.00 stroke crankshaft. put a 4.00 stroke in ls1=383 ls2=402 ls3=416....
    Quote Originally Posted by 98maro View Post
    this is what i want to do,, let me knw if im goin the right direction or what im gonna need..

    i want the 383 kit
    ls6 intake
    ls6 block
    243 heads ported.
    LTs
    and a good cam.. nothing big,,
    probably 224/228 idk much bout cams.
    and of course a tune,, after is done..

    for trans im goin with a ls7 clutch kit.

    dnt ask me bout rear end lol i have a plan after i get that done..
    you do not need a ls6 block to make a 383. your ls1 block will work fine. send your heads to someone and have them ported T.E.A., TSP, or some other company. id call geoff from eps and have him spec you a camshaft and his camshafts are no higher than any other.

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    Senior Member 98maro's Avatar
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    the reason i want the ls6 block is because i want to buy an extra block and i herad the ls6 is better than the ls1..
    and i have heard the ls1 block can brake after some miles,, idk if thats true..
    the reason i want the extra block is because i want to keep the stock motor if for some reason i sell the car or who knws..
    what do they do with the ls1 + 383 kit.. do they make the holes for the pistons bigger or is the same size?

    what should i do port the ls1 heads or get 243 or 799 heads?

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    Member 1nasty86's Avatar
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    Quote Originally Posted by 98maro View Post
    the reason i want the ls6 block is because i want to buy an extra block and i herad the ls6 is better than the ls1..
    and i have heard the ls1 block can brake after some miles,, idk if thats true..
    the reason i want the extra block is because i want to keep the stock motor if for some reason i sell the car or who knws..
    what do they do with the ls1 + 383 kit.. do they make the holes for the pistons bigger or is the same size?

    what should i do port the ls1 heads or get 243 or 799 heads?
    the bore stays the same. they just use a longer stroke crankshaft. 3.90 bore+4.00 stroke=383 ci/3.90 bore+3.622 stroke=347. and yes the ls6 block would be better than the ls1. and id buy some 243 ls6 heads, they have light weigh valves and are relatively cheap.

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    Senior Member 98maro's Avatar
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    Quote Originally Posted by 1nasty86 View Post
    the bore stays the same. they just use a longer stroke crankshaft. 3.90 bore+4.00 stroke=383 ci/3.90 bore+3.622 stroke=347. and yes the ls6 block would be better than the ls1. and id buy some 243 ls6 heads, they have light weigh valves and are relatively cheap.
    thanks for the help bro..

    so do i really gain hp with the 383? how much hp should i make,,
    i think the kit comes with the springs but i dnt knw how good they are,, and im not sure but i belive it comes with the cam as well.
    i was searching for some info and some threads said i need to get bigger injectors is that true?

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    Quote Originally Posted by 98maro View Post
    thanks for the help bro..

    so do i really gain hp with the 383? how much hp should i make,,
    i think the kit comes with the springs but i dnt knw how good they are,, and im not sure but i belive it comes with the cam as well.
    i was searching for some info and some threads said i need to get bigger injectors is that true?
    what "kit" are you talking about? and yes you SHOULD have to get bigger injectors, the stocks max out fairly easy. a bigger maf would be good also. the truck 85mm maf is a good upgrade from the stock ls1. id save the money honestly and just rebuild the ls1. guy i know was making 224rwhp with a fast 90 and a vindicator 2 camshaft. stock never been touched heads. now makes 475 with some heads... still a stock ci ls1.

    id do this
    -re ring the pistons
    -all new bearings
    -put it back together
    -install the 243 heads
    - comp. trunion rocker upgrade
    - comp. 918 or better springs
    - eps camshaft (call geoff at engine power systems)
    -fast 90/92
    -85mm maf
    -ls2 timing chain
    -ls7 lifters
    -hardened pushrods
    -30lb red top ford racing injectors (36lbs on 60psi)
    -racetronix 255 pump and wiring kit
    -tune
    -done!
    Last edited by 1nasty86; 02-13-2011 at 12:03 AM.

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    Senior Member 98maro's Avatar
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    Quote Originally Posted by 1nasty86 View Post
    what "kit" are you talking about? and yes you SHOULD have to get bigger injectors, the stocks max out fairly easy. a bigger maf would be good also. the truck 85mm maf is a good upgrade from the stock ls1. id save the money honestly and just rebuild the ls1. guy i know was making 224rwhp with a fast 90 and a vindicator 2 camshaft. stock never been touched heads. now makes 475 with some heads... still a stock ci ls1.

    id do this
    -re ring the pistons
    -all new bearings
    -put it back together
    -install the 243 heads
    - comp. trunion rocker upgrade
    - comp. 918 or better springs
    - eps camshaft (call geoff at engine power systems)
    -fast 90/92
    -85mm maf
    -ls2 timing chain
    -ls7 lifters
    -hardened pushrods
    -30lb red top ford racing injectors (36lbs on 60psi)
    -racetronix 255 pump and wiring kit
    -tune
    -done!
    its a kit i found on ebay.. some are like 800 to 1300 some come complete,,
    the reason im asking all this is because i have to fix up my motor its burning oil.. so i dnt wanna use the same pistons and stuff like that,,
    i will get for sure the
    ls6 heads
    ls6 intake
    ls2 chain
    the lifter i wasnt sure i was gonna use the stock ones,,
    but seems like ls7 are good..
    the springs i was gonna use the ones on the 243 heads,, are they good?
    so the motor will be fully rebuild,, from top to bottom..
    fast intake idk if i can afford that lol

  13. #13
    Member 1nasty86's Avatar
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    I would not trust a 800-1300 dollar rotating assembly. But ur motor.. Ur decision. Ls7 lifters are good lifters and the stock ls6 springs are good for like .570 lift. I had some 243 heads on my 5.3 and swapped the stockers for some 918's. Forged pistons and some scat rods would run you roughly 800 bucks and you can reuse your stock crank. But sounds like ur pretty much set on a 383.

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    Senior Member bluehawk2000's Avatar
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    Quote Originally Posted by 98maro View Post
    the reason i want the ls6 block is because i want to buy an extra block and i herad the ls6 is better than the ls1..
    and i have heard the ls1 block can brake after some miles,, idk if thats true..
    the reason i want the extra block is because i want to keep the stock motor if for some reason i sell the car or who knws..
    what do they do with the ls1 + 383 kit.. do they make the holes for the pistons bigger or is the same size?

    what should i do port the ls1 heads or get 243 or 799 heads?
    The ls6 and the ls1 is pretty much the same motor, I believe the ls6 just has a few more cooling ports in it. That is why in 01 and 02 they started using them cause they run out of ls1 blocks. You can use all the same internals, heads with both, you will hear people saying oh yea well I have a ls6 it's better than the ls1 when it is not true!!

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    I have a ls1 383 that I built last year. Callies compstar rotating assembly, stock heads with a port job, tsp v2 cam, 30lbs injectors, ls6 intake, built 4l60e with a 3600 yank converter and stock rear with 3;23 gear. Put down 430rwhp and 426 rwtq.

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    This is a pretty good thread as I plan to rebuild my block and get some 243 heads. Just hoping once the car is in the shop, the guys can save my cam.

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    Very steetable, still gets 18 to 20 mph on the highway. I would stay away for the 800 dollar rotating assemblys.

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    Senior Member bluehawk2000's Avatar
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    Quote Originally Posted by cpop98ws6 View Post
    Very steetable, still gets 18 to 20 mph on the highway. I would stay away for the 800 dollar rotating assemblys.
    Yea like they always say if you going to do it, do it right the first time so you don't have to go back and replace shit!!

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    Senior Member 98maro's Avatar
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    im still confused on what i want.. but i like the hp on the stroker 383.. but since the only thing that changes is the crank shaft ill just buy the crankshaft separate and use the same internals,,but if i need new pistons im a get the forged pistons i think they are bout $400 dollars plus the crank shaft,,
    on the cam im open to ideas, if its smog legal better,, i was told 224/224 is legal and makes good power,, i was thinkin on 224/228,
    on the block ill be using the ls1 or ls6 depending on what deal i can get..

    i have a friend his selling me a 5.3 motor with 70xxx miles.. could i use those internals? he wants 500 dollars for it,

    my buddy said not to get the 800 kit cuz a good kit could cost bout $2500 to $3000

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    Senior Member 98maro's Avatar
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    Quote Originally Posted by cammed goat View Post
    This is a pretty good thread as I plan to rebuild my block and get some 243 heads. Just hoping once the car is in the shop, the guys can save my cam.
    are you triyin to rebuild it as stroker or what are your plans?

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