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.

383 Stroker Project has started>>>

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Burt4x4, Jan 15, 2001.

  1. Burt4x4

    Burt4x4 3/4 ton status

    Joined:
    Feb 17, 2000
    Posts:
    6,854
    Likes Received:
    0
    Location:
    California (Modesto area)
    Hello all, I have a 4bolt 350 cast# 3970010! Yaahoooo just picked it up yesterday.
    So my question begins with, HELP! [​IMG]
    If anyone has done a 383 and has a list of part #'s used, I would like to see it?? I am trying to get a parts list together for pricing so that everyother month I can buy the next piece to this project. Part sources , ideas, recomendations, any and all comments and/or suggestions would be awsome! All the way from what piston to use to the type of cam and valve train! I want this to be a reliable,continueous duty type of motor, that can hold up to long road trips and low RPM useage! Idel to 5000rpm power band!!???
    Thanks for your time!

    72K5[​IMG]Led Zeppelin[​IMG]Rock ON![​IMG]
    <A target="_blank" HREF=http://www.burt4x4.coloradok5.com>http://www.burt4x4.coloradok5.com</A>
     
  2. MudFrog

    MudFrog 1/2 ton status

    Joined:
    Feb 23, 2000
    Posts:
    3,236
    Likes Received:
    0
    Location:
    Daleville, Va
    Can't help you with anything...but be sure to take lots of notes, as I will some day do the same thing.

    89 K5 Silverado
    <A target="_blank" HREF=http://mudfrog.coloradok5.com>http://mudfrog.coloradok5.com</A>
     
  3. ken

    ken 1/2 ton status

    Joined:
    Feb 17, 2000
    Posts:
    1,244
    Likes Received:
    0
    Location:
    Anaheim, CA
    The hardest part is gonna be finding a 400 crank and balancer for a decent price. Yeah, you can go buy new stuff, but that kinda defeats the purpose of doing an engine for a reasonable price. Also, make sure you use the longer 5.7" 350 rods and corresponding pistons for better rod angularity. With only a 350 block, you are a LOOOONG way from having a complete engine. The best way to go about it is to buy a takeout engine and go from there. Pieceing and engine together takes lots of time and usually cost double what you couldda got a complete one for. Good luck.

    ken
     
  4. Burt4x4

    Burt4x4 3/4 ton status

    Joined:
    Feb 17, 2000
    Posts:
    6,854
    Likes Received:
    0
    Location:
    California (Modesto area)
    Will Do!! I plan on taking pics and documenting step by step!
    I hope to do it right the first time too, If not i'll have the pics to help......

    72K5[​IMG]Led Zeppelin[​IMG]Rock ON![​IMG]
    <A target="_blank" HREF=http://www.burt4x4.coloradok5.com>http://www.burt4x4.coloradok5.com</A>
     
  5. Burt4x4

    Burt4x4 3/4 ton status

    Joined:
    Feb 17, 2000
    Posts:
    6,854
    Likes Received:
    0
    Location:
    California (Modesto area)
    I know I'm doing it the hard or long way but looking for the experiance in doing the work myself!
    So is a 400 crank better than the aftermarket 383 cranks.
    I was thinking the aftermarket 383 crank would be more of a bolt up with less or no grinding!!??????

    72K5[​IMG]Led Zeppelin[​IMG]Rock ON![​IMG]
    <A target="_blank" HREF=http://www.burt4x4.coloradok5.com>http://www.burt4x4.coloradok5.com</A>
     
  6. ken

    ken 1/2 ton status

    Joined:
    Feb 17, 2000
    Posts:
    1,244
    Likes Received:
    0
    Location:
    Anaheim, CA
    No, the aftermarket 383 crank is probably the easier, albeit much more expensive, way to go. Me, I would just find a complete 400 engine and build that. There is nothing magical about a 383 that a 400 doesn't do better, what with its 17 cubes more. Remember, more cubes equals more power and torque.

    ken
     
  7. ftn96

    ftn96 1/2 ton status

    Joined:
    Sep 26, 2000
    Posts:
    3,238
    Likes Received:
    0
    Location:
    Nashville Tn
    Ken, I've always heard that 400 cylinder walls were thin. But I've also heard from a totally opposite source that 400 small blocks are the badest engine around. But Im going with the 383 myself. So Im kinda on the bias side with Burt.

    Burt. Im doing the same exact thing. I will keep you up to date on mine as well. Hope you can do the same for me. I have my 350 block stripped and ready to dip and bore. Mine is already 30 over, and Im taking it another 10. The 383 stroker kit that summit sells is $320 bones, and it gives you the part numbers for the rods and crank bearings that they recommend for that particular crank. After the motor is ready that is going to be my first purchase, is the crank, the bearings and the rods. After that I'll be getting the pistons.
    Then next I'll be getting the cam and lifters, and all the realted valve train for this application, then I'll take all that to the head shop so wehn they work my heads they will have all the new goodies for a proper setup. After that I have to find out if my current TBI intake amnifold will fit the new motor, if not, guess I'll be buying that too.

    Will work for parts, beer and sex.
    90 Jimi,350/700R4/241/10bolts/3.73's/33's/4"
    <A target="_blank" HREF=http://mccordhouse.freeservers.com>http://mccordhouse.freeservers.com</A>
     
  8. nyyef

    nyyef 1/2 ton status

    Joined:
    May 16, 2000
    Posts:
    479
    Likes Received:
    0
    Location:
    Saudi Arabia
    i built a 383 about 10 years ago from a 350. all i bought new were the crank (brand new 400 great deal at $107), the bearing (clevite), keith black pistons, cant remember the new rings. in the initial stages, everything else was stock. great motor. eventually, it got an intake, a cam, a holley, some head work, distributor, MSD....then it was gearter.....AND it lasted over 50,000 miles, it blew up after an afternoon of constantly pushing it 8000+ on sand dunes one weekend.

    Knife.
    knife.coloradok5.com
     
  9. Burt4x4

    Burt4x4 3/4 ton status

    Joined:
    Feb 17, 2000
    Posts:
    6,854
    Likes Received:
    0
    Location:
    California (Modesto area)
    Will do! Allot of choices out there!! Makin me dizzy[​IMG]!!
    I have allot of aftermarket parts on my current 350 that I plan on using on the 383 so that is my main reason for sticking with a 383 instead of going to 400 and up.
    This block is the exsact same casting # as the current one in my K5 now so all the 'stuff' I have will be in the same spot and all of it will bolt right up!![​IMG]

    72K5[​IMG]Led Zeppelin[​IMG]Rock ON![​IMG]
    <A target="_blank" HREF=http://www.burt4x4.coloradok5.com>http://www.burt4x4.coloradok5.com</A>
     
  10. Shawn

    Shawn 1/2 ton status Premium Member Author

    Joined:
    Feb 17, 2000
    Posts:
    1,753
    Likes Received:
    5
    Location:
    5280'
    Check out all your options on the crank. Get a copy of Chevy High Performance and you'll see a few companies selling that crank (new). Most aftermarket cranks are a forged steel where a stock 400 isn't. Also check out PAW and speedomotive and see what they have to offer. I found mine on Ebay for a good price and I just did a search for "stroker crank" and found these selling brand new.

    Currently $159
    http://cgi.ebay.com/ebaymotors/aw-cgi/ebayISAPI.dll?ViewItem&item=542829870&r=0&t=0

    Keep in mind, you'll still have to find a decent engine shop put this together and balance everything. I just spent $1000 on my BBC stroker shortblock and that mostly the labor to clean, install and balance everything (no head work). If I had to do it over again, I would of just purchased a stroker short block from Speedomotive. Make sure you get the correct pistons for your desired compression ratio. This all depends on what CC your head combustion chambers are and a few other things. I'd also suggest find a set of alum heads since you could run a little more compression and they usually flow better than stock GM heads. Good luck.



    Shawn
    87 K5
    few mods[​IMG]
    <A target="_blank" HREF=http://www.off-road.com/chevy>http://www.off-road.com/chevy</A>
     
  11. Shawn

    Shawn 1/2 ton status Premium Member Author

    Joined:
    Feb 17, 2000
    Posts:
    1,753
    Likes Received:
    5
    Location:
    5280'
    Here's another one Steve. This is the same guy I bought mine from. I've had good luck with him (PME Racing) and he had no problem when I had to return my 30 over pistons and rings for a set of 60 over (my mistake).

    http://www.off-road.com/chevy
     
  12. ftn96

    ftn96 1/2 ton status

    Joined:
    Sep 26, 2000
    Posts:
    3,238
    Likes Received:
    0
    Location:
    Nashville Tn
    Hey Burt, thats the problem Im going to have. The block I have to rebuild is an older 80's model, and it says below I have a 90 model. SO I have to get all the spec differences between the two. I have the upper hand though. My uncle has been building chevy motors for 30 years, so I've got his whole arsenal of tools and knowledge to help me out. I'm going over to his house tomorrow for lunch to throw around all these ideas you and I are having. I'll let you know if he gives me anything that'll relate to your application. I have a feeling that I should get a newer block that matches my current setup.

    Can anybody refresh my memory as to the website that you can look up casting numbers for chevy stuff?

    Will work for parts, beer and sex.
    90 Jimi,350/700R4/241/10bolts/3.73's/33's/4"
    <A target="_blank" HREF=http://mccordhouse.freeservers.com>http://mccordhouse.freeservers.com</A>
     
  13. Shawn

    Shawn 1/2 ton status Premium Member Author

    Joined:
    Feb 17, 2000
    Posts:
    1,753
    Likes Received:
    5
    Location:
    5280'
    http://www.off-road.com/chevy
     
  14. Burt4x4

    Burt4x4 3/4 ton status

    Joined:
    Feb 17, 2000
    Posts:
    6,854
    Likes Received:
    0
    Location:
    California (Modesto area)
    Thanks Shawn!!
    Ya I almost went with the SpeedOmotive shortblock but comming up with the money all at once and missing out on the put together......... Hey I got the block fer 50 bucks so I whent for it!

    72K5[​IMG]Led Zeppelin[​IMG]Rock ON![​IMG]
    <A target="_blank" HREF=http://www.burt4x4.coloradok5.com>http://www.burt4x4.coloradok5.com</A>
     
  15. Blazer1970

    Blazer1970 1/2 ton status

    Joined:
    Feb 17, 2000
    Posts:
    1,600
    Likes Received:
    0
    Location:
    Old Mission, MI
    Hey Steve, don't forget about the internally/externally balanced question. If you use a 400 crank, it is set up to be externally balanced, so you need a 400 flywheel and balancer. If you buy an aftermarket stroker crank that is internally balanced, you can use your existing flywheel/flexplate and balancer off your 350. Since you don't have any of the 400 parts, this will offset some of the cost of the new internally balanced stroker crank.

    Tim

    70 Blazer CST 4X4 350 SM465 NP205
    87 Burb 4X4 350
    01 GMC 2500HD 4X4 Duramax/Allison
     
  16. Burt4x4

    Burt4x4 3/4 ton status

    Joined:
    Feb 17, 2000
    Posts:
    6,854
    Likes Received:
    0
    Location:
    California (Modesto area)
    Ahh yes good one!!!
    So I'm gonna start with the crank and possiablly a kit! But I know now I want a 383 crank not the 400. So far the Scat is getting great reviews!!
    Any more thoughts....
    So far I've got thease numbers:
    Stroke = 3.750 (Scat or ????)
    Rods= 5.700(what brand?)
    9.1-1 compression pistons(what brand??)
    76cc 1.94/1.50 heads (what brand??)
    Feww and I'm just getting started.../.......

    72K5[​IMG]Led Zeppelin[​IMG]Rock ON![​IMG]
    <A target="_blank" HREF=http://www.burt4x4.coloradok5.com>http://www.burt4x4.coloradok5.com</A>
     
  17. ftn96

    ftn96 1/2 ton status

    Joined:
    Sep 26, 2000
    Posts:
    3,238
    Likes Received:
    0
    Location:
    Nashville Tn
    Burt, I've been doing alot looking around and reading. Im starting to be a little partial to the stroker kit from speedomotive. They have hte budget, the forged, the mighty mouse and the monster mouse or some shat like that.
    anyway, let me know what you decide and I tell you about my journey's wiht my uncle tomorrow.

    LAter.

    Will work for parts, beer and sex.
    90 Jimi,350/700R4/241/10bolts/3.73's/33's/4"
    <A target="_blank" HREF=http://mccordhouse.freeservers.com>http://mccordhouse.freeservers.com</A>
     
  18. chevidog

    chevidog Registered Member

    Joined:
    May 27, 2000
    Posts:
    42
    Likes Received:
    0
    Location:
    Western South Dakota
    A small block 383 IS externally balanced! It is a 350 with a 400 crankshaft ground to fit the 350 journals. A 383 crankshaft is the same as a 400 crankshaft except that it already has the journals ground to fit the 350 block. If you build a 383 you must use 383/400 externally balanced balancer and flexplate/flywheel. I built my 383 almost two years ago and just got it in my jimmy approx. 6 months ago (it went into a chevelle to begin with). I used a summit kit for ease of parts chasing, and I have been very happy with the engine. It is a great engine with loads of torque, and if built moderately it is very reliable. A few key points: be sure to have the block clearenced (the block has to have notches ground into the oil pan mounting area for rod clearence), be sure to have the rotating assemby balanced, and if you are going to use a roller camshaft be aware that too much lift will cause the camshaft to interfere with the crank and rods. It is also a good idea to go with 5.7 rods. Prob. a few more things to remember, but its been a while- I'll keep you posted. Good luck with your build.
     
  19. keith

    keith 1/2 ton status

    Joined:
    Feb 17, 2000
    Posts:
    1,158
    Likes Received:
    1
    Location:
    La Fayette, GA
    Almost got mine finished!!!!! Got some Dart heads last week and I still need the bolts. I got my stroker kit from Speed o motive and they were great. I will post exact numbers soon. my block was 60 over with flat top pistons comp 4x4 cam, edelbrock carb and intake,MSD, headers,dart heads 64cc, man I can't wait to drop that thing in. I currently run a tired 305. Like going from crop duster to jet fighter. Hope yours goes well.

    79 Blazer 6"lift 35's locked/4:56 <A target="_blank" HREF=http://www.keith.coloradok5.com>http://www.keith.coloradok5.com</A>
     
  20. Gandolf

    Gandolf 1/2 ton status

    Joined:
    Aug 8, 2000
    Posts:
    764
    Likes Received:
    0
    Location:
    SF Bay Area
    There is an article on building a 383 Stroker on a budget in the January issue of Hot Rod Magazine. My 350 has 148,000 miles on it and still runs great, but since I'm putting over 1000 miles per month on it, I know a rebuild isn't too far off in the future. I'm exploring my options and a 383 Stroker is high on my list, so any information you pass on from your learning process will be appreciated. Good Luck.

    '89 K5 Silverado 4" lift w/BFG 33's
     

Share This Page