Building a short block and strong transmission... What parts to avoid/choose?

Discussion in '96-04 - 2V Specific' started by kenny150r, Apr 7, 2015.

  1. kenny150r

    kenny150r Member

    Messages:
    114
    Likes Received:
    0
    Joined:
    Jun 17, 2013
    Location:
    Nevada
    Hello all,

    My car is getting old, with almost 140k miles. And while it's running fine now, I am wanting to add a blower in the next year and a half or so, hopefully a kenne bell. My first step was to get some PI heads and some decent cams, as KB doesn't support the npi heads anymore. Now, my second step is trying to build a powertrain that can hold the power. For the transmission, I am planning on having T-45 source build one. However, for the engine, I am sort of lost. For under $2000, is there any good rotating assemblies out there that will be able to hold 500-600 hp? I am planning on using my stock block, if that will work? I know mmr makes short blocks, but if I can save money by using my old block that would be best.

    What sort of rotating assembly should I use? Any suggestions of where to start?
     
  2. Cpotts13

    Cpotts13 Well-Known Member

    Messages:
    1,594
    Likes Received:
    36
    Joined:
    Mar 11, 2012
    Location:
    Biloxi, MS
    From my internet browsing it seems that the stock block will hold just fine, the problem was the rods and pistons really. For 2k finding a good rotating assembly will be cake my man. So long as you don't mind used parts, if you want new then it will be close to that price. If it was my build, id go for a forged OEM crank (mach 1/ cobra), boss rods, and terminator pistons. That should hold your desired power all day long..
     
  3. chris91

    chris91 Well-Known Member

    Messages:
    3,761
    Likes Received:
    198
    Joined:
    Apr 20, 2007
    Location:
    Cincinnati, OH
    Find someone selling a Terminator short block and be done.
     
  4. kenny150r

    kenny150r Member

    Messages:
    114
    Likes Received:
    0
    Joined:
    Jun 17, 2013
    Location:
    Nevada
    Chris91 should I be looking on ebay? Or is there a better place to look for something like that?
     
  5. chris91

    chris91 Well-Known Member

    Messages:
    3,761
    Likes Received:
    198
    Joined:
    Apr 20, 2007
    Location:
    Cincinnati, OH
    Not sure about eBay. I'd check on svtp or corral.
     
  6. kenny150r

    kenny150r Member

    Messages:
    114
    Likes Received:
    0
    Joined:
    Jun 17, 2013
    Location:
    Nevada
    Would it be better to build a new short block rather than trying to use a used terminator block? If I could do them for the same price, which is what it seems... the terminators have just a windsor iron block, might as well use the Romeo I have already to match my heads and throw $2000 into a rotating assembly and I should be built stronger than a terminator right?
     
  7. D3VST8R96GT

    D3VST8R96GT Well-Known Member

    Messages:
    3,996
    Likes Received:
    83
    Joined:
    Feb 19, 2009
    Location:
    SE Georgia!
    Used cobra crank 300-500
    New pistons 500-????
    Boss rods 150
    Rings and bearings 250-500
    Hardware 400ish (jack, main caps, rod bolts, head studs)
    Plus machine work and assembly.

    Don't buy a used crank that needs work ....350 is a good price for one that doesn't need work IMO.

    New pistons.... just get new ones save the head ache. Plan your compression ratio

    Rings and bearings depending on the piston and what level of bearings you want.... you can spend a lot of money here but you probably won't come close to the boundaries so you could do find with the basic (above OEM)

    Hardware.... you can reuse the stuff you pull off. You can replace it with TTY fasteners many people swear by them. Again you probably won't get to a power level you would need all of them. Head steads are just insurance IMO....

    Machine work and assembly. Find someone who doesn't work on Harley Davidson's..... lol
     
  8. 96blak54

    96blak54 Legend

    Messages:
    7,478
    Likes Received:
    791
    Joined:
    Feb 21, 2011
    Location:
    Ky
    Swap rods and pistons to coyote and flat top forged pistons. Modify the npi heads and be done. Youll be happy!
     
  9. kenny150r

    kenny150r Member

    Messages:
    114
    Likes Received:
    0
    Joined:
    Jun 17, 2013
    Location:
    Nevada
    I've already got PI heads for my block, got rid of the NPI ones. I am trying to go with a low compression build and then crank up the boost!

    D3VST8R96GT, thank you for the input... I haven't heard of these boss rods until today! I'll have to see if I can pull some prices together for those parts.

    Do you know if there is any catch with the kits mod max racing makes? Like this one:
    http://www.modmaxracing.com/product_p/99025254.htm
    Is there a catch? Seems pretty cheap and comes with everything needed for a nice shortblock. Would just need my machine shop to hone the block and balance everything.
     
  10. DropTopPony

    DropTopPony Administrator Staff Member Admin SN95 Supporter

    Messages:
    15,342
    Likes Received:
    119
    Joined:
    Jan 12, 2006
    Location:
    South Jersey
    If you are on a budget then no need to buy a Cobra crank. Your cast crank will handle the power you want to make easily. Thats 3-400 you can put into something else like a tune.
     
  11. 96blak54

    96blak54 Legend

    Messages:
    7,478
    Likes Received:
    791
    Joined:
    Feb 21, 2011
    Location:
    Ky
    Why low compression? The cylinders can only retain so much "boost" before thermal dynamics come into play. Your better to increase compression and low boost. 500rwhp can be had very easily and cheap.
     
  12. D3VST8R96GT

    D3VST8R96GT Well-Known Member

    Messages:
    3,996
    Likes Received:
    83
    Joined:
    Feb 19, 2009
    Location:
    SE Georgia!
    I have bought the rods.... ask if they are ready to drop in once the assembly is balanced. Obviously after your block work is done.
    Yeah on 2nd thought DTP is right. Unless you have an 8bolt crank already (Windsor wtf) its a little less headache for later..
    With the restriction the SOHC motors face it comes oh so soon Lol.

    With compression we have to talk about your cam choice....
     
  13. D3VST8R96GT

    D3VST8R96GT Well-Known Member

    Messages:
    3,996
    Likes Received:
    83
    Joined:
    Feb 19, 2009
    Location:
    SE Georgia!
    Pump gas, E85, meth?
     
  14. kenny150r

    kenny150r Member

    Messages:
    114
    Likes Received:
    0
    Joined:
    Jun 17, 2013
    Location:
    Nevada
    I'd like to run 91/93, and from what I've read the drop in power from a lower comp. ratio is way less than the power gained from pushing more boost.
     
  15. D3VST8R96GT

    D3VST8R96GT Well-Known Member

    Messages:
    3,996
    Likes Received:
    83
    Joined:
    Feb 19, 2009
    Location:
    SE Georgia!
    Yes generally speaking that is true. But blower efficiency iat become major players with additional boost. This is compounded when your motor doesn't flow air very well (2v life)
     
  16. 96blak54

    96blak54 Legend

    Messages:
    7,478
    Likes Received:
    791
    Joined:
    Feb 21, 2011
    Location:
    Ky
    The efficiency of a modular 2v head paired with a 3.5" bore....youll see no problems, especially with a npi head (I had to throw that in there..lol...its true though)