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9000 RPM without breaAKING THE BANK?

This is a discussion on 9000 RPM without breaAKING THE BANK? within the Internal Engine forums, part of the LSx Technical Help Section category; I'm in the process of putting toghether e build sheet (including pro's & con;s including whether or not it financially ...

  1. #1
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    9000 RPM without breaAKING THE BANK?

    I'm in the process of putting toghether e build sheet (including pro's & con;s including whether or not it financially feasible for me to whether to buy a new LSX Bowtie or build out my existing Ls1) one of my aspirations would be a 9,000 RPM engine, I was wondering what input anyone had for a cost effective way to get there with safety, durability and longevity in mind.

    I understandand anything ios possibel with $$$ but how much are we tallking and what type of cam. heads etc would be needed to get there ?

    how could it be done with my existing Ls1 block ?

    whats would be needed to get there with an Lsx block?

    what would the buildsheet look like?

    ps.....I;m not planning on doing alot of drag racing from a dead stop ...this is more for street racing

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    Quote Originally Posted by bossho View Post

    ps.....I;m not planning on doing alot of drag racing from a dead stop ...this is more for street racing
    Why? You can build a naturally aspirated 402/408 LS that's very streetable and reliable making peak power around 7K RPM that will get you pretty deep in the low 11's or high 10's over 120.

    If you really want to make power at 9K on a LS engine, you need a custom lightweight rotating assembly, fabbed sheetmetal intake, hogged out heads, monster cam. You're also going to need a built T-56/clutch.

    Reliable, fast, cheap. Pick 2.

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    Why would you want to turn 9k? You are talking big bucks to get there and it would not be reliable or streetable at all. In order to turn 9k your power band would be all screwed up and the car would run like total crap under 4/5k rpm. If you can post realistic goals there are people on here that can steer you in the right direction cost wise, the stroker idea posted is a good one. If you have to see 9k you might want to get an import.

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    Senior Member Orcus79's Avatar
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    I reflect the sentiments of the others 9000RPM, that's strictly track car territory. and huge dollars talking probably in the range 15k easy for block work, top end internals, machine work and labor, most of that cost going in to the valve train and rotating assembly.

    From your post my guess is that you want 9000 red line for bragging and street cred. take it to the track it's just as fun. Plus you get the paper work to back up the talk.

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    TunedbyFrost.com Tuner Frost's Avatar
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    This is kind of like all of the "I want 1,000 HP on a budget" threads that you see over at that other site in the FI section...

    OP- You would have to run BS3 or other $3000+ standalone to have any control over 8K RPMs. There are MANY more costs hidden just like this one. If you were building a race car it would be different, but if you were building a race car, you also wouldn't have to ask.

    If you want 9K RPMs without breaking the bank, buy a used motorcycle!

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    Quote Originally Posted by Frost View Post
    This is kind of like all of the "I want 1,000 HP on a budget" threads that you see over at that other site in the FI section...

    OP- You would have to run BS3 or other $3000+ standalone to have any control over 8K RPMs. There are MANY more costs hidden just like this one. If you were building a race car it would be different, but if you were building a race car, you also wouldn't have to ask.

    If you want 9K RPMs without breaking the bank, buy a used motorcycle!
    LOL a 1000hp budget TT is the first thing that came to mind when I saw this thread. Everyone wants to play but no one wants to pay!!

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    1000 hp budget ill take 2..lol 9k on a ls1 is flying ull need to probably destroke it and put in new sleeves and bore the hell out of it. can be done yes is it even worth it at that point probably not

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    9k rpm and street racing = parts all over the city.. You can build plenty of power in just about any v8 @ far less rpm. And just 7k rpm would still be a screamer.. You start cranking 9k on open streets and people/ by standers will start getting hurt not to mention what can happen to you... The amount of attention the engine will need is far beyond any DD.. If you're working on a budget, forget about it. You'll need 15-30k ish laying around to just blow on a regular basis..
    Last edited by Smittro; 11-09-2009 at 11:05 PM.
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    Like everyone has said, you have to pay to play the rpm game. Cheapest way would be to steal a nascar motor and buy a standalone system to control it. There are lsxs in gmhtp that rev that high but I can assure you their parts list is through the roof.

    I went this route with my first LT4 and it spun 8k. right now I use a piece of the leftover piston on my desk in front of me. It wasnt pretty. A bad valve job, loose lash = split retainer= ENTIRE motor destroyed. Broken caps, all pistons, all rods, entire block, torn guides right out of the heads, destroyed heads, all valves bent... blah blah blah.. the list goes on.

    I am still going on with a better build up but the parts list is through the roof again. I wish I went with a stout 7k rpm solid roller and I could have been driving it now but man... going through a tunnel at 8000 rpms..... i can't wait till spring

    To put things in perspective my Crank alone was $3700 usd... Lets not even get into the cylinder heads....

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