Page 1 of 6 12345 ... LastLast
Results 1 to 20 of 118

Thinking About A 408 Stroker 8:5:1CR Ideas?

This is a discussion on Thinking About A 408 Stroker 8:5:1CR Ideas? within the Internal Engine forums, part of the LSx Technical Help Section category; So i could get a 408 stroker low CR 8:5:1 (So it could supercharge it later on) for about $3700 ...

  1. #1
    Senior Member NeeD4SpeeD's Avatar
    Join Date
    Sep 2005
    Location
    New York, NY
    Posts
    1,720

    Collectors Edition Yellow
    2002 Pontiac Trans AM WS6

    Thinking About A 408 Stroker 8:5:1CR Ideas?

    So i could get a 408 stroker low CR 8:5:1 (So it could supercharge it later on) for about $3700 now i guess pair that up with the afr 225cc $2500 , port match it to my intake and i think i'll be good to go...

    Now what other mods should i consider with a stroker? I know the stroker with heavily increase my torque which is exactly what i want and a 408 is a monster and the highest CU IN i could go before crossing into High CR and having to run race gas or alcohol....

    Any thoughts at all on a stroker motor... Benefits... disadvantages... problems...gains.... all would be appreciated thanks!!!!
    Bulletproof Performance
    2002 Trans AM WS6 M6 Collectors Edition
    LSX 427 F-1R Procharged Build Underway
    Estimated Finish Date: Summer 2012-2013

  2. #2
    TunedbyFrost.com Tuner Frost's Avatar
    Join Date
    Jul 2007
    Location
    Richmond VA
    Posts
    2,415

    LS1.com Sponsor
    GM Tuner

    Quote Originally Posted by NeeD4SpeeD View Post
    a 408 is a monster and the highest CU IN i could go before crossing into High CR and having to run race gas or alcohol....
    what?

  3. #3
    I Like It Stroked 99Ls1fever's Avatar
    Join Date
    Aug 2007
    Location
    Greeley,Co
    Posts
    1,006

    Artic White
    1999 Z28 408 Stroker M6

    dude you dont need to super charge it, i have a 408 and have patriot stage 3 heads with texas giant cam and im making over 530 horses...

  4. #4
    Senior Member NeeD4SpeeD's Avatar
    Join Date
    Sep 2005
    Location
    New York, NY
    Posts
    1,720

    Collectors Edition Yellow
    2002 Pontiac Trans AM WS6

    Quote Originally Posted by Frost View Post
    what?
    Mayb im mis informed but isnt it if you go upwards of 11:5 CR regardless of the stroke you need to run race gas or alcohol to prevent detonation????

  5. #5
    Senior Member NeeD4SpeeD's Avatar
    Join Date
    Sep 2005
    Location
    New York, NY
    Posts
    1,720

    Collectors Edition Yellow
    2002 Pontiac Trans AM WS6

    Quote Originally Posted by 99Ls1fever View Post
    dude you dont need to super charge it, i have a 408 and have patriot stage 3 heads with texas giant cam and im making over 530 horses...
    I still want it to be streetable thats why i thought i would supercharge it... Plus its adjustable HP

  6. #6
    Senior Member NeeD4SpeeD's Avatar
    Join Date
    Sep 2005
    Location
    New York, NY
    Posts
    1,720

    Collectors Edition Yellow
    2002 Pontiac Trans AM WS6

    Quote Originally Posted by 99Ls1fever View Post
    dude you dont need to super charge it, i have a 408 and have patriot stage 3 heads with texas giant cam and im making over 530 horses...
    408 must be badass huh.....

  7. #7
    I Like It Stroked 99Ls1fever's Avatar
    Join Date
    Aug 2007
    Location
    Greeley,Co
    Posts
    1,006

    Artic White
    1999 Z28 408 Stroker M6

    Quote Originally Posted by NeeD4SpeeD View Post
    I still want it to be streetable thats why i thought i would supercharge it... Plus its adjustable HP
    good point...lol

  8. #8
    I Like It Stroked 99Ls1fever's Avatar
    Join Date
    Aug 2007
    Location
    Greeley,Co
    Posts
    1,006

    Artic White
    1999 Z28 408 Stroker M6

    Quote Originally Posted by NeeD4SpeeD View Post
    408 must be badass huh.....
    It is a pretty fun engine, there is no doubt about that. But i still dd it three times a week for about 90 miles a day... and i have no problems with it..

  9. #9
    Senior Member NeeD4SpeeD's Avatar
    Join Date
    Sep 2005
    Location
    New York, NY
    Posts
    1,720

    Collectors Edition Yellow
    2002 Pontiac Trans AM WS6

    Quote Originally Posted by 99Ls1fever View Post
    It is a pretty fun engine, there is no doubt about that. But i still dd it three times a week for about 90 miles a day... and i have no problems with it..
    Wow nice thats awesome... I still wanna be able to drive to cruise nights and car shows and around town with out a problem so if you said 90 miles on the 408 then thats prefect for me

  10. #10
    Senior Member NeeD4SpeeD's Avatar
    Join Date
    Sep 2005
    Location
    New York, NY
    Posts
    1,720

    Collectors Edition Yellow
    2002 Pontiac Trans AM WS6

    Quote Originally Posted by 99Ls1fever View Post
    good point...lol
    LOL yup thats why i figured low CR would be better plus i wanna stay on 93 pump gas

  11. #11
    TunedbyFrost.com Tuner Frost's Avatar
    Join Date
    Jul 2007
    Location
    Richmond VA
    Posts
    2,415

    LS1.com Sponsor
    GM Tuner

    let your builder pick your SCR based on your needs; fwiw, 8.5:1 is nice for a max/high effort turbo setup on pump gas. If it were being built for a SC, I'd personally look for more along the lines of 9.5:1 SCR. For pump gas and no power power adder, 11.0:1 to 11.5:1 depending on the cam selection and a few other items.

  12. #12
    I Like It Stroked 99Ls1fever's Avatar
    Join Date
    Aug 2007
    Location
    Greeley,Co
    Posts
    1,006

    Artic White
    1999 Z28 408 Stroker M6

    Quote Originally Posted by NeeD4SpeeD View Post
    Wow nice thats awesome... I still wanna be able to drive to cruise nights and car shows and around town with out a problem so if you said 90 miles on the 408 then thats prefect for me
    I bought it to drive it...lol

  13. #13
    Senior Member NeeD4SpeeD's Avatar
    Join Date
    Sep 2005
    Location
    New York, NY
    Posts
    1,720

    Collectors Edition Yellow
    2002 Pontiac Trans AM WS6

    Quote Originally Posted by 99Ls1fever View Post
    I bought it to drive it...lol
    YEA... I like where your heads at!
    Last edited by NeeD4SpeeD; 01-28-2008 at 06:44 PM.

  14. #14
    Senior Member NeeD4SpeeD's Avatar
    Join Date
    Sep 2005
    Location
    New York, NY
    Posts
    1,720

    Collectors Edition Yellow
    2002 Pontiac Trans AM WS6

    Quote Originally Posted by Frost View Post
    let your builder pick your SCR based on your needs; fwiw, 8.5:1 is nice for a max/high effort turbo setup on pump gas. If it were being built for a SC, I'd personally look for more along the lines of 9.5:1 SCR. For pump gas and no power power adder, 11.0:1 to 11.5:1 depending on the cam selection and a few other items.
    Hmmm 9.5:1 for a SC makes sense i guess that could be adjusted from the heads cuz im gunna switch to the AFR 255cc... I do wanna go for a SC setup i actually chose the D1SC 8psi serpentine race kit... So i would like to keep it on pump gas but im def gunna have a power adder in the future mayb next summer but i wanna get this done for this summer. The stroker kit comes with the following....

    Lunati LS1 408 Rotating Assembly
    4.030" Bore, -38cc Dish Piston
    4.000" Stroke, 6.125" Rod Length
    8.5:1 compression ratio

    So i guess i could bump it up by the heads and i could get 42# High impedence and flow match injectors with an upgraded oil pump and a walboro 255 in tank pump and fuel system and i should be good am i correct...?

    Just trying to get all the facts straight before i plunge into it but i will definatly consult my builder on what im looking for in the end... But i do wanna keep it as a DD car even tho i dont use it at all just cause i want it to be good on cruises and shit

  15. #15
    I Like It Stroked 99Ls1fever's Avatar
    Join Date
    Aug 2007
    Location
    Greeley,Co
    Posts
    1,006

    Artic White
    1999 Z28 408 Stroker M6

    Quote Originally Posted by NeeD4SpeeD View Post
    LOL yup thats why i figured low CR would be better plus i wanna stay on 93 pump gas
    I still run 91 octane at 11.1 compression...

  16. #16
    I Like It Stroked 99Ls1fever's Avatar
    Join Date
    Aug 2007
    Location
    Greeley,Co
    Posts
    1,006

    Artic White
    1999 Z28 408 Stroker M6

    Quote Originally Posted by NeeD4SpeeD View Post
    YEA... I like where your heads at!
    Thanks man, I love the comment.. it sounds like something I would say

  17. #17
    TunedbyFrost.com Tuner Frost's Avatar
    Join Date
    Jul 2007
    Location
    Richmond VA
    Posts
    2,415

    LS1.com Sponsor
    GM Tuner

    Those injectors will be maxed out around around 550rwhp with meth and a supercharger on an M6. Way too small for the potential of that engine. 60s can make over 800rwhp with meth. There would be no reason to start with less than 14-15 psi on an engine like that, which will be close to maxing that blower out, especially with AFR heads. You will need to scrap your stock fuel system. Will need two pumps if using the affordable Walbros, second one on under boost only, new feed line, front -mounted boost-referenced fuel pressure reg, and a real return line (I like to reuse the stock feed for this), and the meth is a must for longevity. Don't worry, a $28 dollar 5-gallon can of methanol will sometimes last me 6 months!

    You should do all of your research and have (and stick to) a solid plan before you spend any money at all if you want to get the most for your dime. A setup like you are describing can make over 700rwhp with pump gas and meth.

  18. #18
    I Like It Stroked 99Ls1fever's Avatar
    Join Date
    Aug 2007
    Location
    Greeley,Co
    Posts
    1,006

    Artic White
    1999 Z28 408 Stroker M6

    He speaks the truth I had to upgrade my injectors and i am around 530hp...

  19. #19
    Senior Member NeeD4SpeeD's Avatar
    Join Date
    Sep 2005
    Location
    New York, NY
    Posts
    1,720

    Collectors Edition Yellow
    2002 Pontiac Trans AM WS6

    Quote Originally Posted by 99Ls1fever View Post
    I still run 91 octane at 11.1 compression...
    I dunno mayb i got my info wrong i heard the closer you get to 11.5 should lean toward race fuel to avoid detonation.... I guess i learned wrong

  20. #20
    Senior Member NeeD4SpeeD's Avatar
    Join Date
    Sep 2005
    Location
    New York, NY
    Posts
    1,720

    Collectors Edition Yellow
    2002 Pontiac Trans AM WS6

    Quote Originally Posted by 99Ls1fever View Post
    Thanks man, I love the comment.. it sounds like something I would say
    LOL niice brotha's frum another motha!!!

Page 1 of 6 12345 ... LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Thinking about stroker? opinions suggestions?
    By stevenm357 in forum Internal Engine
    Replies: 42
    Last Post: 09-26-2008, 08:00 AM
  2. Question: 6.0 stroker
    By speeedo in forum Internal Engine
    Replies: 6
    Last Post: 03-19-2008, 02:43 AM
  3. Stroker or not?
    By rajiv1998 in forum Firebird / WS6
    Replies: 1
    Last Post: 11-20-2007, 08:33 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •