Page 1 of 2 12 LastLast
Results 1 to 20 of 32

roller rockers

This is a discussion on roller rockers within the Internal Engine forums, part of the LSx Technical Help Section category; i was thinking of swapping in some 1.7 rollers in my 2000 formula in place of the stock rockers..anyone know ...

  1. #1
    Impounded
    Join Date
    Apr 2008
    Location
    conroe tx
    Age
    38
    Posts
    497

    maple red metallic
    2000 firebird formula

    roller rockers

    i was thinking of swapping in some 1.7 rollers in my 2000 formula in place of the stock rockers..anyone know the hp gain with this? ...what else needs to be changed? springs ? lifters? pushrods?...

  2. #2
    Member TACE02's Avatar
    Join Date
    Aug 2005
    Location
    Texas
    Age
    41
    Posts
    568

    ASC #753
    2002 Collector's Edition

    I thought 1.7 is stock size...

  3. #3
    Impounded
    Join Date
    Apr 2008
    Location
    conroe tx
    Age
    38
    Posts
    497

    maple red metallic
    2000 firebird formula

    it may be...if so then 1.8?...anyway i still wanna get the rollers

  4. #4
    Member TACE02's Avatar
    Join Date
    Aug 2005
    Location
    Texas
    Age
    41
    Posts
    568

    ASC #753
    2002 Collector's Edition

    not completely sure, didn't go that route... But if you get the 1.8s you change your overrall lift, higher (not sure just how much though, I don't know the math for figuring it up). I would say you wouldn't be doing wrong by upgrading the rest of the valvetrain while you are there, ie. springs and pushrods.

    Quick question: why not just install a cam and upgrade valvetrain? No need for upgrade of rockers then.

  5. #5
    Member tims02's Avatar
    Join Date
    Mar 2008
    Location
    Katy,TX
    Posts
    300

    Millenium Yellow
    2002 Coupe

    Mike,

    Yes 1.7's are stock rocker size. Depending on who's product you read they claim a 10-20 h.p increase with the swap to 1.8 or 1.85 rockers. Also, depending on what your looking to do with the engine the stock pushrods should work just fine but as far as the springs go high mileage vehicles should look into changing springs,retainers and locks anyways. Just holler at me and we can do that when you get them.

  6. #6
    Impounded
    Join Date
    Apr 2008
    Location
    conroe tx
    Age
    38
    Posts
    497

    maple red metallic
    2000 firebird formula

    Quote Originally Posted by tims02 View Post
    Mike,

    Yes 1.7's are stock rocker size. Depending on who's product you read they claim a 10-20 h.p increase with the swap to 1.8 or 1.85 rockers. Also, depending on what your looking to do with the engine the stock pushrods should work just fine but as far as the springs go high mileage vehicles should look into changing springs,retainers and locks anyways. Just holler at me and we can do that when you get them.
    i was wanting to get them when i get the headers....june sometime...getting a cam and heads for me will be a little hard to do due to budget..(as you may know tim) ...but i found the rockers for less than 200....so i thought maybe a cheap route for more hp.

  7. #7
    Member tims02's Avatar
    Join Date
    Mar 2008
    Location
    Katy,TX
    Posts
    300

    Millenium Yellow
    2002 Coupe

    yeah..H.P. is H.P. any way you can get it. What's the stock lift on the Firebirds cam?

  8. #8
    Impounded
    Join Date
    Apr 2008
    Location
    conroe tx
    Age
    38
    Posts
    497

    maple red metallic
    2000 firebird formula

    Quote Originally Posted by tims02 View Post
    yeah..H.P. is H.P. any way you can get it. What's the stock lift on the Firebirds cam?
    not quite sure on that ....havnt gotten that far with the specs yet

  9. #9
    Member TACE02's Avatar
    Join Date
    Aug 2005
    Location
    Texas
    Age
    41
    Posts
    568

    ASC #753
    2002 Collector's Edition

    1998 - 2000 Fbody
    202/210 int/exh @ 0.05" duration
    0.496" / 0.496" int/exh lift
    116 LSA


    http://www.smokemup.com/tech/ls1.php

  10. #10
    Member tims02's Avatar
    Join Date
    Mar 2008
    Location
    Katy,TX
    Posts
    300

    Millenium Yellow
    2002 Coupe

    Thanks Tace02. So with a set of 1.8 rockers your lift would be .525" / .525" and with a set of 1.85 rockers it would be .539" / .539"

  11. #11
    King 0f n00bz shady milkman's Avatar
    Join Date
    Jan 2006
    Location
    Shepherd, Michigan
    Age
    29
    Posts
    11,775

    blacker than wesleysnipes
    98' trans am

    be carefull with the springs...stock springs blow and can barely handle stock cam specs...i would deff upgrade the springs..when dealing with valvetrain..its better safe then sorry. the valvetrain is sorta like the spinal cord/nervous system of your engine...something goes wrong then so does everything else..be safe..upgrade your springs too.

  12. #12
    Impounded
    Join Date
    Apr 2008
    Location
    conroe tx
    Age
    38
    Posts
    497

    maple red metallic
    2000 firebird formula

    Quote Originally Posted by shady milkman View Post
    be carefull with the springs...stock springs blow and can barely handle stock cam specs...i would deff upgrade the springs..when dealing with valvetrain..its better safe then sorry. the valvetrain is sorta like the spinal cord/nervous system of your engine...something goes wrong then so does everything else..be safe..upgrade your springs too.
    can this be done without removing the heads??...if so then tim it looks like we got some work to do soon.

  13. #13
    King 0f n00bz shady milkman's Avatar
    Join Date
    Jan 2006
    Location
    Shepherd, Michigan
    Age
    29
    Posts
    11,775

    blacker than wesleysnipes
    98' trans am

    yes springs are on the top...no head removal is required..its actually really easy...remove the valve covers .. its easy.

  14. #14
    Member tims02's Avatar
    Join Date
    Mar 2008
    Location
    Katy,TX
    Posts
    300

    Millenium Yellow
    2002 Coupe

    Mike,

    Piece of cake buddy..Let me know when you're ready!!

  15. #15
    Impounded
    Join Date
    Apr 2008
    Location
    conroe tx
    Age
    38
    Posts
    497

    maple red metallic
    2000 firebird formula

    i just wasnt sure if the springs were off that the valves wouldnt drop

  16. #16
    Member tims02's Avatar
    Join Date
    Mar 2008
    Location
    Katy,TX
    Posts
    300

    Millenium Yellow
    2002 Coupe

    They will if you don't blow air into the cylinder to keep them up in the head.

  17. #17
    Impounded
    Join Date
    Apr 2008
    Location
    conroe tx
    Age
    38
    Posts
    497

    maple red metallic
    2000 firebird formula

    so i found a set of springs and rockers on ebay...what do ya think?

    http://cgi.ebay.com/ebaymotors/COMP-...spagenameZWD1V

    http://cgi.ebay.com/ebaymotors/Alumi...3286.m20.l1116

  18. #18
    Member tims02's Avatar
    Join Date
    Mar 2008
    Location
    Katy,TX
    Posts
    300

    Millenium Yellow
    2002 Coupe

    Thumbs up

    Mike,

    They look fine. They'll do everthing you need them to do. Gonna get 'em?

  19. #19
    Impounded
    Join Date
    Apr 2008
    Location
    conroe tx
    Age
    38
    Posts
    497

    maple red metallic
    2000 firebird formula

    yea im gonna get em in june with the headers.

  20. #20
    member since may 2000 nhraformula's Avatar
    Join Date
    Dec 2002
    Location
    n/w chicago
    Age
    47
    Posts
    6,933

    black
    2000 nhra edition formula

    dont waste youre money.
    i had 1.85 rockers in for a year then ditched them
    2000 nhra edition formula
    a few bolt ons, 379 rwhp
    11.96 @113.25

Page 1 of 2 12 LastLast

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. prw roller rockers?
    By JROBINSON1016 in forum Internal Engine
    Replies: 5
    Last Post: 09-15-2013, 08:27 AM
  2. How To Buy Used Roller Rockers
    By Ed Blown Vert in forum General Help
    Replies: 1
    Last Post: 02-21-2013, 05:52 AM
  3. Roller Lifters and Aluminum Roller Rockers
    By MadSeason in forum Internal Engine
    Replies: 7
    Last Post: 03-14-2006, 03:23 PM
  4. anyone have the 1:8.5 roller rockers?......
    By 5 ltr. beater in forum Internal Engine
    Replies: 9
    Last Post: 03-06-2006, 07:12 AM
  5. roller rockers
    By lilicedout24 in forum Internal Engine
    Replies: 8
    Last Post: 12-15-2005, 09:17 AM

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
  •