Results 1 to 15 of 15

Replacing broken Ls1 engine -- comment please

This is a discussion on Replacing broken Ls1 engine -- comment please within the Internal Engine forums, part of the LSx Technical Help Section category; At a recent road racing drivers school, I blew up my LS1 engine. For the last 3 weeks, I have ...

  1. #1
    Member
    Join Date
    Aug 2005
    Location
    Newport, Mi.
    Posts
    116

    red
    1999 Camaro SS

    Replacing broken Ls1 engine -- comment please

    At a recent road racing drivers school, I blew up my LS1 engine. For the last 3 weeks, I have been researching what to replace it with. I have come up with the following:
    L92 block finished bored to 4.065" (or 4.068"?)
    Callies CompStar 4.0" stroker crank
    Callies ComStar 6.125" H-beam rods
    Diamond or other pistons
    ==== 416 cu.in.

    BTW: SDPC has a short block like this.

    I have not decided on the cam.

    Also, I want to re-use my CompCams 921 dual valve springs, and 1.85 ratio roller rockers. I think that my Patriot Performance heads will not flow enough air, therefore, I will need new heads, maybe ET Performance.

    Any comments or tips?

    EDIT already: I will also re-use the hi-flow air lid, GMAF, LS6 intake, may need a bigger TB, as well as, 36#/hr injectors.
    Last edited by Doc99SS; 09-10-2007 at 06:07 PM. Reason: forgetfulness
    '99 Camaro SS; 6-spd, LS2 402 stroker short block, PP stage 3 heads, GMS MAF, 244/248 cam, FLP headers, Borla catback, 4.10 gears, LS6 intake, 39#/hr injectors, Pro 5.0 shifter, subframe connectors, Comp Cams 1.85 rr,
    Best ET: 12.23sec (2.000sec 60'), trap spd:117.5mph, with the LS1 engine.

  2. #2
    Junior Member
    Join Date
    Apr 2006
    Location
    MINNESOTA
    Posts
    77

    BLUE
    2000 SS CAMARO

    If you are dead set on keeping the ls6 intake, those new ET heads will not gain you much over the other heads.

    I would go with a ported fast on that setup, unless you race ALOT, and then I would go with a Beck sheetmetal......

  3. #3
    LS1-TA schrysler's Avatar
    Join Date
    Jan 2006
    Location
    utah
    Age
    34
    Posts
    427

    Red
    1998 Trans Am Vert

    You Cant Use Those L92 Heads On A Ls1
    1998 Trans Am Vert, M6, Soon to be full of goodies......

  4. #4
    Nitrous Tuner LS2Tuner's Avatar
    Join Date
    Aug 2006
    Location
    WestCoast AZ-CALI
    Posts
    4,763

    Silver
    05 Goat SMASHED

    With that much C.I. why not just run a L92 style head?
    I guarantee it out flows those Patriots stock!
    Don't be afraid of the bottle!!! Be afraid of your tune!!!

  5. #5
    Firebird Encyclopedia 9T8W66's Avatar
    Join Date
    Oct 2006
    Location
    St. Clair Shores. Michigan
    Age
    49
    Posts
    1,605

    Navy Blue Metallic
    `98 Formula M6 HdTp

    Quote Originally Posted by LS2Tuner View Post
    With that much C.I. why not just run a L92 style head?
    I guarantee it out flows those Patriots stock!

    Basically make yourself a stroked LS3
    Craig
    Semi Retired Street Racer
    2012 Lava Red Mustang GT Coupe Brembo/3.73's
    Build Date 3/17/11, Last Lava Red GT

    Gone but not forgoten
    NBM `98 Formula M6 HdTp
    1 of 1 Build Date 3/12/98

  6. #6
    Member
    Join Date
    Aug 2005
    Location
    Newport, Mi.
    Posts
    116

    red
    1999 Camaro SS

    Thank you for the replies.

    1) Good comment on the LS6 intake,, does anyone have comparitive flow numbers for LS style intakes? How much better is a ported FAST intake over the LS6 intake?

    2) I have been talked out of re-using by PP heads, the ET heads that I refer to are not L92 type heads. I do not want to use the L92 type heads because of the offset intake rocker. I would really like to re-use my 1.85 ratio CC full roller rockers.

    3) I dont know anything about the LS3, is it even out yet? I would prefer to stick to stuff thats been around for at least a couple years for development.

  7. #7
    Member C&Cbird's Avatar
    Join Date
    Apr 2007
    Location
    Oklahoma City, Oklahoma
    Age
    33
    Posts
    450

    Black
    1998 Trans Am

    If you want the extra power, the FAST intake is worth it. I've seen FAST 90mm pick up from 10 to almost 20 horse over the LS6. If your going to race it a lot and see very little street action, a sheet metal would probably be better.

  8. #8
    Nitrous Tuner LS2Tuner's Avatar
    Join Date
    Aug 2006
    Location
    WestCoast AZ-CALI
    Posts
    4,763

    Silver
    05 Goat SMASHED

    Quote Originally Posted by C&Cbird View Post
    If you want the extra power, the FAST intake is worth it. I've seen FAST 90mm pick up from 10 to almost 20 horse over the LS6. If your going to race it a lot and see very little street action, a sheet metal would probably be better.
    The FAST intake is designed by WILSON, that is one of the grand daddy's of sheet metal intakes.
    Thought I would share that with you.

  9. #9
    Member C&Cbird's Avatar
    Join Date
    Apr 2007
    Location
    Oklahoma City, Oklahoma
    Age
    33
    Posts
    450

    Black
    1998 Trans Am

    I know, Wilson builds some awesome sheet metal intakes, but for a street car you don't usually want a sheet metal and most people don't want to drop that kind of money on one. I know I would if I had the extra dough to toss around.

  10. #10
    Member
    Join Date
    Aug 2005
    Location
    Newport, Mi.
    Posts
    116

    red
    1999 Camaro SS

    Thank you for the replies.

  11. #11
    Member hmorris7000's Avatar
    Join Date
    Jun 2007
    Location
    Alabama
    Posts
    142

    BLACK
    02 CAMARO SS a4

    i would put a ls6 in it and use the partrs that work of the ls1 to the ls6 including the intake wont be that much trouble cause the engine hooks right up to the ls1 computer in the link listed u can get a brand new ls6 for $3000 just my.2 cents... http://www.crateenginedepot.com/stor...-P1625C63.aspx

  12. #12
    Senior Member slims00ls1z28's Avatar
    Join Date
    Apr 2007
    Location
    TN
    Posts
    1,212

    2005 GTO M6 Black
    2000 Z28 A4 Red

    L92 heads+L76intake will more than make up any loss from your rockers and you will save boatloads of money and support way more HP. Hell GM sells the L76 intake with 90mm throttle body, rails and 39# injectors for around 550$ last I checked (GM part # 12590123 )and the L92's are cheap as well. With the money you could save going that route you can get the roller rockers for the L92's. Thats the route I plan on going with on my engine replacement only I'm just going with an LS2 402. All together I priced roughly 5K for all reusing my cam and valvetrain.
    Last edited by slims00ls1z28; 09-15-2007 at 06:40 AM.
    My Toy 00 Z28 1SC A4 - MS3 cam with supporting valvetrain, Milled LS6 heads, LS7 lifters, , ARP rod and mains, All free mods, pacesetters, True duals, moser 9 with 4.11's and Detroit Locker, Vig 3600 tuned, tubular SFC,adj PHR, LCA, adj TA, PHR reloc, LCA reloc. all with poly bushings, ZR1's and Nitto DR's (315).

    My other toy 05 GTO LS2 M6- Comp XR269HR cam, 918's, hardened pushrods, Dart Pro 1's, pacesetters, X-pipe, flowmaster 1 chambers, TSP oil pump, Tick master cylinder. Pedders RR bushings, end links, SB bushings, tie rods and strut mounts, total performance poly F&R bushings. Polk DVC 12", Infinity Kappa 6.5 component and 6x9's with corresponding amps.

    Her toy 77 F100-6.6/c6. All original (for now)

  13. #13
    Rodzilla Tha Cavity Filla zero_proto's Avatar
    Join Date
    Sep 2006
    Location
    San DEEEE Eggo
    Age
    33
    Posts
    2,985

    teal
    99 Z28 with an SS complex

    yeah can't really beat that deal, l92 heads are the way to go, they are based off of the ls7 head.

  14. #14
    Member
    Join Date
    Aug 2005
    Location
    Newport, Mi.
    Posts
    116

    red
    1999 Camaro SS

    Does anyone have comparison flow numbers for the LS1, LS6, FAST, and L76 intakes?

    Another ?: Would my LS1 harness and TPS work with the L76 intake & TB ?

  15. #15
    Junior Member
    Join Date
    Apr 2006
    Location
    MINNESOTA
    Posts
    77

    BLUE
    2000 SS CAMARO

    Harness yes, with some slight modifications. However you will have to get a different TB as the L76 TB is a drive by wire and you need a cable TB.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. HOW TO: Replacing a Broken Seat Belt Guide
    By BANDITCAR in forum General Help
    Replies: 32
    Last Post: 08-12-2016, 05:19 PM
  2. Broken Twin-Turbo LQ9 6.0L Engine - From A Pinto!
    By Ed Blown Vert in forum General Help
    Replies: 0
    Last Post: 12-24-2013, 06:30 AM
  3. Need help replacing an engine.
    By banditgirl78 in forum Western Members
    Replies: 10
    Last Post: 12-07-2009, 04:48 PM
  4. 92 firebird 3.1 v6 replacing engine
    By jmatt07 in forum Almost Anything Goes
    Replies: 16
    Last Post: 02-20-2009, 03:54 PM
  5. Engine coolant light sensor.... worth replacing?
    By JehalinTA in forum General Help
    Replies: 12
    Last Post: 06-29-2007, 02:53 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
  •