Become a ltxtech.com member, Click here to register!
BP-Automotive

Results 1 to 9 of 9
  1. #1
    InActive Member


    Status
    Offline
    Join Date
    Mar 2015
    Name
    tk
    Vehicle
    1994 firebird formula
    Posts
    5

    Default iron vs aluminum headed engine

    Hey my formula has a iron headed lt in it what do these dyno at stock as compared to a aluminum headed engine

    Project phoenix
    94 formula a4 Iron headed lt1 1.5 roller tip rockers LT headers

  2. #2
    "The Rock"


    Status
    Offline
    Join Date
    Jul 2009
    Name
    Popo
    Vehicle
    1996 Impala with the heart of the old camaro. 1993 Corvette..
    Location
    Shillington, Pennsylvania, United States
    Posts
    61,345

    Default

    Well unless someone put iron heads on ur lt1... that motor is out of a b-body. If im not mistaken... those were about 265@ the crank.
    @TubbyFormy


    Our BIG MOMENT @ the 2012 LTXshootout

    http://www.facebook.com/photo.php?v=521756391174175

    1996 Camaro Z28: RIP 09/25/2016

    1994 Trans Am GT: SOLD 05/2017

    1985/1996GS clone: SOLD

    1996 Impala SS H/C, LT, with true dual exhaust, 4.10s, lowered, with CPT trans, many cosmetic mods, and a whole lot more to come...

    2002 Caddilac EscaladeL CAI, lowered, 6.0 , AWD..





  3. #3
    Xtreme Member


    Status
    Offline
    Join Date
    Nov 2012
    Name
    Shaun
    Vehicle
    1994 Formula
    Location
    Phillipsburg NJ
    Posts
    7,249
    Supporting Member

    Default

    260 hp crank 330lbft crank
    2021 Charger Scat 392
    1994 Firebird Formula 381 stroker - Carrying the torch! - 9.90 @ 134.3mph on a 200 shot

    The wrench/driver for LTConvert's 94 Z28- Ellwein 383/LE Trickflows/ D1SC / CPT Ultra Pro Race 4L60E
    10.78 @ 125mph. Shooting for 9.99 for Frank Cahall!

  4. The Following User Says Thank You to SSlowBoat For This Post:


  5. #4
    The Nitrous Outlet Junkie


    Status
    Offline
    Join Date
    Apr 2010
    Name
    Troy
    Vehicle
    1994 Firebird Formula
    Location
    moore, ok (south okc)
    Posts
    3,274

    Default

    the iron heads flow better than the aluminium heads stock to stock.... but the iron heads are about 20lbs heavier each side and hold heat better (heat soak) the reason it makes less power is the cam in the b-bodies is way smaller the the f-body and corvette cam.
    94 Formula "budget build" #thebeaterbird
    10.177 @128.31 on a lil 250 shot
    350, LT1, carb, LE grind cam, th400, 4k stall, ford 8.8 w/ 4.10s

  6. The Following User Says Thank You to zooguy For This Post:


  7. #5
    Xtreme Member


    Status
    Offline
    Join Date
    Nov 2012
    Name
    Shaun
    Vehicle
    1994 Formula
    Location
    Phillipsburg NJ
    Posts
    7,249
    Supporting Member

    Default

    Quote Originally Posted by zooguy View Post
    the iron heads flow better than the aluminium heads stock to stock.... but the iron heads are about 20lbs heavier each side and hold heat better (heat soak) the reason it makes less power is the cam in the b-bodies is way smaller the the f-body and corvette cam.
    And press in studs for rockers
    2021 Charger Scat 392
    1994 Firebird Formula 381 stroker - Carrying the torch! - 9.90 @ 134.3mph on a 200 shot

    The wrench/driver for LTConvert's 94 Z28- Ellwein 383/LE Trickflows/ D1SC / CPT Ultra Pro Race 4L60E
    10.78 @ 125mph. Shooting for 9.99 for Frank Cahall!

  8. #6
    InActive Member


    Status
    Offline
    Join Date
    Mar 2015
    Name
    tk
    Vehicle
    1994 firebird formula
    Posts
    5

    Default

    The reason I got this motor is because when I bought the car the engine had low compression I got this engine from a running trans am and when they pulled it that's when I realized that It had iron heads

    Project phoenix
    94 formula a4 Iron headed lt1 1.5 roller tip rockers LT headers

  9. #7
    InActive Member


    Status
    Offline
    Join Date
    Apr 2015
    Name
    Jon Becker
    Vehicle
    1995 Trans AM
    Location
    Birmingham, Alabama
    Posts
    11

    Default

    Ha! That motor has been around the block a few times!

  10. #8
    Xtreme Member


    Status
    Offline
    Join Date
    Apr 2012
    Name
    Mike
    Vehicle
    96 Z28, 95 Roadmaster
    Location
    Conshohocken, PA
    Posts
    1,862

    Default

    The flow difference is marginal between the two. I think it's like a 10 cfm advantage on the intake for the iron heads but the aluminums are inherently better because smaller chamber and screw in studs.
    96Z M6, ERE-383 #60, AFR 210s, LE cam, 9", Procharger D1, ???whp
    95 Roadmaster T-56 swap, LE1s, baby cam, 4.56s, "The Cammaster"
    95 Firehawk hooptie, bolt-ons and suspension

  11. #9
    The FABRICATOR!


    Status
    Offline
    Join Date
    Jul 2011
    Name
    Chris
    Vehicle
    1985 Monte Carlo SS
    Location
    southern illinois
    Posts
    7,164

    Default

    Anytime I look at an iron headed lt1 I always check to make sure it says "5.7" on the back and now "4.3". I bought a baby lt1 by accident once. Fortunately the guy (after convincing him they did exist) gave me a generous portion of my money back.
    Chris
    1985 Monte Carlo SS
    Mods: 9:1 383 LT1, Ported Trick Flow heads, D1SC Procharger, 4L80E, 3.50 9"
    Check out the M122 MCSS build thread here!

Tags for this Thread

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
  •