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Any LT1 knowledgable people here?

Discussion in 'The Garage' started by yunit, Mar 24, 2005.

  1. yunit

    yunit 1/2 ton status

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    Might be buying an LT1 for the new project and have a few questions.

    Do I need to make custom engine mounts to install this engine or does it have the same style mounts as the earlier 5.7's?

    What kind of power do this things actually make and does anyone have any good LT1 links?


    I am hitting Google right now looking for info, but if anyone has any good info to pass along...please do. Thanks.

    Pete.
     
  2. jac6695

    jac6695 1/2 ton status

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    The Lt1 has standard SBC mounts. Horsepower ranged form 260 in the B and D body cars (Caprice, Impala, Roadmaster, and Fleetwood) to around 285 in the F body cars (Camaro and Firebird/Trans Am), and 295-300 in the Vette.

    Good source of info is these message boards:
    http://impalassforum.com/noncgi/ultimatebb.php
    http://web.camaross.com/forums/

    Good wiring information and general LT1 stuff:
    http://shbox.com/1/4th_gen_tech2.html#1995_pcm_pinouts
    http://home.comcast.net/~spudmanmike/scrapbook.pdf
    http://www.geocities.com/lt1tech/
    http://www.automotiverebuilder.com/ar/ar99928.htm
    http://lt1s10.home.icq.com/wiring.html (used to work, might be down temporarily)

    These are a couple of good tuners with great reputations in the LT1 community:
    http://www.pcmforless.com/ (I used them and flashed my PCM from my laptop at home- cheap)
    http://www.madz28.com/

    These are sources of cables- I used AKM, the other is a newcomer
    http://www.akmcables.com/
    http://mastach.com/

    Free scanning software for OBD1:
    http://www.andywhittaker.com/

    Not so free software for OBD2:
    http://www.autotap.com/
    http://www.obd-2.com/

    These are comanies that sell engine parts for the LT1. Plenty of others out there:
    http://www.clearimageautomotive.com/welcome.htm
    http://www.cmotorsports.com/index.html
    http://www.delteq.com/ (Optispark replacement system)

    I am sure that you have heard of these guys, they have good swapping info:
    http://www.jagsthatrun.com/index.html


    That is about all that I can dig up for now. I have done the swap myself, and can probably help out of you need it. The LT 1 is awesome for what we do, plenty of horespower and torque (broad torque curve), but if I could afford it, I would most likely do an LS1 again. Let me know if you need anything else!
     
  3. yunit

    yunit 1/2 ton status

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    ****in sweet! :D

    Already started printing everything out at work, I better hurry up, tomorrow is my last day working here. :grin:
     
  4. dyeager535

    dyeager535 1 ton status Premium Member

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    Wouldn't be your last day because of printer misuse would it? lol :)
     
  5. yunit

    yunit 1/2 ton status

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    Nope, I resigned. And the printer we have in the network department is actually mine, I salvaged it from the scrap heap and repaired it. I am going to try my hardest to take it home with me tomorrow. :D
     
  6. Stoopalini

    Stoopalini 1/2 ton status

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    Are you getting the LT-1 from an F-body? If so, be careful with the Opti-Spark. It is very picky about moisture and is easily damaged by water.

    Thomas.
     
  7. yunit

    yunit 1/2 ton status

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    It is coming out of an Impala SS.
     
  8. sweetk30

    sweetk30 professional hooker Premium Member

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    the mount bosses on the block are the same. but the pass side has 1 extra, for the motor mount. the complet frt serp drive is mounted to the frt upper boss. and the mount is fliped upside down and mounts a bit diff. and the a/c pump is in the right side on the bottom and might need frame work to clear. also the p/s pump is on the pass side. and needs new lines to run to the left side. my friend swaped one in his 4x4 and he said never again in a 4x4. 2x4 yes mabye.
     
  9. jac6695

    jac6695 1/2 ton status

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    You are better off with the B body engine. It already has the vented Opti- pulls vacuum through it and is vented through the air filter ducting. Mine came out of a Caprice also- get as much of the wiring, air filter ducting, and hoses as you can. You will not be able to use the A/C compressor, but you need to buy an A/C delete pulley to go in its place for the serpentine to work.

    If you can get the power steering hoses, they will adapt easily to the K truck box and lines. Mine works well with my WTO hydro assist. You will need the throttle cable from the Impala to install in your truck, works perfectly. It might have oil cooler lines attached, I need to swap them for mid 90's K truck lines to work with my S10 radiator.

    I agree with SweetK30, not the best choice for 4 wheeling engine due to the Opti, but there is alternatives. Best to stay away from deep water, and have the ability to turn off the fan(s) if you do.
     
  10. clstolten

    clstolten 1/2 ton status

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    The vented opti came with 95 and up LT1's. My 95 Impala is having opti problems right now. The water pump has a weep hole that drains directly onto the optispark, and usually takes them out. Make sure your water pump is good. You could also convert to an opti-direct system which should eliminate most problems. Click here: http://www.delteq.com/

    Craig
     
  11. jac6695

    jac6695 1/2 ton status

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    Actually, the 94 and up B body cars got the vented Opti, F and Y body not until 95. Failing water pumps and any other sources of moisture (such as a leaking power steering hose on my Camaro) will kill an Opti, and the one thing to worry about with 4 wheeling in water. I have seen Optis last only 30-40,000 miles, and the one on my engine I am pretty sure is the original at 140,000+.
     

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