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LT1 Conversion on a 1994 Silverado

This is a discussion on LT1 Conversion on a 1994 Silverado within the Performance forums, part of the General Discussion category; I have a 94 Silverado with a 4.3 V6. I bought a LT1 engine an i started to install the ...

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    LT1 Conversion on a 1994 Silverado


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    I have a 94 Silverado with a 4.3 V6. I bought a LT1 engine an i started to install the engine but the engine doesn't fit. I would like 2 know how could i make that engine fit on the truck. The problem is that the AC Compressor is on the botton part of the engine and it doesn't let the engine fall the mounts. If anybody could help explain to me what too do.

    Thank you

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    Needs project money chevyz71man's Avatar
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    Re: LT1 Conversion on a 1994 Silverado

    umm.... put your brackets on the lt1....or get rid of the a/c
    1994 ECSB SAS 7" lift, satin black h2 wheels, 36" IROKS, 98 Interior
    Built 383 and Built 4l60E
    2007 Yamaha midnight warrior

  3. #3
    If its broke don't fix it Joe Dirt's Avatar
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    Re: LT1 Conversion on a 1994 Silverado

    Get the Corvette brackets and compressor if you want to keep the A/C. It relocates all of your engine acessories to the driver side of the engine bay. Don't forget that you'll need the Corvette crank pulley as well due to the 'vette acessories sitting out about an inch further than the Camaro/Caprice style brackets. You'll also need the 'vette valve covers to fit the alternator in it's mounts if you do the 'vette conversion. Have a look in my galley to see what a proper LT1 swap should look like.
    Last edited by Joe Dirt; 08-22-2006 at 06:40 PM.
    1990 Chevy RCSB 1500 - LT1 swap, DJM 4/6
    1994 Caprice 9c1 - Stock, 14.326 @ 94.20 MPH
    1993 Mustang LX Coupe 5.0 - Stock, 79,000 miles
    1986 Buick Regal Limited - Stock, Olds 307

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    Resident FSC Canadian CHEV4LIFE's Avatar
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    Re: LT1 Conversion on a 1994 Silverado

    you can put in a 1LE a/c delete pulley and notch the frame a bit for it to fit as well, imho the corvette brackets are WAY overpriced and not worth it, i am about to do this swap in a 96, checkout my 302 link in my sig

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    If its broke don't fix it Joe Dirt's Avatar
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    Re: LT1 Conversion on a 1994 Silverado

    True you could do the A/C delete pulley, but then you won't have A/C, and I personally think that it's a half assed way to do the swap, JMHO. I don't like the place or the way the frame has to be notched. If you spend the money and do it the right way the first time around you'll have the added bonus of A/C (good for the summertime around here) an un-notched frame, and the 'vette parts just look way cleaner than any of the alternatives IMO.
    1990 Chevy RCSB 1500 - LT1 swap, DJM 4/6
    1994 Caprice 9c1 - Stock, 14.326 @ 94.20 MPH
    1993 Mustang LX Coupe 5.0 - Stock, 79,000 miles
    1986 Buick Regal Limited - Stock, Olds 307

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    Re: LT1 Conversion on a 1994 Silverado

    Hey Joe - Very nice looking swap!

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    If its broke don't fix it Joe Dirt's Avatar
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    Re: LT1 Conversion on a 1994 Silverado

    Thanks for the compliment.
    1990 Chevy RCSB 1500 - LT1 swap, DJM 4/6
    1994 Caprice 9c1 - Stock, 14.326 @ 94.20 MPH
    1993 Mustang LX Coupe 5.0 - Stock, 79,000 miles
    1986 Buick Regal Limited - Stock, Olds 307

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    king rigger reppin CAF I DjLunchbox's Avatar
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    Re: LT1 Conversion on a 1994 Silverado

    joe, i'm putting together an LT1 swap thread, i'll want your input, so post up when you see it

    i agree with joe dirt on the a/c delete pully, but i didn;t want that compressor robbing any power, so i left it on there and notched the frame. IMO, if you want show stopping looks, and easy to work on setups, go with www.streetandperformance.com setups. i wish now more than ever that i went with one during my build. i do get lots of compliments on my frame notch though :LOL: everyone seems to think it looks clean
    1989 gmc sierra, 383 LT1 stroker, T56 , spec stage 3, eaton 4:10 posi, PST bushings,kp 6 link, conti's, the usual air stuff, some nice smooth imodium green sealer, some old 17's and BAM...a money pit!




  9. #9
    If its broke don't fix it Joe Dirt's Avatar
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    Re: LT1 Conversion on a 1994 Silverado

    No problem, I'll be on the lookout for the LT1 swap thread.

    Thought I'd add this comment while I'm at it, when the A/C is off it shouldn't be robbing any horsepower. Even if it did you could just get a short belt to bypass the A/C and P/S for when you're racing. As far as horsepower robbers go the P/S does a lot more of it than the pulley on the air compressor, seeing as how when the A/C is off the pulley on the compressor robs about as much power as an idler pulley does, which is minimal if any at all. The shortbelt trick, which I normally only use to bypass the P/S is in some cases worth about 1/10th of a second at the track.
    Last edited by Joe Dirt; 08-23-2006 at 10:55 PM.
    1990 Chevy RCSB 1500 - LT1 swap, DJM 4/6
    1994 Caprice 9c1 - Stock, 14.326 @ 94.20 MPH
    1993 Mustang LX Coupe 5.0 - Stock, 79,000 miles
    1986 Buick Regal Limited - Stock, Olds 307

 

 

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