Fleetwood LT1
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5.0 and 5.7 Discussion, Fleetwood LT1 in Cadillac Engine Technical Discussion; I have a 94 Fleetwood Brougham which, unfortunately, is currently motorless. I was curious what the advantages/disadvantages of swapping from ...
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    The13thMile's Avatar
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    Fleetwood LT1

    I have a 94 Fleetwood Brougham which, unfortunately, is currently motorless. I was curious what the advantages/disadvantages of swapping from the factory LT1 with a vette LT1, what the main differences are, and what problems I would run into in doing so. The brougham's tranny and driveline is factory. Thanks for the replies!

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    Re: Fleetwood LT1

    Im also considering just beefing up a rebuilt caddy LT1. Any suggestions on cams, chips, etc?

    By the way, nearly got 290,000 miles off of the previous LT1!
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    RBraczyk's Avatar
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    Re: Fleetwood LT1

    That is a nice looking car! I've got 283,000 on my TBI chevy, reliable engine.

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    Re: Fleetwood LT1

    Nice Fleetwood Brougham! Welcome aboard! And thank you for signing up!
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    Re: Fleetwood LT1

    As far as I know the only difference is that vette lt1s have aluminum heads as opposed to your iron ones. And HP may be different +/- 10 horses, depending on the year.

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    Re: Fleetwood LT1

    Not to mention the PCM/ECM's programming is different- ive heard of fleetwood owners have theirs reprogrammed to corvette specs.

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    Re: Fleetwood LT1

    THE13THMILE.....ARE THOSE 20"s OR 22"s ?

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    Re: Fleetwood LT1

    They're 22's... sorry about the picture quality though, ill see if i can get a better one up.

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    Re: Fleetwood LT1

    Here we go...
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    Re: Fleetwood LT1

    Nice car!!! A vette lt1 has aluminum heads where our cars have iron heads. Its been said that our iron heads actually flow better than aluminum heads when stock (about a 5% difference). Then you gotta consider the weight factor of our heads. Some people say the gain is cancelled out by the weight.
    A vette motor also is not cammed right for our cars extra weight anyway. If you don't wanna go crazy you could with a cam that will provide better low end torque which will work for our cars. crane has the 227 cam which is what I'm looking at for my caddy. there are a few others out there the zz3 cam, and gmpp 845 cam. Combined with a set of 1.6 roller rockers and and good set of valve springs that will take the lift, the car should run great!!!

    Good luck and welcome aboard...

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    Re: Fleetwood LT1

    13th mile.... car looks tight, what is the width of those rims? do they rub the skirt? ... after this upcoming winter, i might be upgrading to the extra 2 inches

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    Re: Fleetwood LT1

    Nah... the skirting is fine. The only scrubbing occurs on the front wheels when you turn the steering wheel lock to lock, but I've adjusted to it and really dont scrub all that often, well not enough to hurt anything any way. But if it werent for the rear skirts id be on spinners right now! ...Or you could go with 20s in the front and 22s in the back, that wouldnt look to bad either.

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    Re: Fleetwood LT1

    By the way, those extra two inches really make a big difference in appearance. Its way worth the little bit of scrub to me.

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    juiceE's Avatar
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    Re: Fleetwood LT1

    I Know, I Dropped Mine 1.5 Inches I Think...now If Id Get 22's I Wonder If Theyd Still Fit, Depending On The Tire Id Get

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    Re: Fleetwood LT1

    Just as a note. The Vette LT1 has 300hp; ours has 260hp...
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