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S475 Turbo 5.3 Build

53783 Views 172 Replies 29 Participants Last post by  oltmanjr
The Car with the big block





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Sold the big block getting ready for the Junk yard 5.3


5.3 with car intake

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Notched the frame for the 1998-2002 Fbody oil pan



Motor in for the first time



S400 75/83 1.10 A/R from Forced Inductions


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Looking for a good location for this



Welded VBands to the stock truck manifolds



Got the converter back from Precision Industries



I have a lot more pictures!
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Love it! That's where I think most of us single turbo guys put ours and relocate the battery.

Theres an LSx Engine section a little lower down in the mechanical section. Where the LS build threads hang out.
Very nice Jim. Those factory manifolds weld up real nice.

Is that a t4 or t6?
Love it! That's where I think most of us single turbo guys put ours and relocate the battery.

Theres an LSx Engine section a little lower down in the mechanical section. Where the LS build threads hang out.
When I click on LSX Engine there are NO threads.
I like it. Keep the pic's coming.
Very nice Jim. Those factory manifolds weld up real nice.

Is that a t4 or t6?
I was surprised how well they did weld . Its a T6
It would be nice if this gets moved to the LSX section but when I click on the LSX section it doesn't show me any threads until I search for something in that section or change the display options . Help would be appreciated.
So Jim, what were the old motor specs and what kinda times was she turning? Whats the intent for the new combo - race/street? Doing anything internal?
So Jim, what were the old motor specs and what kinda times was she turning? Whats the intent for the new combo - race/street? Doing anything internal?
Old engine
11.18 et 1.45 60ft 118 mph
10.51 et 1.35 60 ft 122 mph on a 125 shot
Now On E85
11.0:1 454
781 HEADS PORTED
VOODOO 60234
EDELBROCK AIRGAP HOLLEY 850

The goal is 10.50's and drive it everywhere.
Keep up with the pics. Subscribed.
It would be nice if this gets moved to the LSX section but when I click on the LSX section it doesn't show me any threads until I search for something in that section or change the display options . Help would be appreciated.

Sometimes the default display option is posts in the last day, change it to something longer for sections that are less frequently posted in.
Sometimes the default display option is posts in the last day, change it to something longer for sections that are less frequently posted in.
Thank you . I found this in an other thread and changed it in the USER CP

Default Thread Age Cut Off You may specify a time period from which to display threads. Threads older than the age you specify will not be shown. Default Thread Age Cut Off:
You are going to love it! With a T6 you will more than likely need to remove the inner fender wells. It will give you a ton more room. Don't be afraid to run hotside tucked under the fender. There is a ton of room under there and it hides the piping really well. As long as you wrap it there will be no problems with heat distortion.

What transmission are you going to run? If you use a th400, th350, or PG, you can use the stock flywheel from the 5.3. You set your convertor in the snout hole and take a permanent marker and trace around where the convertor bolts are. Then use a dremel tool and take a little off at a time until the convertor bolts fit in tight.

Some 5.3's have a spacer behind the flywheel. Pay attention to if yours has one or not. Some of the flywheels are flat and need a spacer the others are not and do not need the spacer.

That's a good looking car. 10.50's will be a joke with that. Guaranteed!
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nice looking bar.
When I click on LSX Engine there are NO threads.
Yup. If there hasn't been any posts in the last day, there will show no threads. But its active fairly frequently. And the more the merrier! Plenty of folks with an active build thread going on right now. Will enjoy watching your progress. Looks like you've got a heck of a start!
You are going to love it! With a T6 you will more than likely need to remove the inner fender wells. It will give you a ton more room. Don't be afraid to run hotside tucked under the fender. There is a ton of room under there and it hides the piping really well. As long as you wrap it there will be no problems with heat distortion.

What transmission are you going to run? If you use a th400, th350, or PG, you can use the stock flywheel from the 5.3. You set your convertor in the snout hole and take a permanent marker and trace around where the convertor bolts are. Then use a dremel tool and take a little off at a time until the convertor bolts fit in tight.

Some 5.3's have a spacer behind the flywheel. Pay attention to if yours has one or not. Some of the flywheels are flat and need a spacer the others are not and do not need the spacer.

That's a good looking car. 10.50's will be a joke with that. Guaranteed!
I'm using my th400 . I sent the converter back to Precision Industries for them to restall it for the turbo and they changed the cover to work with the LS
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