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Conversions & Swaps LSX Engines in Non-LSX Vehicles
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Quick question..

   
Old Jul 10, 2011 | 12:00 AM
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Default Quick question..
I'm swapping in a 5.3 into an 81 Malibu.. previously I read that I could just used a vette filter/regulator and run a single feed line.. easy enough..

However, some 5.3s had a return line. Do I just cap the factory return and run a vette regulator or do I run a normal feul filter, and run an extra return line?

Thanks

-Randy
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Old Jul 10, 2011 | 12:27 AM
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Or you could put an ls1 intake with returnless rail and the vette filter/reg. It'll look much cleaner, and won't need the extra line run for return from the front.
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Old Jul 10, 2011 | 04:58 PM
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If your gonna keep the 5.3 intake, you dont need the vette filter. Just get a 5.3 filter and run the return back to the tank.
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Old Jul 10, 2011 | 05:56 PM
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Can do it a number of ways, but I wouldn't recommend just blocking off the return on return-style rails. Some truck rails are non return style and would work better with the Vette filter/ regulator if you are aiming to just use one fuel line. PM me if you want some of those rails, I believe I have some.
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Old Jul 10, 2011 | 08:14 PM
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Originally Posted by mice13
Or you could put an ls1 intake with returnless rail and the vette filter/reg. It'll look much cleaner, and won't need the extra line run for return from the front.
Which year vette/fbody had a returnless rail and would I need to swap injectors or can I retain my truck injectors?
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Old Jul 10, 2011 | 09:15 PM
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My setup was off a 98 T/A. Not sure if you can still use the truck inj. but im sure you can get the ls1 intake/rails/inj. for cheap.
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Old Jul 11, 2011 | 10:52 AM
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Originally Posted by mice13
My setup was off a 98 T/A. Not sure if you can still use the truck inj. but im sure you can get the ls1 intake/rails/inj. for cheap.
Ive read that I also have to relocate tensioner and change water pumps to clear intake
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Old Jul 11, 2011 | 11:05 AM
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Some people rotate or bend the filler neck on the water pump so it clears the intake, and are able to use their truck acc.
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Old Jul 11, 2011 | 11:33 AM
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Hate to butt in but,,,, what year or type vette regulator and filter are u all using? and where do i get 1?im using an 08 5.3 with square rails and no return.thanks
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Old Jul 11, 2011 | 11:37 AM
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I got my vette regulator/filter at oreilly auto parts, i think i asked for a 00-03 vette one.
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