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Old 11-29-2012, 10:15 PM   #1
Lucky131097
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Turn 5.3 into 383?

I have an 03 Z71 with a 5.3 i also have an early vortec 5.7 block. My question is, could i build up a 383 short block out if the 5.7 block and swap it in place of the 5.3 block while leaving everything else the same?
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Old 11-29-2012, 10:25 PM   #2
cableguy0
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Re: Turn 5.3 into 383?

Nope. Nothing interchanges. The 5.3 is a much better engine and capable of making as much or more power than a 383 would. The ls bottom end is a lot more sturdy than the gen 1 stuff as well.
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Old 11-29-2012, 10:42 PM   #3
Lucky131097
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Re: Turn 5.3 into 383?

Thanks for the info. Any sugestions on the best and reasonably priced things to do to the 5.3 to get the horse power?
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Old 11-29-2012, 10:42 PM   #4
Clyde65
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Re: Turn 5.3 into 383?

Besides all that, the emissions nazis will hang you from the highest money tree!
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Old 11-29-2012, 10:43 PM   #5
Clyde65
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Re: Turn 5.3 into 383?

Cam it, get a tune, bigger exhaust and give it air to breath!
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Old 11-29-2012, 10:48 PM   #6
ProStreet68SB
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Re: Turn 5.3 into 383?

http://trickperformanceproducts.com/turbo_stage1.htm
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Old 11-29-2012, 11:04 PM   #7
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Re: Turn 5.3 into 383?

Thanks
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