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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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.

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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Re: Turn 5.3 into 383?
 

Besides all that, the emissions nazis will hang you from the highest money tree!
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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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Re: Turn 5.3 into 383?
 

Re: Turn 5.3 into 383?
 

Thanks
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