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06-21-2010, 10:52 PM
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#1 |
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Registered User
Join Date: Jun 2007
Location: Houston, TX
Posts: 230
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aluminum 5.3 vs iron block help decide guys
Ok guys I have a dilema here. Don't know what to buy. I can buy either a 5.3 from a 05 truck with 35k miles on it for 600 bux complete swap less tranny or I can buy a regular 5.3 or even a 6.0 swap complete for about the same. I just don't know if the aluminum swap is good for my 81 short wheel base 2 wd stepper. Any pros and cons on the aluminum block vs iron block besides the weight wich I am not that worried about. Thanks in advance.
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81 chevy stepside 6.0/t56 swap in progress....  81 chevy silverado k5 2wd 350 tpi and 700r4.. SOLD 07 chevy colorado "work truck" SOLD 02 chevy silverado z71 off road package |
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06-21-2010, 11:42 PM
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#2 |
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Happy to be here
 
Join Date: Mar 2000
Location: Cypress, TX
Posts: 39,021
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Re: aluminum 5.3 vs iron block help decide guys
If your planning on building it, go for the 6.0. Heads, cam, intake and tune puts you at 500hp.
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Follow me on Facebook and Instagram @N2trux.com Articles- "Jake" the 84 to 74 crewcab "Elwood" the77_Remix 85 GMC Sierra "Scarlett" "Refining Sierra" |
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06-22-2010, 12:47 AM
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#3 |
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Registered User
Join Date: Aug 2006
Location: Florida
Posts: 1,684
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Re: aluminum 5.3 vs iron block help decide guys
go 6.0!
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1986 C10 SWB 6.0/6l90e Miami...Flee it like a native |
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06-22-2010, 01:16 AM
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#4 |
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BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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Re: aluminum 5.3 vs iron block help decide guys
Any modern engine is an upgrade from an iron block. My ZZ4 runs aluminum heads. Are you doing a fuel injection or carb swap on the LS engine? A fuel injected motor is the best option. A 5.3 is great for a daily driver. A 6.0 for power, towing, and tire shredding. If I had started with a better truck, I would have gone 6.0 FI all the way.
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