Engine & Internal Chat about beefing up your Blazer's engine insides here.

curious on similarities

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Old 02-21-2011, 10:26 AM
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just wondering how much the 4.3 changed throughout the years, obviously alot with the intake/fuel delivery. But how much did the block/crank/pistons/heads and all that other good stuff change?

are the new(er) 4.3's in full size trucks just the x vin 4.3? did they ever address the intake gasket problems?

also, i know why these got the name "vortec" for swirling the air/gas mixture, but where and how does this happen?
 
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Old 02-21-2011, 11:46 AM
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Old 02-21-2011, 01:10 PM
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ah, thanks for the link, i remember seeing it a long time ago.
 
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Old 06-26-2011, 02:48 AM
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That is a lot of good info. I have plans of getting a set of cylinder heads from the local u-pull and pay. I plan on porting and polishing them, replacing the valves with some swirl polished ones and putting some roller rockers on them. Imagine how pissed I would be if I went through all that to find out I bought the wrong heads for my 1993 VIN W?
 
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