4.3 innerchange
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Joined: Jan 2022
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4.3 innerchange
Hey guys,
I have a 2001 blazer that the engine timing belt skipped and the engine itself was obviously tired. The rest of the blazer itself is in quite excellent condition so for me its worth dropping a new engine in. All the running gear has been recently serviced or repaired, the tranny has always been treated kindly.
Im told that only a 2001/2002 4.3 is directly inner changeable. I have access to a 4.3 2007 would there just be so much involved to install that its best to stick with the years the wrecking yards say are the only direct inner change?
I have a 2001 blazer that the engine timing belt skipped and the engine itself was obviously tired. The rest of the blazer itself is in quite excellent condition so for me its worth dropping a new engine in. All the running gear has been recently serviced or repaired, the tranny has always been treated kindly.
Im told that only a 2001/2002 4.3 is directly inner changeable. I have access to a 4.3 2007 would there just be so much involved to install that its best to stick with the years the wrecking yards say are the only direct inner change?
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Joined: Oct 2014
Posts: 4,343
From: North Central Indiana
Hey guys,
I have a 2001 blazer that the engine timing belt skipped and the engine itself was obviously tired. The rest of the blazer itself is in quite excellent condition so for me its worth dropping a new engine in. All the running gear has been recently serviced or repaired, the tranny has always been treated kindly.
Im told that only a 2001/2002 4.3 is directly inner changeable. I have access to a 4.3 2007 would there just be so much involved to install that its best to stick with the years the wrecking yards say are the only direct inner change?
I have a 2001 blazer that the engine timing belt skipped and the engine itself was obviously tired. The rest of the blazer itself is in quite excellent condition so for me its worth dropping a new engine in. All the running gear has been recently serviced or repaired, the tranny has always been treated kindly.
Im told that only a 2001/2002 4.3 is directly inner changeable. I have access to a 4.3 2007 would there just be so much involved to install that its best to stick with the years the wrecking yards say are the only direct inner change?
Later 4.3s have a different crank sensor/reluctor that makes them incompatible with a 2001 Blazer. Earlier than 2001 4.3s have a different knock sensor mounting hole in the block. If you can adapt the block to use the 2001 knock sensor, then 1996-2000 engines will also work.
Last edited by LesMyer; Jan 4, 2022 at 10:45 AM.
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