2000 model 4.3
#3
I forget when the knock sensor and EGR change over was, but they are fairly easy to spot the differences if they are indeed different. IIRC, it was sometime in mid-02.
The knock sensor on the later engine is held on by a fairly small metric bolt and has two wires while the earlier engines used a single wire knock sensor with a tapered thread boss on the underside that threaded directly into the block. If you have the later design (two wire sensor with metric bolt), then you will want to have an adapter made to bolt your original sensor to an earlier (96 thru mid-02 IIRC) block.
The EGR valve will either be there on your current engine or not (front/center of the LIM). If not, then swapping the LIM on up from your engine to the donor should allow you to go as far back as '96.
I believe that those are the only two changes that could give you headaches if not properly accounted for before dropping the replacement engine in.
The knock sensor on the later engine is held on by a fairly small metric bolt and has two wires while the earlier engines used a single wire knock sensor with a tapered thread boss on the underside that threaded directly into the block. If you have the later design (two wire sensor with metric bolt), then you will want to have an adapter made to bolt your original sensor to an earlier (96 thru mid-02 IIRC) block.
The EGR valve will either be there on your current engine or not (front/center of the LIM). If not, then swapping the LIM on up from your engine to the donor should allow you to go as far back as '96.
I believe that those are the only two changes that could give you headaches if not properly accounted for before dropping the replacement engine in.
#5
I forget when the knock sensor and EGR change over was, but they are fairly easy to spot the differences if they are indeed different. IIRC, it was sometime in mid-02.
The knock sensor on the later engine is held on by a fairly small metric bolt and has two wires while the earlier engines used a single wire knock sensor with a tapered thread boss on the underside that threaded directly into the block. If you have the later design (two wire sensor with metric bolt), then you will want to have an adapter made to bolt your original sensor to an earlier (96 thru mid-02 IIRC) block.
The EGR valve will either be there on your current engine or not (front/center of the LIM). If not, then swapping the LIM on up from your engine to the donor should allow you to go as far back as '96.
I believe that those are the only two changes that could give you headaches if not properly accounted for before dropping the replacement engine in.
The knock sensor on the later engine is held on by a fairly small metric bolt and has two wires while the earlier engines used a single wire knock sensor with a tapered thread boss on the underside that threaded directly into the block. If you have the later design (two wire sensor with metric bolt), then you will want to have an adapter made to bolt your original sensor to an earlier (96 thru mid-02 IIRC) block.
The EGR valve will either be there on your current engine or not (front/center of the LIM). If not, then swapping the LIM on up from your engine to the donor should allow you to go as far back as '96.
I believe that those are the only two changes that could give you headaches if not properly accounted for before dropping the replacement engine in.
Last edited by LesMyer; 01-19-2017 at 03:11 PM.
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