Editing V6 Chevy 90 degree engines (section)
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==Rods== There are at least 4 different 4.3L rods that have two different weights, so be sure of what is being used if the parts come from different engines or the source is unknown. The 4.3L V6 engine has an even-fire sequence, occurring 120 degrees apart. This is accomplished by having a larger 30ยบ offset on the rod journal pairs. To gain back the strength that the wider offset takes away from the crank, the rod journal diameter is larger than the other V6 engines and also larger than the SBC, at 2.25", which makes them unique among the Chevy V6 and V8 engines. That means the 4.3L rods are not interchangeable with the traditional small block. The smaller 200/229 cid V6 rods aren't interchangeable either due to their narrower big ends.
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