4.3 W or Z engines
#1
4.3 W or Z engines
Hi can any one tell me if the 1994 4.3 engines code W and Z engines will inter change as far as long blocks go.
#2
No. The heads are different on the code W. The W has threaded rocker arm studs and the Z has pressed in studs although MAY have threaded studs. This is straight from the factory service manual for a 94 S/T series truck & Blazer.
#3
They may still be interchangable though. I know I would rather have the threaded studs if I could choose.
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Mr Blazer LT
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01-06-2008 04:07 PM