[s10-den]

I have a 97 gmc zq8 susp.4.3 auto ...buddy has the same truck but ex.cab.Mine has engine code w and his has a Y what is the difference?

 

[rat]

There is no Y, there is w and x. '96 and up are all the same no matter what the vin.

 

[redzr2]

There is only X and W........X being the regular 4.3 with 180 h.p. and W being the high output model with 190 h.p.

 

[s10-den]

sorry guys you are correct....so mine with the W has the extra 10.thanks