W , ▁J T ▁ 4 2 C W ▁and ▁J T ▁ 4 2 H W - HS ▁family ▁which ▁were ▁built ▁in ▁various ▁configurations ▁( including ▁ 4 ▁and ▁ 6 ▁ax le ▁variants ) ▁for ▁both ▁Israel ▁Rail ways ▁and ▁English , ▁Wel sh ▁and ▁Scottish ▁Railway ▁( as ▁the ▁Class ▁ 6 7 ); ▁these ▁locomot ives ▁used ▁the ▁same ▁G M - E MD ▁engines ▁and ▁tra ction ▁mot ors ▁and ▁had ▁similar ▁body ▁shell s ▁to ▁the ▁products ▁later ▁built ▁at ▁the ▁Val encia ▁plant ▁under ▁V oss lo h ' s ▁ownership . ▁ ▁In ▁ 2 0 0 4 ▁the ▁Val encia ▁plant ▁left ▁Al st om ▁ownership ▁and ▁was ▁bought ▁by ▁V oss lo h ; ▁because ▁of ▁this ▁change ▁of ▁ownership ▁there ▁are ▁many ▁similar ities ▁between ▁the ▁V oss lo h ▁Euro ▁locomot ives , ▁the ▁Al st hom / GM - E MD ▁J T 4 2 ▁locomot ives . ▁ ▁After ▁the ▁change ▁of ▁ownership ▁the ▁next ▁product ▁to ▁roll ▁off ▁the ▁lines ▁at ▁Val encia ▁was ▁the ▁R EN FE ▁Class ▁ 3 3 4 ▁locomot ives ▁which ▁are ▁( ex cluding ▁minor ▁differences ) ▁I ber ian ▁gauge ▁versions ▁of ▁the ▁later ▁V oss lo h ▁Euro ▁locomot ives . ▁ ▁Technology ▁ ▁The ▁common ▁factor ▁between ▁this ▁class ▁of ▁locomot ives ▁and ▁its ▁prede cess ors ▁is ▁the ▁General ▁Mot ors ▁Elect ro - mot ive ▁( now ▁Elect ro - M ot ive ▁Dies el ,