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Is the tranny for the 4J too torquee for the 4EZ tranny


Not sure what you mean here exactly, but the 4JB1-T transmission has got a different bellhousing than the 4ZE1, although they seem to be identical otherwise. In fact, the bellhousings are almost the same between the two except the starter and clutch release are on opposite sides.

It's possible that the 4JB1 would bolt up to the 4ZE1 transmission, but you'd have problems with the starter (as it would want to go right where the turbo and exhaust are on the diesel) and probably the clutch lever as well.

1988 Isuzu Trooper LS
2.8l Isuzu 4JB1-TC intercooled turbo diesel
www.dieseltrooper.blogspot.com