Difference In 91-94 and 95-97 Headers

[CJREX]

I've noticed the 4.0 headers come in these 2 flavors.

What is the difference?

Can a '91 4.0 use the '95-'97 headers?

Thanks!

 

[Bird]

I've noticed the 4.0 headers come in these 2 flavors.

What is the difference?

Can a '91 4.0 use the '95-'97 headers?

Thanks!

The headers will bolt up to the engine with no problems - the difference is in the connector to the catalytic converter - different pattern on the 95-97.

Bird

 

[CJREX]

Just the info I needed!

Thanks!

 

[rickcdewitt]

what year did the exhaust port shape change.that would also matter

 

[Bird]

what year did the exhaust port shape change.that would also matter

98-00 heads had a smaller exhaust port - the earlier headers worked OK with them.

Bird