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Emissions Component

Chevy Tahoe Engine Swapped into a Jeep CJ7 Exhaust Pipes

I'm doing an engine swap: 5.3 liter engine from a 2000 Chevy Tahoe swapped into a 1985 Jeep CJ7. I nned to know if I can run dual exhaust with dual catalytic converters?

I am doing an engine change in a 1985 CJ7, the engine is form a 2000 Model year Chevy Tahoe. I am swapping the engine, transmission, ECM, and wiring harness from the Tahoe. I am keeping the Jeep smog legal and will be going to the Referee. I am at a point where the Jeep needs to go to the exhaust shop. Originally the Tahoe has 2 catalytic converters, one for each bank, I will be placing two as well. There is no 3rd CAT so can I run dual exhaust? Due to space limitations it would be MUCH easier, but I don't want to spend the money twice on getting this done. Thanks for your help!!!


The smog check referee is going to require you strictly conform to the Chevy Tahoe emission design, meaning they will not allow a true "dual" exhaust system when the host engine (emission system) was not designed as one. We recommend searching the Jeep Forums online for others who have attempted similar engine swaps.

posted by SmogTips Support 07-30-2013 10:40 AM

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