LT-4 CE

Is there a differene between the tubing size in an LT-1 vs. and LT-4. I am looking for an exhaust for my LT-4 and want to make sure there is not problem if I were to buy mufflers from and LT-1 owner or from a company offering kits for LT-1.

Thanks

silver & red CE

LT1 and LT4 exhaust systems are the same size, the only difference between them is that the LT4 system has a cross over pipe by the resonator (as do some late 95 6 speed LT1 systems).

Eric

LT-4 CE

Thanks!
I imagine your car is quite a bit quicker with the mods you have made.

silver & red CE

If it isn't, it will be after I install my long tube headers and HOT cam :blueangel:

Eric

LT4BUD

Not 100% sure of this, but also the LT4 has an Oxygen sensor on the exhaust which I believe is not used on the LT1. It threads into a "boss" on the exhaust pipe which is not provided on LT1 systems.

_freakmonkeydogboy_

:withstupid:

Dan Parker '96

All the '96's have the post cat O2 sensors. It's an OBDII requirement. The stock exhaust size is pretty beefy at 2.75".

lead_foot

Was it only the LT4s that had the 2 3/4 exhaust or all 1996s? :)

silver & red CE

All LT1/4 had the 2.75" OD, 2.5" ID exhaust system that necks down to almost 2.0" ID at a couple of points.

Eric