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C4 ZR-1 Discussion General ZR-1 Corvette Discussion, LT5 Corvette Technical Info, Performance Upgrades, Suspension Setup for Street or Track
#1
CF Senior Member
Member Since: Jan 2005
Location: San Antonio Tx
exhaust size
What is the diameter of the '90 ZR1 exhaust pipes? What is the difference between these and the lt1/lt4 pipes besides the tips? Thanks!
#2
CF Senior Member
Member Since: Jul 2002
Location: This city NEVER sleeps! Frank's back yard!
#3
CF Senior Member
Member Since: Apr 2005
Location: The Old Dominion
I took a pair of calipers to the exhaust in a few spots out of curiosity. It seemed like 2.75" up by the cats, was down to like 1 7/8" going into the resonator, and was like 3" where it turns out to the mufflers. The size seems pretty variable on it.
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exhaust size
