Learned something new about ZR-1 stock mufflers today - ZR-1 Net Registry Forums

Ccmano · 08-24-2009

Doing some research for a friend today and discovered an interesting piece of Corvette trivia. There is actually a difference between stock 92-95 ZR-1 mufflers and LT-1 mufflers of the same vintage.
Apparently, 90-91 Z's used what GM called a "reverse flow" muffler as did the L98's of the time.
92-96 LT-1's and LT-4's used what GM called a "tri-low" muffler. 92-95 ZR-1's used a "straight through" muffler for increased flow.
At least that's what detailed reading of my "Vette Spec's" book says.

Trivia lesson over.
H

08-24-2009	#1
Ccmano Join Date: Jun 2006 Location: Sparks, NV Posts: 2,852	Learned something new about ZR-1 stock mufflers today Doing some research for a friend today and discovered an interesting piece of Corvette trivia. There is actually a difference between stock 92-95 ZR-1 mufflers and LT-1 mufflers of the same vintage. Apparently, 90-91 Z's used what GM called a "reverse flow" muffler as did the L98's of the time. 92-96 LT-1's and LT-4's used what GM called a "tri-low" muffler. 92-95 ZR-1's used a "straight through" muffler for increased flow. At least that's what detailed reading of my "Vette Spec's" book says. Trivia lesson over. H __________________ 90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold.