C7 Tech/Performance Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Muffler fastener thread type

Thread Tools
 
Search this Thread
 
Old Feb 17, 2018 | 08:40 PM
  #1  
16Stingray's Avatar
16Stingray
Thread Starter
Advanced
 
Joined: Apr 2017
Posts: 60
Likes: 0
Default Muffler fastener thread type

Does anyone know what the thread type is for the two screws that bolt the two mufflers together?
I have tried M8x1.25 and M8x1.0 as well as 5/16-18 and 5/16-24.
The M8x1.25 seemed the closest but after a few turns it got hard to turn.

Anyone know for sure?
Reply
Old Feb 17, 2018 | 11:25 PM
  #2  
Max Bet's Avatar
Max Bet
Instructor
 
Joined: Sep 2016
Posts: 193
Likes: 19
From: Henderson NV
Default

Well I have a base exhaust sitting in the garage and the bolts are M8X1.25. I ran one through a die just to be sure. Is it the same as the NPP? Don't know.
Reply
Old Feb 18, 2018 | 11:39 AM
  #3  
16Stingray's Avatar
16Stingray
Thread Starter
Advanced
 
Joined: Apr 2017
Posts: 60
Likes: 0
Default

Originally Posted by Max Bet
Well I have a base exhaust sitting in the garage and the bolts are M8X1.25. I ran one through a die just to be sure. Is it the same as the NPP? Don't know.
ok thanks, i was leaning toward thats what it should be, i will try with a little more effort in putting the screw in and hope for the best.

Thanks
Reply

Get notified of new replies

To Muffler fastener thread type





All times are GMT -4. The time now is 08:34 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE