Topic: true dual exhaust for auto
in Forum: C3 Fuel, Emission Control, and Exhaust Systems
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I checked the archives and couldn't find any postings. has anybody put true duals on a car with an automatic tranny? they are available thru the catalog houses. do they fit thru the hole in the tranny cross member on the driver side? it looks like the linkage would be in the way? any help is appreciated.
Hank
Hank
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Hot Springs, AR - USA
Joined: 4/24/2004
Posts: 3236
Vette(s): 69 Conv #'s match 427, TKO-600/.64, 3.36HD-Posi, HT, T/T, PS, PB, PW, SP, Leather, Comp XE264HR & Roller Rockers & Lifters, Air-Gap RPM intake, Holley St Av 770 VS, MSD 6AL+Dist+Blaster SS, K&N, Jet-Hot Hooker Side-Pipes, Steeroids, Al Rad, Spal Fans
I did on my last vette..
didnt take any real creative bending..
didnt take any real creative bending..
i put 2.5in chambered pipes from corvette central on my 72 auto with no problem and no bending.

Hot Springs, AR - USA
Joined: 4/24/2004
Posts: 3236
Vette(s): 69 Conv #'s match 427, TKO-600/.64, 3.36HD-Posi, HT, T/T, PS, PB, PW, SP, Leather, Comp XE264HR & Roller Rockers & Lifters, Air-Gap RPM intake, Holley St Av 770 VS, MSD 6AL+Dist+Blaster SS, K&N, Jet-Hot Hooker Side-Pipes, Steeroids, Al Rad, Spal Fans
i didnt do any real bending.. i think i had to slightly curve one of the pipes..
just put it in a bench vise and gave it a little tug
just put it in a bench vise and gave it a little tug
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Frederick, MD - USA
Joined: 9/8/2003
Posts: 3398
Vette(s): 1969 convertible L71 427/435 4-speed black interior
I have true duals on my '78 L82 automatic. I bought the whole system from Corvette Central. It went on with no problems at all.
I'm going to put true dual on my 75 with an automatic. The 74 exhaust for an automatic fits it perfectly. Your may be a bit different. I think it will fit all the way to 82 with slight modification. I could be wrong.
|UPDATED|5/14/2004 2:27:45 PM (AZT)|/UPDATED|
|UPDATED|5/14/2004 2:27:45 PM (AZT)|/UPDATED|
I put an Allen's system on my 79 - L-82. It is an early 79, so the crossmember has the hole on the drivers side to accept the pipe.
If you have trouble lining up the rear mufflers, there is a 7/16" threaded hole in the frame almost directly above where the exhaust pipe enters the muffler on the front side. You can hang a generic hanger there to support that area, and keep the exhaust system up.
Putting true duals on is not NCRS specs, so putting these additional hangers won't matter.
I can send pictures of this hanger addition if anyone wants to see. vinterrv@aol.com.

If you have trouble lining up the rear mufflers, there is a 7/16" threaded hole in the frame almost directly above where the exhaust pipe enters the muffler on the front side. You can hang a generic hanger there to support that area, and keep the exhaust system up.
Putting true duals on is not NCRS specs, so putting these additional hangers won't matter.
I can send pictures of this hanger addition if anyone wants to see. vinterrv@aol.com.


in Forum: C3 Fuel, Emission Control, and Exhaust Systems
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