69' side exhaust performance
10-08-2011, 08:14 PM
#21
Racer
I have a set of 69 installed on my 70. The original owner had them and a luggage rack dealer installed. I plan on going stock when the wallet allows.
pluses;
They do do give the car an aggressive and menacing look. Also the sound is a lot sweeter than under car exhaust.
Minuses; As stated, the sound is sweet, but with the t-tops in and on anything but a just down the raod some, well, it can get annoying. Also the heat transference can be terrible in warm weather.
You also better get used to smelling like exhaust when you leave the car.
My 2 cents, if you are young then the aggravation is probably worth the cool factor.
But if you have some age on you(53) that does not take long to reverse that equation.
pluses;
They do do give the car an aggressive and menacing look. Also the sound is a lot sweeter than under car exhaust.
Minuses; As stated, the sound is sweet, but with the t-tops in and on anything but a just down the raod some, well, it can get annoying. Also the heat transference can be terrible in warm weather.
You also better get used to smelling like exhaust when you leave the car.
My 2 cents, if you are young then the aggravation is probably worth the cool factor.
But if you have some age on you(53) that does not take long to reverse that equation.
10-08-2011, 08:17 PM
#22
Drifting
I have a set of 69 installed on my 70. The original owner had them and a luggage rack dealer installed. I plan on going stock when the wallet allows.
pluses;
They do do give the car an aggressive and menacing look. Also the sound is a lot sweeter than under car exhaust.
Minuses; As stated, the sound is sweet, but with the t-tops in and on anything but a just down the raod some, well, it can get annoying. Also the heat transference can be terrible in warm weather.
You also better get used to smelling like exhaust when you leave the car.
My 2 cents, if you are young then the aggravation is probably worth the cool factor.
But if you have some age on you(53) that does not take long to reverse that equation.
pluses;
They do do give the car an aggressive and menacing look. Also the sound is a lot sweeter than under car exhaust.
Minuses; As stated, the sound is sweet, but with the t-tops in and on anything but a just down the raod some, well, it can get annoying. Also the heat transference can be terrible in warm weather.
You also better get used to smelling like exhaust when you leave the car.
My 2 cents, if you are young then the aggravation is probably worth the cool factor.
But if you have some age on you(53) that does not take long to reverse that equation.
10-09-2011, 01:47 PM
#23
Melting Slicks
Member Since: Feb 2001
Location: Europe , Luxembourg
Posts: 3,304
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Hi
Do you have pics of the received sweet thunder 2.5" baffle system pipes ?
Realy interested if this is a straight pipe muffler system or again a reverse flow system like the original 69 muffler system.
Rgds. Günther
Do you have pics of the received sweet thunder 2.5" baffle system pipes ?
Realy interested if this is a straight pipe muffler system or again a reverse flow system like the original 69 muffler system.
Rgds. Günther
10-09-2011, 02:24 PM
#24
Instructor
I have the 69 covers with the pipes from a 67 BB. The 67 was a less restrictive chambered exhaust, but they can be pretty loud, as in can't hear the radio. But they sound really sweet.
10-09-2011, 04:27 PM
#25
Allen's will sell you the '67 chambered mufflers with '69 exhaust pipes and outlets shipped loose, for fitment and tack welding on the car. They will also make you a deal on a set of new repro '69 covers for $2k. Probably a quieter way to go if factory correct appearance is not important. Once again, the problem with side exhaust is the restriction due to the 90 degree non-mandrel bends in the exhaust pipes.
10-09-2011, 07:33 PM
#26
Instructor
Thread Starter
Works for me though. Looks great, sounds great, and honestly don't think there was any performance loss.
03-11-2012, 10:05 AM
#27
I know that this thread is discussing performance, but I did do a little modification to my Allen's side exhaust to help w/ exhaust smell. I put the in line catalytic converters that are 4" in diameter and it really cut down on the exhaust fumes. Very little change in sound, but you can stand right at the outlet now and you do not reek like gas/exhaust. Friends and family like taking a ride even more now.
I ran this setup on my 71 LT-1 and it was LOUD. 
03-11-2012, 01:31 PM
#29
Race Director
I know that this thread is discussing performance, but I did do a little modification to my Allen's side exhaust to help w/ exhaust smell. I put the in line catalytic converters that are 4" in diameter and it really cut down on the exhaust fumes. Very little change in sound, but you can stand right at the outlet now and you do not reek like gas/exhaust. Friends and family like taking a ride even more now.
I have the stock style pipes and agree that they are a little loud for my residential neighborhood. Once I get on the highway it's fine though. Not sure where that puts me on Makonut's age scale
