American Thunder Exhaust System - Team Camaro Tech
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post #1 of 21 (permalink) Old Dec 10th, 01, 06:11 PM Thread Starter
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Nick
 
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Has any one ever used the Flomaster American Thunder Exhaust system? I just ordered one for My 68 Big Block car and I was wondering how they fit? Sound? Etc..
Thanks, Nick

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69 Z/28 X77 D80 83000 original miles,DZ 302, M-21, BU 373 Rear End, ZL-2 Ducted Hood, Daytona Yellow, Black Deluxe, Tilt, Factory AM/FM, Console Gauges.
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post #2 of 21 (permalink) Old Dec 10th, 01, 06:19 PM
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The fit is perfect. The delta flows are a little higher pitched than regular flowmasters, but sound great and no resonance. A little louder than expected.

I looked for you at Super Chevy back in March, didn't see you.

Lonnie

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67 Camaro 410sb 11.63 @117.6
67 Camaro 388 12.10 @110.6, best MPH 112.96
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post #3 of 21 (permalink) Old Dec 10th, 01, 06:58 PM Thread Starter
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Lonnie, I sent you an email with a pic of my race car. i didnt make it this year to phoenix, I had some last minute crap come up, but i should be there in 2002.
On the exhaust, do the tail pipes dump in the correct location or do they stick out the back like a 69?
Thanks, Nick

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69 Z/28 X77 D80 83000 original miles,DZ 302, M-21, BU 373 Rear End, ZL-2 Ducted Hood, Daytona Yellow, Black Deluxe, Tilt, Factory AM/FM, Console Gauges.
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post #4 of 21 (permalink) Old Dec 11th, 01, 01:50 AM
 
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When you see a price on a Flowmaster exhaust system, are the mufflers included? I assume so. Anyone have an idea how these systems compare price wise to having pipes custom bent at a muffler shop? I know they're better for performance, etc... just want to know how much more I will have to pay...
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post #5 of 21 (permalink) Old Dec 11th, 01, 02:11 AM
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I installed this system about 2 months ago on my '68 small block. The fit was perfect and all the hardware was included.

The 40 series Delta Flow mufflers aren't exactly quiet. At part throttle, its a low rumble, and full throttle gives a nice loud roar.

Dave
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post #6 of 21 (permalink) Old Dec 11th, 01, 03:44 AM
 
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They make two different systems -- the kind with the crossflow muffler and the dual-- I have the dual. It fit great, bolted right up,and every thing is included. It sounds great and has polished stainless tips that exit in the stock 69 location. Very good system for the money. (I think I got it from summit for 328.00)
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post #7 of 21 (permalink) Old Dec 11th, 01, 04:30 AM
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I also put the Flowmaster dual system on my former '69 Z/28. My car already had headers when I bought it, so I went back with new headers when I restored it. The exhaust system is designed for headers and comes with everything needed, including crossover, mufflers, chrome tipped tailpipes(69 style exit) and all hardware. I was able to install this in my garage on jack stands. After installing everything, I drove it to a muffler shop (with open headers and many stares) and had everything welded. The sound, fit and appearance was worth the approximate $320. I plan to install the same system on my '69 Z11.

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post #8 of 21 (permalink) Old Dec 11th, 01, 04:36 AM Thread Starter
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Thanks for all the quik replys, I am really looking forward to getting this on the the car. I just spent 3 hours last night replacing the old Casler headers with a new set of Hooker Super comps with 2 inch primarys, Wow What a pain in rear that was but their finally on. I did oder the exhaust system from Summit and it shoud be here by the weekend. ill let you know how it sounds.
Thanks,
Nick

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69 Z/28 X77 D80 83000 original miles,DZ 302, M-21, BU 373 Rear End, ZL-2 Ducted Hood, Daytona Yellow, Black Deluxe, Tilt, Factory AM/FM, Console Gauges.
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post #9 of 21 (permalink) Old Dec 11th, 01, 05:23 AM
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I believe you have made a good choice. I have the American Thunder system on my '68 and it fit like a glove. And most importantly, it was inexpensive $260 for the 1968. Exits in stock location between fender and leaf spring for me, but for the '69 the system is probably different. Yes, mufflers are included for any who wondered.

Oh yes, and I love the sound. Low rumble when cruising, but it roars when you put your foot into it.
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post #10 of 21 (permalink) Old Dec 11th, 01, 08:35 AM
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As stated previously there are two american thunder systems for the camaro. You would think the cross flow type would be close to the original but it is not. Two problems, the exhaust tips are not stainless and you cannot use the existing hanger locations. I used the true dual system and it mounted perfectly and the stainless tips finish it off.
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post #11 of 21 (permalink) Old Dec 11th, 01, 10:49 AM
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The American Thunder system has 2 Delta Flow 2 chamber mufflers and exits in the stock 67 location. Can't beat it for the money. $260. All the hangers they give you bolt to existing holes, and like I said, it fits perfect.

On my car there is no low rumble, it is loud all the time.

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67 Camaro 410sb 11.63 @117.6
67 Camaro 388 12.10 @110.6, best MPH 112.96
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post #12 of 21 (permalink) Old Dec 11th, 01, 12:14 PM Thread Starter
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Lonnie,
Did you get my email? If so do yoy reconize my car from the phoenix Super Chevy Show in 99 and 2000? The car I am putting the exhaust on is the twin to my race car, hence the name of my race car "The Evil Twin" My 68 Is A real SSRS 396 that I have owned for 22 years, my race car is just 6cyl coupe that I cloned to look like my other 68.
Nick

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69 Z/28 X77 D80 83000 original miles,DZ 302, M-21, BU 373 Rear End, ZL-2 Ducted Hood, Daytona Yellow, Black Deluxe, Tilt, Factory AM/FM, Console Gauges.
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post #13 of 21 (permalink) Old Dec 11th, 01, 04:46 PM
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Im trying to decide between the American thunder and the crossflow.I dont like the look of the mufflers hanging so i was leaning towards the crossflow setup,how is this system?
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post #14 of 21 (permalink) Old Dec 11th, 01, 04:59 PM
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Nick,I just got your email now, I was at work earlier. Can't say that I recognize it. I raced in '99 but not '00, plus there is a lot of 1st gens. Of course there aren't any that look like mine, with the rare blue with white stripes and red with black stipes paint jobs. hahaha

I hope to take the blue one in 2002.

Lonnie

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67 Camaro 410sb 11.63 @117.6
67 Camaro 388 12.10 @110.6, best MPH 112.96
website
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post #15 of 21 (permalink) Old Dec 12th, 01, 06:49 AM
 
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ochrisl-


I have this system on my 67 Pro-touring car. In my opinion it sounds as good or better than the dual system, plus the ground clearance is excellent. All the system consists of is 2 40 series flows welded end to end with dual in/dual outs. So it is basically the same thing, but with better balancing in the single muffler. The flowmaster rep I talked to said that the single crossflow style system produced more power and sounded better in his opinion. I took his word for it, and he was right. Hope this helps.


Dan

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67-327, 700r4 trans, 9:1 Comp XE268 Cam, Perf. RPM Intake. 750 Holley, Sportsman II Heads, Ceramic coated headers
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