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Broadkill1 02-02-2018 06:45 PM
Muffler Suggestions
 
I have read threads on this subject from years ago however I have just had new stainless headers and side pipes completed for my big block and would like to have muffler suggestions that produce a great sound without setting off the neighbors alarm system and ones that do not greatly reduce horse power. Any Suggestions?

spdbrake 02-02-2018 08:49 PM
I recently switched to Flowmaster slimline and dropped approx 5-7db over the stock Backdraft mufflers. The flowmaster flow better from the look of the internals.
The Stainless case polishes out nicely (with determination,,,,)
https://www.flowmastermufflers.com/s...20Mufflers&kw=

Gaz64 02-03-2018 03:24 AM
Damm, I was hoping to be the first to say Flowmaster.

Thick wall casing, sound wave absorption technology, first manufacturer and still the best.

t walgamuth 02-03-2018 08:19 AM
Those sound very good! Can the stainless be welded to regular steel?

spdbrake 02-03-2018 08:44 AM
Yes, either TIG or MIG will work. Filler rod 309 is prefered but some folks use 308 with good results.

t walgamuth 02-03-2018 08:55 AM
Thanks SPD!

cycleguy55 02-03-2018 12:09 PM
There's a long thread on the Factory Five forums that's worth a look: Are these THE side pipe mufflers to get? Flowmaster 13530320 Slimeline - FFCars.com : Factory Five Racing Discussion Forum

If you're looking for dyno results, you can find them in post #61 of this thread: Muffler Testing - FFCars.com : Factory Five Racing Discussion Forum


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