MAC vs Flowmaster
 

How are the new Mac mufflers compared to the flowmaster 40 series, are they just as loud? Does anyone have a good sounding muffler thats a little louder than the 40 series?

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86 Mustang GT w/pretty stock 93 5.0 (e-cam,pulleys,injectors, throttlebody,h-pipe,headers) Swapping out the 302 for a 514 stroker(was a 429)-cobrajet heads, solid roller cam, victor intake, TKO II trans, 3.73's w/axles&c-clip eliminaters.

If your going to put a 514 in your mustang I would wait to get exhaust. I mean I don't think that 2.5" exhaust is going to cut it. =)

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1989 GT, not stock.

2000 Camaro SS-A4, 13.4's bone stock.

1989 Chevy S-10, EX. Cab-383(500+hp on motor), tubbed, trick flow heads, trick flow pistons, etc... autometer phantom gauges, "built" 700R4, roll cage, lexan back window, corbeau seats, R.H.S. 5 harnesses, Fuel cell, convo pro wheels, 15x14's with 29x18.5 M/T'S on back, 15x4's on front, nitrous, and so much more!

I think Flowmasters with a 514ci sounds pretty good to me!!

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89 GT 5-speed: Dynomax Cat-Back, Dynomax H-pipe w/cats
Waiting for install: ASP Pulleys, Pro 5.0, Densecharger

I don't want to replace the ones I have on now with the small block and 2 1/2" exhaust, I'm just trying to get an idea of which ones I'm putting on after I swap motors. I like the 40 series, but the only ones they show in 3" are the deltaflows, aren't they a little quiter than the regular 40 series?

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86 Mustang GT w/pretty stock 93 5.0 (e-cam,pulleys,injectors, throttlebody,h-pipe,headers) Swapping out the 302 for a 514 stroker(was a 429)-cobrajet heads, solid roller cam, victor intake, TKO II trans, 3.73's w/axles&c-clip eliminaters.