When I first purchased my camaro the muffler was messed up so I went to minekey. from the cat converter to the back it is new. I was wondering if I can just replace the muffler (which is cheaper) or am I better off getting a cat back exhaust. My main concern is performance (350 engine)

 

What size pipes and muffler inlet/outlet did they put on?? How much modding do u want to do your car??

Just putting a muffler on is going to be cheaper, but if u want performance with a 350, u will want to go with a 3in. exhaust if u don't have it already. If u do, just get a new muffler.

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Looking For:

87 IROC-Z 350 TPI
84 TRANS AM 305 H.O.

 

I would just get a new 3" mandrel bent cat-back system while you are at it, it will help your 350's performance nicely. I am very happy with my Hooker cat-back I bought from Jegs for $260.

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1987 Chevy Camaro IROC-Z
L98 TPI 350 (5.7L)
TH 700R-4 Transmission
Borg Warner 7.75" 9 Bolt Rear End

Current Mods: LT4 Hot Cam, Comp Cams 1.52:1 Roller Rocker Arms, Edelbrock TES 1 5/8" Headers, Hooker 3" Aerochamber Cat-Back System, Performance Resource Chip, Accel Ignition Coil, Cap, Rotor, 8.8mm Wires, K&N Filters, JET TPI Air Foil, All Free Mods, Falken ZIEX Z-Rated Tires.

Best ET (w/o LT4 cam): 14.32 @ 97.7mph
(corrected for elevation)

7.5" 10 Bolt with 3.42s soon to come!