[Z Code 400]

I have a new Flowmaster Crossflow System on my 1975 Formula. It fits perfectly and has no resonance. The probelms started only when I tried to install my disc brake 10 bolt; the pipes going up and into the muffler case interfere with the disc brake lines.

Rather than buy an entire new system, I was wondering if there are any sources for just the intermediate and tailpipes for a second generation Firebird with a crossflow??? Seems I can buy the muffler outright, no problem, but Pypes only offers the entire $600.00 kit. I would like to hear from any forum members who do exhaust work as my local shop says they cannot duplicate the bends needed for the crossflow tailpipes.

Since the system is brand new, I considered maybe having a shop modify the inlet pipes and move them outboard, away from the brake lines, or even using a section of flat-style tubing.

Any advice would be appreciated....Thanks...Robert

P.S. One of my buddy's in high school had dual glasspacks mounted transversely behind the axle with dual tailpipes, much like the old chambered system...this might even be easier than a crossflow????

[Tom Hand]

Robert, what you said is what HO sold many years ago, dual parallel glass-pack type mufflers. Fits well, works well too if you like that sound style and level.
Tom

[Z Code 400]

Tom,

I'm flexible as far as sound goes. Growing up, we ran the chambered mufflers on everything. Interestingly, my 42585 Flowmaster is very, very quiet. I'm just trying to find the best fitting replacement muffler, if possible, without buying a complete new system. It's not so much the $$$$$ involved as having to pull a brand new setup.

Thanks for the reply and information....Robert