[Crusher137]

1970 SS Big Block

Looking to buy a 2.5 inch header back system with an x-pipe, and no mufflers. Having a hard time finding it. Seems they are all cross-member back. Any suggestions?

 

[RatchetRay]

Only one that I know of, 409SS and also available in 3".

https://www.summitracing.com/parts/pye-sga40/make/chevrolet/model/chevelle/year/1969

 

[CMCE]

The terms 'Header-back' and 'Crossmember-back' mean the same thing. Aftermarket companies assume the end user will probably use headers, so that's where the tubing starts. The "big three" (Pypes, MagnaFlow, & Flowmaster) offer downpipes to bridge the gap if you're running manifolds. So to answer your question, the only one to offer an X-pipe system without mufflers is Pypes. SGA10 is a 409 stainless system and comes with GM style hangers and stainless U-clamps. Flowmaster is the only other company to offer a kit w/o mufflers, but it is an H-pipe system made from aluminized steel. Hope this helps.

Pypes SGA10

Flowmaster 17107

 

[Crusher137]

Thank you CMCE. Very informative. You know your pipes......lol

 

[shovelrick]

I have a Pypes 3" X pipe W/Violator mufflers full system to rear bumper behind a 590hp 600tq BB and very happy but thinking of changing tail pipes to 2.5", can't go wrong with Pypes IMHO

 

[CMCE]

I have a Pypes 3" X pipe W/Violator mufflers full system to rear bumper behind a 590hp 600tq BB and very happy but thinking of changing tail pipes to 2.5", can't go wrong with Pypes IMHO

Shovelrick, at around 600hp you will not notice any loss of performance with 2.5" tails. BTW, Flowmaster is the only one who will sell just tailpipes.
Flowmaster 15802 almuminized tailpipes
Flowmaster 815802 stainless tailpipes

 

[shovelrick]

Shovelrick, at around 600hp you will not notice any loss of performance with 2.5" tails. BTW, Flowmaster is the only one who will sell just tailpipes.
Flowmaster 15802 almuminized tailpipes
Flowmaster 815802 stainless tailpipes

Thank You, just a little tight to gas tank & inside of 295/55r15" DR's when they're on

 

[427L88]

Shovelrick, at around 600hp you will not notice any loss of performance with 2.5" tails. BTW, Flowmaster is the only one who will sell just tailpipes.
Flowmaster 15802 almuminized tailpipes
Flowmaster 815802 stainless tailpipes

Yeah, I cant imagine 3" tails, the 2.5" are tight enough! I fact my slicks rub on them at the top end!

 

[The Camaro Guy]

Thank you CMCE. Very informative. You know your pipes......lol

Give Heartthrob a call in Minnesota they do custom work and make a lot of the no name systems, like Summit

 

[ChevelleFan70]

3" tailpipes are a PITA. Mine still need some clearancing where they rattle on the frame. With that said, I'm super happy with the sound and performance from my Pypes X pipe system with the RacePro mufflers. I dont like my car too loud, and the RacePros fit the bill perfect.

 

[The Camaro Guy]

Had a local exhaust shop bend my pipes around the mufflers I had for $125, welded everything up and an X pipe. Like he said 2.5" aluminized pipe cost him $8 bucks for 4', like anything else, cost is everything in this hobby.

 

[Alwhite00]

I'm happy with the Magnaflow system on my 67 but I came with mufflers though. Fit great.