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#1
11-13-2007, 06:25 PM
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Value of an "X" Pipe?
Any thoughts on the value of installing an "X" pipe into my 68 GTO exhaust? The car is a 400 HO with Ram-Air, ported heads and Ponti-Action headers, leading into the dual exhaust.
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68 GTO HO 4-Speed 67 Catalina Convertible 99 Vette Convertible 6-Speed |
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#2
11-13-2007, 09:36 PM
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Not real sure about hp gains. It will equalize the pressure. Eliminates the cackle sound when letting off the gas.
My .02 patrick |
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#3
11-14-2007, 10:34 AM
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Hi,
I bought a 2.5" X-Pipe complete system from Pypes for my 462 cid, 68 GTO with log exhaust manifolds. I'm very happy with it so far. Car is a M20 four speed. No clearance problems, not overly loud. I had it installed by a muffler shop on an overhead lift. Quick and easy. All pipe connections were clamped. With RA exh manifolds and HO, you will probably gain a little HP from improved flow and less backpressure. Mike
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1968 Pontiac GTO 462CID, 4-Speed Manual, 3.55 rear. Aleutian Blue exterior, 219 Teal Blue interior. Chrome bumper, AM & 8-Track and Rally II Wheels |
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#4
11-14-2007, 11:45 AM
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Thanks Dog,
Does the Pypes x pipe have baffles in it? Also, you wouldn't happen to have a spare radio connector or harness???
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68 GTO HO 4-Speed 67 Catalina Convertible 99 Vette Convertible 6-Speed |
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#5
11-14-2007, 12:06 PM
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Hi,
I didn't see any baffles in the x-pipe tubes that I received. I ordered the standard mufflers for my system. Wasn't interested in the loud ones. I don't have any spare cables, harnesses or connectors for radios. Mike
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1968 Pontiac GTO 462CID, 4-Speed Manual, 3.55 rear. Aleutian Blue exterior, 219 Teal Blue interior. Chrome bumper, AM & 8-Track and Rally II Wheels |
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#6
11-16-2007, 05:59 PM
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X pipe
When we dynoed my rebuilt engine we did a pull with the Pypes 2.5" X pipe and it picked up 20 ft/lbs of torque with no other changes. So when it goes in the car, I'm using the X pipe!
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#7
11-17-2007, 09:21 PM
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they do add power to the ground but there are two negatives, one is they get in the way especially if you have a stick. two is the exhaust loses that stock low burble at idle.
No question though, good for 10-20 pound feet on the chassis dyno.
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My Break Away Squad 1969 Fbird (base OHC, 350, 400HO & Sprint Cvt’s - 400HO & TA ht’s) 1969 Custom S 2dr ht 1969 LeMans (2dr & 4dr ht & Cvt) 1969 LeMans Safari wagon 1969 GTO (2 Cvt, 2 ht & Judge ht) 1969 Cat (3 Cvt’s & a 2dr ht) 1969 Ventura wagon 2 seat 1969 Exec 4dr post 1969 2 Bonnie Cvt's & 2 wagons 1969 Bonnie Brougham (4dr ht & Cvt) 1969 Grand Prix 2 SJ’s 1969 2+2 2dr ht (Canadian) |
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#8
11-18-2007, 12:34 AM
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I added an "H" pipe and like the balanced sound.
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Men feel younger by driving old muscle cars. Women feel younger by doing a little "nip and tuck". Both are expensive and darn well worth it! |
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#9
11-18-2007, 01:14 AM
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i bought an h pipe and it seemed to tame mine.... maybee i shoulda tried an x pipe or left it without either
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#10
11-18-2007, 07:15 AM
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I dropped a tenth of my 1/4 times with mine.Got it from Dr. Gas
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68 GTO Pure Stock Drags 13.38 106 MPH 2006 |
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#11
11-18-2007, 10:52 AM
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Thanks to everybody who responded. I was considering the Dr. Gas pipes.
Put an "x" in my vette to replace the factory "H" and saw a difference. Noel, Any clearance problems with the Dr. Gas "X" in your car? Is it a stick?
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68 GTO HO 4-Speed 67 Catalina Convertible 99 Vette Convertible 6-Speed |
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#12
11-18-2007, 03:13 PM
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Red, I put a Pypes 3" with X and dumps on my "68 GTO....picked up over 2 tenths. It is very loud though. Bill
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#13
11-18-2007, 05:44 PM
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My car went from 294,1 rwhp to 322,1 and added 39 ft/lbs when I installed a 2,5" Pypes system. The car is an all stock -70 RA4 otherwise. Here is a link to Pypes page with some photos: http://www.pypesexhaust.com/gallery25.html
Håkan
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`70 GTO, 370 hp, 3:90, TH400. |
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#14
11-19-2007, 07:11 PM
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Quote:
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68 GTO Pure Stock Drags 13.38 106 MPH 2006 |
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#15
11-20-2007, 01:30 AM
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Done deal! Dr. Gas it is.
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68 GTO HO 4-Speed 67 Catalina Convertible 99 Vette Convertible 6-Speed |
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