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Jayro

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73 mustang baby blue with clevo 351
Hey all, ok so have the new Cleveland 351 installed and running well now. Full new exhaust system. Unfortunately the Hooker 4-1 headers sit WAY too low. Just seeing what others may suggest. I’m being told Tri Y headers may be the better option?

Ignore the leak on the ground, all fixed 😉

Cheers
Jase
 

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'73 mustang convt.
Are those the comps or super comps? The super comps are much lower than the comps. I swapped comps for super comps, here is a write up:

 
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texas
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'72 "mach" and a bunch of other stuff.
I went with FPA.

Tuck up higher than the hookers I had tested.

they are real close to the steering arm. I am goi to have to clearance them. :)
 

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Mister 4x4

Too Big to Sneak
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1971 Mustang Mach 1
Are those the comps or super comps? The super comps are much lower than the comps. I swapped comps for super comps, here is a write up:

I was just going to ask the same thing. I know my Hooker Comps are tucked up in there quite nicely with no clearance issues (although, might be a little too close up on the AOD, though).
exhaust2.jpg

exhaust3.jpg
 
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jakosaur

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New Mexico
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1973 Convertible, 351C H-code. AOD swap in progress
2000 Harley Softail Standard
Hey rcadd1ct,

How much do the FPAs cost? They look great!

Thanks,
Jake
 

Hemikiller

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71 Mach 1
71 XR-7 coupe
71 Country Squire
65 coupe
I have hooker 6915 Comps as well. The only time I had issues with them hitting was when I had a worn suspension. They hang about 1 1/2" below the torque box. At my current ride height, they're a 1/2" over a standard US 2X4 (1.75" x 3.5"). The lower body line on my car is 16" from the pavement.

1666441356330.png
 
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My all time favorite vehicle is our 1969 Shelby GT500
I was just going to ask the same thing. I know my Hooker Comps are tucked up in there quite nicely with no clearance issues (although, might be a little too close up on the AOD, though).
View attachment 68586

View attachment 68587
Very nicely done. I like the X-Pipe configuration. For our X-Pipe we did a much more radical turning of the pipes to force a dampening of the shock waves by the exhaust pipe tubular side walls. On the one hand it introduces a bit more resistance to what could have been a smoother flow of gas. On the other hand, it does a nice enough job pf helping improve its prior exhaust system (headers and individual exhaust pipes that go over the rear axle) to have reduced the running temperature of the engine by 2-3 degrees. I am using a 195 degree thermostat with dual electric fans. I had been running just over 200 degrees on an 80 degree day when just cruising at 60 MPH under minimal load. Now the engine temp under the same conditions runs just a little under 200 degrees. No other changes had been made at that time. As expected, I feel no real difference in performance, but the exhaust sound no longer has its prior raspy tinge. I am pleased with the results, even with the fairly extreme turns in the x-pipe design.

Here is a progress video I did of the X-Pipe fabrication and installation:



An aside for "the observant..." The auto transmission oil pan does not look like anything stock in that Mustang. The original C4 was replaced with an AOD unit. The rear axle ratio is a 35:1 TractionLok unit, and at 60 MPH under very light load the engine would spin at just under 2,900 RPM with the C4 in 3rd gear. With the AOD the engine RPM at 60 MPH under very light load, while in 4th/Overdrive gear the engine spins at a very tolerable 1,850 RPM or so. Between the impact of both the AOD and the X-Pipe we now have a very nice cruising vehicle, whereas perviously after 20 minute of driving I was tiring of the exhaust sound.
 

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Joined
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Wisconsin
My Car
1972 Mustang convertible, 351C 2V with FMX (#'s matching)
Currently equipped with 351C 4V 4BM, .060 over, roller cam, Sanderson block huggers, -AC
Those bends look interesting but not my style. I’m totally happy with my Sanderson coated huggers and I am sure I’m not noticing a HP loss vs LT’s on a 400/420 build for the droptop. I do know one thing though, there isn’t a scratch from my collectors on back… 😎
 

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