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Author Topic:   351C Header Selection?
MrXerox
Gearhead

Posts: 348
From: Oklahoma City, Oklahoma
Registered: Nov 2000

posted 03-10-2003 10:07 AM     Click Here to See the Profile for MrXerox   Click Here to Email MrXerox     Edit/Delete Message   Reply w/Quote
Just installed a C4 in the 71 Mach this weekend and in the process noticed how badly my headers were leaking. I am currently running a set of coated DynoMax and upon further inspection I noticed that the ports on the header are much smaller than the 4V head ports even though they are supposed to be 4V headers. I am considering breaking down and shelling out the $550 for the Hooker Super Comp headers that will work for my combo but was curious about the differences between the Comp series and the Super Comps? Are they really that much better? Or, I am open to any other suggestions for headers for a 71 with 351C 4V with 244 @ .050 .623/.623 solid roller and 3.89 rear, C4 and PS. Thanks gang...

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Tea'sGrabber
Gearhead

Posts: 276
From: Seattle, Wash.
Registered: Feb 2003

posted 03-10-2003 11:10 AM     Click Here to See the Profile for Tea'sGrabber   Click Here to Email Tea'sGrabber     Edit/Delete Message   Reply w/Quote
Usually the difference between the Comp's and the Super Comp's is the Flange thickness and primary tube thickness. Super Comp's usually have longer and equal length primary tubes and also a longer collector. You could try Ford Powertrain Applications up here in Puyallup, Washington... Stan is building some very good headers for alot of Ford only cars.... Might save you a few bucks!!!! # 253-948-9503 is his shop..

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Todd 71 Mav Grabber All orig 306 cu.in. Cast Iron heads. Carillo Rods.Best et. 10.71 @ 124 thru the mufflers.

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kid vishus
Gearhead

Posts: 6098
From: middle of NC
Registered: Oct 2000

posted 03-10-2003 11:20 AM     Click Here to See the Profile for kid vishus   Click Here to Email kid vishus     Edit/Delete Message   Reply w/Quote
Another difference, at least on my cleveland hedders, is the super comps have bigger primary and collectors than the regular comp's do. And my motor really likes the bigger tubes. But I'm not sure how well a less radical motor would like them.

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MrXerox
Gearhead

Posts: 348
From: Oklahoma City, Oklahoma
Registered: Nov 2000

posted 03-10-2003 12:23 PM     Click Here to See the Profile for MrXerox   Click Here to Email MrXerox     Edit/Delete Message   Reply w/Quote
Well, I just checked the price on the two and the coated SuperComps are $733.00 and the coated Comps are $360.00 Do you guys think the price difference is justified in performance and or quality?

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Hemikiller
Gearhead

Posts: 606
From: Killingworth, CT
Registered: Feb 2002

posted 03-10-2003 08:27 PM     Click Here to See the Profile for Hemikiller   Click Here to Email Hemikiller     Edit/Delete Message   Reply w/Quote
I can't speak for the Super Comps, but I had a set of the regular Comps. They fit beautifully, sealed every time, and never gave me any problems. For the $140 I paid for them, they were great. This was on a relatively mild 351 4v, so you may want to step up to the Super Comps. I've seen a couple near new sets go on eBay pretty cheap, @ 250 or so. If you can wait, keep an eye there. The coating can be done to any header, used or new so keep that in mind as well. Both headers are of very high quality, the super comps cost more because of the extra tube size, extra labor in manufacturing, and extra R&D.

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n2oMike
Gearhead

Posts: 2419
From: Spencer, WV
Registered: Jan 2001

posted 03-10-2003 08:31 PM     Click Here to See the Profile for n2oMike   Click Here to Email n2oMike     Edit/Delete Message   Reply w/Quote
Super Comps are also made of thinner tubing for weight savings, and a slightly larger inside diameter.

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Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
http://www.mustangworks.com/cgi-bin/moi-display.cgi?220

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SteveLaRiviere
Administrator

Posts: 43151
From: Saco, Maine
Registered: May 99

posted 03-11-2003 07:37 AM     Click Here to See the Profile for SteveLaRiviere   Click Here to Email SteveLaRiviere     Edit/Delete Message   Reply w/Quote
The Super Comps are also 'tuned' or 'equal length' headers. That's their main performance advantage.

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'70 Mustang Mach 1 - '72 Mustang Sprint - '94 F-150

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MrXerox
Gearhead

Posts: 348
From: Oklahoma City, Oklahoma
Registered: Nov 2000

posted 03-11-2003 10:52 AM     Click Here to See the Profile for MrXerox   Click Here to Email MrXerox     Edit/Delete Message   Reply w/Quote
I guess my main concern is if the port sizes match up or not? On the dynomax set I have now, I can place my gasket up to the header and the ports on it are quite a bit smaller than the gasket itself. This cannot be a good thing as the air escaping the head would in effect hit a wall around the outer edge of the ports. Are the ports on both the Comp and Super Comp a nice match for the 4V ports? I am beginning to sway towards the Comps as I dont feel the power I would gain from the equal length tubes would warrant the price difference on a primarily street driven motor like mine?

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Tea'sGrabber
Gearhead

Posts: 276
From: Seattle, Wash.
Registered: Feb 2003

posted 03-11-2003 12:23 PM     Click Here to See the Profile for Tea'sGrabber   Click Here to Email Tea'sGrabber     Edit/Delete Message   Reply w/Quote
Hooker has 2 sets of Comps listed...#6915hkr for 4V heads and #6921hkr for 2V heads...The shorter primary tubes will be better for the street... The Super Comps are a 2" primary with a 3.5" collector...That's a race header with 34"long primary tube... The Comp's have a 27" long primary tube.... Better for the street!

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Todd 71 Mav Grabber All orig 306 cu.in. Cast Iron heads. Carillo Rods.Best et. 10.71 @ 124 thru the mufflers.

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n2oMike
Gearhead

Posts: 2419
From: Spencer, WV
Registered: Jan 2001

posted 03-11-2003 12:28 PM     Click Here to See the Profile for n2oMike   Click Here to Email n2oMike     Edit/Delete Message   Reply w/Quote
I had regular comps on my car before getting the super comps. They looked almost like the supers, except they weren't quite as equal length, and were made of much thicker tubing. They fit great, and I ran them for 7-8 years before selling them to a buddy... who is STILL running them. An no, they weren't even coated!

The collectors of the regular comps didn't point exactly straight back, (they were angled slightly) where the supers did.

For a daily driver, I'd go with the regular comps. disclaimer Mine were for a 65-66 mustang with a 289-302, so your results may vary.

Good Luck!

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Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
http://www.mustangworks.com/cgi-bin/moi-display.cgi?220

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