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I'm a new member to this forum, having just purchased my first big nose Mustang a few months ago from a gentleman in Fredericksburg, Virginia. Its a 73 Mach-1 Sportsroof, 351C-4V, 4-speed in Blue Glow paint. According to the Marti Report that I purchased it was originally a Q-Code but the previous owner had replaced the motor with a 1970 351-C-4V M-Code many years ago. So there's no chance of ever having it be a numbers matching car. But that M-Code motor has the high (11.0 to 1) compression, closed combustion "quench" chamber 4V heads so it does run well and for that I am very pleased. The previous owner installed an Edelbrock Performer aluminum intake manifold along with a Holley 4160 (750 cfm) carburetor. It has the stock exhaust manifolds and turbo mufflers and it sounds quite good. there is absolutety no rust on the car anywhere but the drivers side floor pan was replaced at some point. The paint is still in good condition, having been repainted at some point in its life but it does have its share of minor nicks and scratches so I plan on having it repainted over the upcoming winter. So far I have installed a new clutch, pressure plate, and 164 tooth flywheel along with a new power steering pump, several brake lines that looked questionable, and all of the rear taillight sockets. I am now planning installing a better performing cam like the Comp XE284H which I've read good things about and Hooker Long Tube Super Comp headers. If anyone has any recommendations, experience, or suggestions on this cam and header combination, I would greatly appreciate the input as I'm not sure if the headers will fit properly. I also want to replace the stock 14" Magum wheels and 225/60R14 tires with 15" rims and larger (295 rear/245 front) tires by next spring. I'm glad to be a member and hopefully I'll be able to contribute to the forum.

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Nice slick ride!!  Welcome aboard from Houston, TX!  Mo Pics Please!!!

9-20-19-Mine-Again.jpg1972 Mach 1 351 Cleveland Ram Air, C6, 9 inch with 3.25 Posi, Sanderson Ceramic Headers, 2.5" dual H Pipe exhaust w/stainless tips, MSD Ignition, Edlelbrock 4BB Carb, Wilwood Front Discs, Summit Racing Rear Discs.

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Do you have power steering?  Many of the headers available are not compatible with power steering.  I have PS on my 72 Mach 1 and I used Sanderson Headers that are compatible with PS.  

9-20-19-Mine-Again.jpg1972 Mach 1 351 Cleveland Ram Air, C6, 9 inch with 3.25 Posi, Sanderson Ceramic Headers, 2.5" dual H Pipe exhaust w/stainless tips, MSD Ignition, Edlelbrock 4BB Carb, Wilwood Front Discs, Summit Racing Rear Discs.

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Yes, I do have power steering on my Mach-1. According to the Hooker website and Summit Racing's website these will fit but I was hoping someone out there could confirm that before I purchase them. Nice stang by the way. That's pretty sharp! I need to reupholster my interior also. Both front seats are torn and my drivers side armrest is badly damaged.

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Very nice. Welcome from Oregon.

 

 

“If you can't explain it simply, you don't understand it well enough.”

--Albert Einstein

 

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Welcome from Ohio.  Nice looking car.  Looks to be in great shape.  

Kilgon

 

 

"The only dumb question is the one not asked"

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Welcome from Iowa. 

73 Grande H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

 

- Jason

 

 

082-hot-rod-power-tour-2017-1970-1970s.jpg

 

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On 8/2/2020 at 11:29 AM, Kilgon said:

Welcome from Ohio.  Nice looking car.  Looks to be in great shape.  

I thank you all for the welcome.

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Does it matter that my 351C-4V motor is an early 1970 M-Code (11.0 compression). Would it still be too much cam? Richard Holdener who seems to be quite an expert on small blocks (Chevys, Mopars, Fords, and his favorite is the Ford 351C) has a bunch of YouTube videos where he installed this cam in a pretty much stock 351C-4V M-Code with the same compression and closed chamber 4V (quenching) heads and produced 450 HP and 491 Lbs/Ft. of torque. Although those numbers were achieved well above the 5200 RPM mark.

Edited by DaveMT
Sorry, reply was posted to wrong forum subject.
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Welcome from west Michigan!

What do you plan to do with the car? Race, cruise, road trips? That should affect the decisions you make regarding engine modifications. What rear gear is in the car. Don't get carried away and take the fun out of driving.

[align=left]Jeff T.

 

When I die I want to die like grandpa, peacefully in my sleep... not screaming, like his passengers. [/align]

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Hello and Welcome from Michigan. Great looking car you got! 
I see you mentioned Hooker Super comp headers as well as the comp cam. I would not go with the super comp headers, they hang too low and don’t fit that good. I just not too long ago rebuilt my engine and put new headers on. I got the Hooker competition #6915 black ceramic coated ones and they fit perfect.

John - 72 Q Code

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Hello and welcome from SW Ontario, Canada.

That's a really nice car you picked up and I'm sure you'll enjoy "playing with it" to make it yours.

BUT, as others have mentioned, decide what you want to do with the car before spending money you don't need to. Tuned right, that M code will give you all the thrills you want without overdoing it. My 71 M code, (4 speed) with a slightly better than stock Melling cam, stock intake and manifolds, and a 3.25:1 (now) Traction-Lok diff. will spin the tires with ease. If it had a 3.50:1 diff, it would give me everything (and more) I would want for a cruiser. 

It's your car, your way, just saying don't unnecessarily go overboard.

Geoff.

 I learn something new every day!

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On 8/1/2020 at 3:33 PM, DaveMT said:

Yes, I do have power steering on my Mach-1. According to the Hooker website and Summit Racing's website these will fit but I was hoping someone out there could confirm that before I purchase them. Nice stang by the way. That's pretty sharp! I need to reupholster my interior also. Both front seats are torn and my drivers side armrest is badly damaged.

I searched high and low for headers that were PS compatible but just kept coming short.  I spoke with the Sanderson Techs and they assured me that it was.  If you have your mind set on Hooker, you might want to do the same before your order.  Also, very important, check the condition of your engine mounts.  The muffler guy that did my exhaust system (including the Sanderson Header install) told me that my engine mounts were worn and needed replacement.  He had much difficulty routing the exhaust to get by the mounts and the left header was touching the piping.  I ordered new mounts and installed them myself.  The headers now have plenty of clearance........but we solve one problem and create another.......the repro mounts are out of spec and the engine now sits lower (thank you PRC) and the fan blade scrapes the bottom of the shroud.  I found some engine mount shims on Speedway Motors and will try to get them installed before too long.  Hopefully that will be it and done! 

9-20-19-Mine-Again.jpg1972 Mach 1 351 Cleveland Ram Air, C6, 9 inch with 3.25 Posi, Sanderson Ceramic Headers, 2.5" dual H Pipe exhaust w/stainless tips, MSD Ignition, Edlelbrock 4BB Carb, Wilwood Front Discs, Summit Racing Rear Discs.

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10 minutes ago, Bobby said:

I searched high and low for headers that were PS compatible but just kept coming short.  I spoke with the Sanderson Techs and they assured me that it was.  If you have your mind set on Hooker, you might want to do the same before your order.  Also, very important, check the condition of your engine mounts.  The muffler guy that did my exhaust system (including the Sanderson Header install) told me that my engine mounts were worn and needed replacement.  He had much difficulty routing the exhaust to get by the mounts and the left header was touching the piping.  I ordered new mounts and installed them myself.  The headers now have plenty of clearance........but we solve one problem and create another.......the repro mounts are out of spec and the engine now sits lower (thank you PRC) and the fan blade scrapes the bottom of the shroud.  I found some engine mount shims on Speedway Motors and will try to get them installed before too long.  Hopefully that will be it and done! 

What did the mounts you took out look like (std or clam shell/captive mounts). There are different perches and mounts for 73 than there is for 71-72. The 73 mounts are not being reproduced so I ended up switching my perches over to the 71-72 perches and using the available 71-72 mounts and everything fit perfect. Also I am running headman headers with power steering with no issues. I do not recommend shims on engine mounts. 

73 Grande H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

 

- Jason

 

 

082-hot-rod-power-tour-2017-1970-1970s.jpg

 

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On 8/1/2020 at 3:33 PM, DaveMT said:

Yes, I do have power steering on my Mach-1. According to the Hooker website and Summit Racing's website these will fit but I was hoping someone out there could confirm that before I purchase them. Nice stang by the way. That's pretty sharp! I need to reupholster my interior also. Both front seats are torn and my drivers side armrest is badly damaged.

BTW, Thanks for the compliment!  Yours is very slick as well!  I had to replace the interior of mine after I purchased it.  Riddled with mold!  I installed two new Procar II leather reclining seats with adjustable lumbar.  I took the back seats to an upholstery shop and had them replicate the design of the new front seats but in vinyl.  They fabricated new cushions and had blasted the frame and repainted.  All new....pricey but new!

9-20-19-Mine-Again.jpg1972 Mach 1 351 Cleveland Ram Air, C6, 9 inch with 3.25 Posi, Sanderson Ceramic Headers, 2.5" dual H Pipe exhaust w/stainless tips, MSD Ignition, Edlelbrock 4BB Carb, Wilwood Front Discs, Summit Racing Rear Discs.

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2 minutes ago, 73pony said:

What did the mounts you took out look like (std or clam shell/captive mounts). There are different perches and mounts for 73 than there is for 71-72. The 73 mounts are not being reproduced so I ended up switching my perches over to the 71-72 perches and using the available 71-72 mounts and everything fit perfect. Also I am running headman headers with power steering with no issues. I do not recommend shims on engine mounts. 

Mine were the clamshell type.  The edges of the clamshell is what was causing clearance issues with the headers.  In lieu of shims, what do you recommend?

9-20-19-Mine-Again.jpg1972 Mach 1 351 Cleveland Ram Air, C6, 9 inch with 3.25 Posi, Sanderson Ceramic Headers, 2.5" dual H Pipe exhaust w/stainless tips, MSD Ignition, Edlelbrock 4BB Carb, Wilwood Front Discs, Summit Racing Rear Discs.

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