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71 Cougar 429 Clone
#1
Hi All

Since Mercury only built 448 71 Cougars with 429's, and only about 25 have been found, I'm having a hard time getting information about this family of car with a 429 installed.  I want to build a passable-looking clone...doesn't have to be exact, but close.

My 71 Cougar Base has a 351C-2V in it now, and I have a mildly modified 429 4-bolt main motor that's been on an engine stand now for 10 years.  It has Scotty Johnson ported D0VE heads, a pretty large cam, over .600 lift, and should put out 500 hp.  I have found the correct cast iron exhaust manifolds already, but there are still questions I have about the upcoming swap.

Motor mounts?  Does anyone make a good motor mount for our cars that won't tear apart at the drags?  I'm not fond of chains or funky torque limiters.

Exhaust system?  Is there a mandrel-bent 2.5 inch exhaust system available for factory manifolds?  Stock size is 2.25...I'd like to go 2.5 diameter.

Radiator?  Since I'm making a clone, I'd like to have an original looking radiator, not a modern aluminum one.  The tanks on my one-row radiator are good, and can be re-used.  I've read that the CJ cars use a denser fin count.  Recommendations?

Scoop?  Does anyone have an OEM 71-73 Cougar hood scoop they'd like to sell?  If it's white, that's a plus!

I'll probably think of more questions later...thanks for your help!

Gerard
San Diego area

[Image: 20180318_161343.jpg]
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#2
Ask over here also, https://classiccougarcommunity.com/forum...um.php?f=2
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#3
Welcome from Escondido. Nice ride you have there!

- Mike
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#4
(05-08-2018, 11:41 PM)mach71351c Wrote: Welcome from Escondido. Nice ride you have there!

Thank you!  We're in Ramona, sometimes we go to Cruisin' Grand.  Maybe we'll see you there!

Gerard

Here's the interior, original, except for the Bobcat steering wheel.

[Image: 20180408_132738.jpg]
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#5
Welcome and wow, apart from the front it looks so much like a Mustang Grandé, I'm amazed and never realised this.
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#6
runninpony 
Welcome from Omaha!
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#7
Welcome from Iowa.

'73 Grandé 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.

'73 F code convertible. Bright red. Needs total restore. (IE HOT MESS)

- Jason
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#8
welcome from el cajon ca, we met on grand 2 weeks ago . i have the orange 72 vert .you have a nice  nice car
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#9
Welcome.

Most of your 'factory correct' 429 questions can be answered here: http://429mustangcougarinfo.50megs.com/ I consult that site regularly as I try to make my 460 look 'period correct'.

The Classic Cougar Community Forums mentioned earlier are a great resource for parts and information. They also have a 71 429 Registry area: https://classiccougarcommunity.com/forum...m.php?f=40

Bob

Tachs, Voltmeters, Headlight kits, Wiper delays and more at
[Image: smlogo.jpg]
Rocketman's Classic Cougar (and Mustang) Innovations, LLC
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#10
I miss my M-code 4 speed 71 XR-7. Was a nice car to drive.

Crites Restorations sells the 460 swap mount kits. You'll have a hard time breaking them.

Since your car doesn't have staggered shocks, Flowmaster Mustang tailpipes will work fine. I'd probably have the H and center pipes fabbed locally.

Regarding the radiator, I'd just get myself a new replacement unit from RockAuto and paint it black. They're about $130.


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