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-   -   69 Mustang Conv. G-Machine (https://www.lateral-g.net/forums/showthread.php?t=7022)

Roger Poirier 08-22-2007 10:31 AM

Quote:

Originally Posted by Hdesign
You guys did an amazing job so far!

You must be a hard sell.... :rofl:

R.P.

HRBS 08-22-2007 12:31 PM

Thanks Ben !
The light is at the end of the tunnel. (i think i can see it :D )

DYNO RESULTS ARE IN !!!!

The engine internals are basically a stock '93 5.0L (cam, heads, etc).
We changed the upper and lower intake to a Cobra set up and upgraded the injectors to 35lbs from the stock 19lbs. Also bolted on a set of JBA headers and thats it.
The supercharger is a basic Paxton Novi 1000 pushing only 5psi of boost.

Base line:
Stock engine at crank = 245hp
Stock engine at rear wheels = 195hp

New Set-Up:
RWHP = 270hp
Approx. hp at crank (based on 20% loss) = 350hp

HP Gain was a approx 105hp !!

BTW... The car only weights 3100.
Should be a FUN ride....:unibrow:

Sales@Dutchboys 08-22-2007 12:39 PM

Sweeet! lol :thumbsup:

Paul

HRBS 08-22-2007 03:47 PM

Here are some old pics from early July.
I'll have some new ones with the new mercedes canvas top and full interior within a week or so. But for now... here you go...

http://i241.photobucket.com/albums/f...g/P0002336.jpg

http://i241.photobucket.com/albums/f...g/P0002337.jpg

http://i241.photobucket.com/albums/f...g/P0002335.jpg

andrewmp6 08-26-2007 01:27 AM

i never understood why ford used different quarter panels on the coupe/vert and the fastback in 69/70 when the rest of the years they all looked alike. but doing the quarter panels like you did gave you more room in the rear and they look alot better.

Ummgawa 08-26-2007 06:37 AM

Steve

Awesome car. Can you share with us how you did the fastback mods? Did you cut in a fastback trunklid with a coupe/vert lid and then add the quarter extensions ends from a fastback? I did a Boss 302 vert clone (obviously) way back in the day and wanted the look you have achieved, but I went on and used the Shelby stuff, filled in the back panel. Never was happy with the results. The dude that bought it loved it though (ha ha).

By the way you nailed what Ford missed in the fastback look you have done. I love convertibles and have owned a few 69-70's but that was always the weak spot design wise when you got to the back of the car, It's like they just gave up. Again, Shelby treatment looks great(perfect for a Shelby-mind you) But you nailed it for a stock body mod.. I am a GM man all the way, but seeing your finished product makes me wish had one of those 69-70 verts again.

Thanks again for the awesome pix!

HRBS 08-26-2007 04:21 PM

Thanks Andrew.

Ummgawa:
I too am a die hard Chevy guy myself.... but have to admit... this is one of my favorite builds. Its so different than anything I've done. I am not turning into a Ford lover.... but it has made me like these old Stangs alot more.
These pics show how and where we grafted the quarters on. They started as full quarters (not skins). We cut them off where we wanted in order to fit them properly.
These pics dont show (what I think) you were asking for.
But I'll try to explain here:
We bought fastback quarter extensions and a fastback trunk lid (just for the spoiler portion) The major differences between the two models are that the fastback trunk lid is about 4 inches shorter than the coupe/conv. and the quarter extensions are about 2 inches longer (per side). The other major problem is that the quarter extensions are pot (cast) metal in which is impossible to weld. So the major surgery (other than the obvious quarter panel change) is that we had to cut 2 inches out of the middle of the fastback extensions and used a panel bond adhesive to attached the end face to the remaining extention. That seemed easier than cutting the last 2 inches off and fab'ing a new end. Then after both sides were done we cut off the spoiler portion of the fastback trunk lid and cut it in half. We then welded it to the conv. trunk lid and fabricated a 4 inch "filler" peice in the center.
After all that was completed we had to modify the rear quarter window track assembly so that the windows would roll down with the fastback scoops in place. (fastback rear quarter window are stationary because of the scoops).
All in all, it really was an enormous undertaking. But obviously it CAN be done.

http://i241.photobucket.com/albums/f...g/P0002305.jpg

http://i241.photobucket.com/albums/f...g/P0002303.jpg

Ummgawa 08-26-2007 05:08 PM

Steve

My hats off to you dude. When I saw your build and the finished product, I thought about all of the 69-70 Stang verts that I have passed on because I could not achieve the look you have. The fastback quarters have what looks like a sweep at the top of the side profile where the Verts looks strait as a Preacher.I am certain it is an optical illusion due to the upsweep of the Fastback quarter extensions.

Do you have pix of the quarter extensions and how you modded them?

By the way thanks for the reply. Now if you'd come up brackets to install an LS motor in a 69-70....

Ummgawa 08-26-2007 05:15 PM

Well, I just noticed from the pix you posted that it appears that you grafted the entire fastback quarter onto the vert, sweeping over the top of the rear quarter. If I sent you a trunk lid and a pair of quarter extensions, could you do the mod for me? If you are like me, the first time is a pain, but the second time I'm alot better. Of course, you might not want the pain again. I tell you, that mod would make even the Grande coupes look good.

HRBS 08-26-2007 05:25 PM

They do have a bit of a bow. Its slight enough that its noticed more due to the scoop placement.
As far as doing another set..... it is nearly impossible to do anything of this nature without the actual car. Every piece is unique in its own way. If it were something to be done, I wouldnt be able to guantee the fitment because of the varibles in relation to the quarter extension fitting flush on the quarter and having the spoiler mounted so that the height is correct as well as it all lining up. Also gapping comes in play when triming the quarter extensions. The exact dimension of our set-up may not be the exact as yours. Then you may have a larger gap on one side than on the other. etc.
I think with the info provided, a experienced body shop with some custom work under their belt should be able to get the job done. But I can tell you this.... it'll be an open ended est due to the nature of the job and not being able to put an est. time on it !


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