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Mustang with a twist

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Old Sep 10, 2003 | 08:57 PM
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From: SE Michigan
Car: Bright Red 91 GTA
Engine: CARBED LT4
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Mustang with a twist

MY buddy and i were tossing the idea about something yesterday..

Were thinking of buying a clean, straight 4cyl mustang chassis..then building a 406 SBC for it...were gonna use a 350 tranny with the ford 8.8 rear..i know well have to modify the craddle for the motor and cut the driveshaft..What other modifications have to be done in order for this to work....
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Old Sep 10, 2003 | 09:07 PM
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From: CT
Car: Mustang
Engine: Bolt Ons
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Axle/Gears: 3.73
Why not build a Ford motor, make it easy and just as fast? I am not a fan of mixing and matching parts like that, but hey whatever you want to do go for it!
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Old Sep 10, 2003 | 09:24 PM
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From: winthrop harbor, il & plymouth, il
Car: 1986 camaro
Engine: 383 sbc
Transmission: th-400
Axle/Gears: 4th Gen 10 bolt/Detroit TrueTrac 4.
Re: Mustang with a twist

Originally posted by f-crazy
What other modifications have to be done in order for this to work....
a registration to a mustang site.
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Old Sep 10, 2003 | 09:34 PM
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Nic
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From: Richmond, VA
Car: 1993 Ford Mustang
Engine: 5.0L
Transmission: T5
Personally, I'd love to see an LS1 powered fox body.
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Old Sep 10, 2003 | 09:51 PM
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If you're going to do something like that, you're going to have to get a little more oddball than a 400 small block, just because there's no real reason to do it other than to do it.
Try a big olds buick or caddy. Even though there's still no real reason to do it, the huge motor factor is a good excuse and there's a coolness factor in having a 500 caddy in anything nowadays.

If you still insist on doing the small block swap, the main thing is making sure everything clears, you'll probably have to do some fuel system modifications if you're going from a fuelie 4 banger to a carbed engine, or if you're going efi, you'll still need to change the fuel pump to one that can support twice the motor.
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Old Sep 10, 2003 | 10:13 PM
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From: Monticello, IN USA
Car: 1991 Z-28
Engine: 350
Transmission: T-5 (gonna buy the farm)
My close friend did this in high school. As far as mounting the engine, he ha to beat the firewall for the HEI to clear. Made motor mounts out of 3/8" steel plate. Bolted those to what would be the crossmember mounts from a Chevy equipped car, then welded the plates to the Mustang frame. He went carb to carb so the rest was pretty easy.
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Old Sep 10, 2003 | 10:16 PM
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From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
Anyone ever seen that music video (Tragically Hip i think) that had the Trailer Park Boys putting a 350 into some Ford truck? thats what just came to mind, lol
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Old Sep 10, 2003 | 10:31 PM
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From: Philadelphia,Pa
Car: 83 Z28
Engine: 400sb
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i have a friend who bought a 5.0 that someone done this too on the spray it runs 11's
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Old Sep 10, 2003 | 10:41 PM
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From: Jacksonville, FL
Car: 89 base 'Bird
Engine: 507ci Caddy
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Originally posted by johnsjj2
My close friend did this in high school. As far as mounting the engine, he ha to beat the firewall for the HEI to clear.
What thou's knowledge can't fix thou shal use thou's hammer to make worketh. It's called "adjusting" or my favorite "I needed to clearance it".
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Old Sep 10, 2003 | 11:09 PM
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Just remember if you go for the 4 banger model (which isnt a bad idea) you'll have some parts swapping to do. I forget what all isnt on there, but the rear isnt going to be the 8.8, it'll be the puny 7.5
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Old Sep 10, 2003 | 11:30 PM
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From: Schaumburg, Illinois
Engine: slowtacular L03 305
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Actually the jumbo engine thing sounds fun, deffinantly the 500 caddy. How about a 1.3 rotary from a RX7, turboed of course, or maybe a 2.5 evo 4cyl out of an E30 M3. Heck, lets get weird and go with a company that unfortunatly had to die and do a 401 AMC block. Don't know much about actually doing it, but just some suggestions. Oooh ya do an independant rear and make it a massive G-machine.
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Old Sep 11, 2003 | 01:43 AM
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From: BFE, MD
Car: 13 Ram 1500/ 78 Formy
Engine: 5.7 / 7.4
Transmission: 6sp / TH350
Axle/Gears: 3.55 posi / 3.23
you could always go crank trigger ignition. Keeps teh firewall clean & increases the coolness factor exponentialy . Subframes a must, but you knew that, and a sticker "Ford, minus the curse"
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Old Sep 11, 2003 | 03:07 PM
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From: Monticello, IN USA
Car: 1991 Z-28
Engine: 350
Transmission: T-5 (gonna buy the farm)
Wayne, the friend who did this, was going to get a sticker made saying "Body by Ford, ***** by Chevy."
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Old Sep 11, 2003 | 04:47 PM
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From: maryland
Originally posted by Nic
Personally, I'd love to see an LS1 powered fox body.
now that would be somethin to see....i wonder how fast?
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Old Sep 11, 2003 | 08:49 PM
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From: SE Michigan
Car: Bright Red 91 GTA
Engine: CARBED LT4
Transmission: MK6
we want to do it because, well because it would **** a lot of mustang owners off...and 2 because it would be really cool IMO..

An all black LX with draglites looks pretty tough..now seing a bowtie on the side of the cowl hood and a "built ford tough with chevy stuff" sticker on it, would seal the deal...

itll be a track only car so all the wiring will go...excaept for the nessecities..

what can be done to a 500 caddy to make it over 1 hp/ cu in.?
we kinda thought 406 because its a smallblock and the "biggest" you can put together without major machineing..and we didnt want to hassle with a big block..

but now that 500 caddy is appealing...what about the 500 with the 472 heads worked over heavily....what could be done about the cam?

so basically it pretty straitforward with some minor mods to existing parts
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Old Sep 11, 2003 | 09:14 PM
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A friend of mine is working on a LS1 swap into a fox chassis Mustang. LS1s are dropping off Ebay for $3k-$3500 w. auto trannies, ecu, accessories and harness.

Couple the Fox's light weight and great launching abilities on the street with the lightweight, powerful LS1 and it's a recepie for a streetsweeper.

AJE makes a tubular k-member for the Fox w/ Chevy motor mounts on it also. There would be almost NO fab with this project.

Headers, exhaust, a mild cam and LS6 intake with a little squeeze and you're looking at a 10sec ride on tire in a lightened car!!
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Old Sep 11, 2003 | 09:21 PM
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From: Richmond, VA
Car: 1993 Ford Mustang
Engine: 5.0L
Transmission: T5
Originally posted by RoadRacer
A friend of mine is working on a LS1 swap into a fox chassis Mustang. LS1s are dropping off Ebay for $3k-$3500 w. auto trannies, ecu, accessories and harness.

Couple the Fox's light weight and great launching abilities on the street with the lightweight, powerful LS1 and it's a recepie for a streetsweeper.

AJE makes a tubular k-member for the Fox w/ Chevy motor mounts on it also. There would be almost NO fab with this project.

Headers, exhaust, a mild cam and LS6 intake with a little squeeze and you're looking at a 10sec ride on tire in a lightened car!!
That's cool as ****! Didn't know it would turn out that simple...it may very well end up being my next project after the HX35 powered 2.3T hatch I'm about to start building in a couple weeks.
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Old Sep 11, 2003 | 10:11 PM
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From: Jacksonville, FL
Car: 89 base 'Bird
Engine: 507ci Caddy
Transmission: BOP TH400
Originally posted by f-crazy
what can be done to a 500 caddy to make it over 1 hp/ cu in.?
we kinda thought 406 because its a smallblock and the "biggest" you can put together without major machineing..and we didnt want to hassle with a big block..

but now that 500 caddy is appealing...what about the 500 with the 472 heads worked over heavily....what could be done about the cam?

so basically it pretty straitforward with some minor mods to existing parts
Check out http://www.hwforums.com/2089/ and www.500cid.com oh yeah also www.cad500parts.com/ for info on the big Caddy. Actually a 472 and 500 use the same heads, they just used a diffrent piston. Now the 425 and 368 which are both exteranally the same as a 472 or 500 use diffrent heads. Also a new company has started to make aluminum heads for the Caddy. As for the cam I had comp grind a BBC N2o HP grind onto a Caddy core but MTS and CMD both offer their own cams from stock to wild and CMD also has a roller cam. One last thing Popular Hot Rod's engine master's deal has 3 big Caddy engines in it this year so when the results get printed that will give you an idea of what kind of power to get with what parts.
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Old Sep 12, 2003 | 10:37 AM
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From: Hillsborough, NJ, USA
Car: 1996 Jeep Cherokee
Engine: 4.0
Transmission: 5 speed
Ever seen a 3.8 turbo motor powering a fox body? I have! SOOOOO COOL!!!!!
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Old Sep 12, 2003 | 11:32 AM
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From: SE Michigan
Car: Bright Red 91 GTA
Engine: CARBED LT4
Transmission: MK6
i thought the 472 heads had a smaller chamber hmmm

so aside from the k-member..it should be a bolt it..unless we use this caddy 500 motor...then what would have to be done to fit a BBC motor in a stang
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Old Sep 12, 2003 | 11:33 AM
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From: SE Michigan
Car: Bright Red 91 GTA
Engine: CARBED LT4
Transmission: MK6
also what is the bore stroke on these things lol
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Old Sep 12, 2003 | 11:39 AM
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From: SE Michigan
Car: Bright Red 91 GTA
Engine: CARBED LT4
Transmission: MK6
#15 SERIES GRINDS - RPM RANGE 2200 - 5600. Requires valve spring kit. Intended for 10 - 1 compression or higher. Also works very well with a low compression engine running nitrous oxide. Really turns on with after market intake manifold and headers. Cam will still run power brakes and have a nice "lope" to the idle. A high compression fitted with an after market intake, headers and a series #15 cam will pull a 3600 lb. car through the quarter mile in the low 12 second range. If you add 3.73 rear gears a 2500 rpm stall & open headers, high to middle 11 second quarter mile times are possible
MT15 280 286 550 562 VT28MT15

i wonder how fast it would be only pulling 2,800 pounds

damn now i really want a caddy 500 lol
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Old Sep 12, 2003 | 08:06 PM
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From: Richmond, VA
Car: 1993 Ford Mustang
Engine: 5.0L
Transmission: T5
Originally posted by Ian_F
Ever seen a 3.8 turbo motor powering a fox body? I have! SOOOOO COOL!!!!!
Yea, a bunch...of course, they were turbocharged Ford 3.8's...nowhere near as nasty as GM's version.
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Old Sep 12, 2003 | 09:33 PM
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It can be "Ford Tough and Chevy Stuffed" HAHAHA
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Old Sep 14, 2003 | 07:21 PM
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From: LaFayette, NY
Car: '10 Subaru Forester
Engine: 2.5 Boxer
Transmission: 4EAT
Axle/Gears: 4.44
How about a 5 cyl turbo'd Volvo engine?
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Old Sep 14, 2003 | 10:26 PM
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From: Jacksonville, FL
Car: 89 base 'Bird
Engine: 507ci Caddy
Transmission: BOP TH400
Originally posted by f-crazy
also what is the bore stroke on these things lol
A 500 uses a 4.300 bore, 4.304 stroke. A 472 also uses the 4.300 bore but a smaller around 4.060 stroke. As for the heads between '68 and '73 the 472 and 500 used a 76cc chamber. In '74(the last year of the 472) they switched to a 120cc chamber up '76. You might be thinking of the 425('77 to '79) head which has a 96cc chamber and you can gain some horsepower on the 74 up motors by swaping it but people argue about it on a juiced up motor claiming the smaller ports decrease the smaller chamber gains. Just as a side note CMD dyno'd a stock(manifolds, cam, everything stock) freshly rebuilt 120cc headed 500 at 300hp and 493 ft lbs of torque.
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Old Sep 15, 2003 | 02:28 AM
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From: Hillsborough, NJ & SJU in Philly
Car: 1986 Trans Am
Engine: carb 305 LG4
Transmission: TH700-R4
Yea, a bunch...of course, they were turbocharged Ford 3.8's...nowhere near as nasty as GM's version.
I was taking about the turbo 3.8 that GM made. Turbo Buick powered Fox bodies are out of control! By the way, this is Ian_F, I am just at Matt's place.
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Old Sep 16, 2003 | 02:43 AM
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From: DARLINGTON, SC
Originally posted by 25thmustang
Why not build a Ford motor, make it easy and just as fast? I am not a fan of mixing and matching parts like that, but hey whatever you want to do go for it!
if going the mustang route i would suggest building a 347 a lot faster than the 355 or equivalent and no welding or header mods been there done that had a 383 chevy and turbo 350 in 85 gt........right now we are running a 555c.i bbc and powerglide in 88 gt in the 28.5 drag radial classor 10.5 class major mods for headers and such
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