Accurate 67/68 Fastback curb weight?

D

Demonic

New Member
Apr 27, 2004
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#1
I have scouted out various Mustang fastback sites and each post various car curb weights.

Anything from 2,600 to 3,300 lbs. Does anyone have a stock fastback and know the accurate curb weight of the car (without driver). Oh yea, a 67 or 68 preffered.

This will ultimately help me get an accurate estimation on how much my car will weigh with my desired engine/body pannels ect... I wanna get all the parts and combinations down on paper first before I start a build. I'm looking to make mid to low 10's Naturally Aspirated, so this will help out alot, thanks in advance!
 
#2
my 66 coupe weighed 2860 with half tank gas
full steel, aluminum intake, c4, 8inch rear, 289
it had been raining; so it might be a few lbs high

i imagine a fastback will probably weigh 100lbs more as well as an extra 100lbs for the larger body style
id say, about 3000 or so depending on aftermarket bodypanels, and drivetrain
 
#3
Well the problem is. What equipment it came with. Those cars had so many choices its hard to narrow it down. You had 6cyl to big V8's. You had 3 speed, 4 speed, c4,c6 trannys. You had 8" and 9" rearends. There is the standard and deluxe interiors. Options from p/s,p/b,a/c, fold down rear seat, and tilt breakaway columns. There is no set weight. They weighted from stripped cars to loaded cars. I have owned 4 1967 fastbacks and none weighted the same. All had different things on them.
Post what your car has or is going to have (if you plan on taking something off or adding that it will have) and maybe someone will have a car with that setup. Best I remember my first GT big block car with a 4 speed and deluxe interior with a/c,p/s,p/b was 3300 pounds.

Bud
 
#4
Ok well I am in the process of changeing over brand loyalty, so this is kinda hard for me.

I'v been a Pontiac F-Body guy for as long as I can remember, I love the 70-73 Formula/Trans Am 455's. Now nothing against pontiac, cause they are awsome cars, but lets face it, pontiac engines aint cheap. Theres nowhere near as much support for pontiac engines as there are for ford/chevys, so it's expensive to build up a strong pontiac motor in the 550-600 hp range (this is my ideal range for a 10 second car naturally aspirated). And if I'm being totally honest, the body styleings of the 67/68 fastbacks rival/beat that of the 70-73 trans ams. Also to build a street/strip 10 second trans am, it's gonna weigh nearly 4,000 lbs with a driver. The car itself is wider, longer, heavier, and thus takes alot of horses to get it in the 10 second club.

Also to install a rollbar, I have to basically make access to the rear seats virtually impossible by adding a cross bar and whatnot to get it connected to the unibody frame. With the 67/68 fastbacks, you can install a rollbar and have it hidden within the interior side pannels, and it doesn't impead entry/exiting of the vehicle. Thats one thing I love about the fastbacks, I can have a street legal 10 second car that still looks stock. Also the fold down seats with the trap door makes it better for travel since the f-bodys have really horrible trunk space.

And the fastbacks are alittle smaller makeing em easier to manuver into compact parking spots in a big city such as San Diego.

So I figure if I can get a 3,300 lb fastback setup, it will take less HP to get it into the 10 second club than a 4k lb car. And ford engines are cheaper to build so ultimatly I wont have to spend a fortune on the motor. And another plus is the fastbacks seem to be appreciating value at an alarming rate, so should I ever be forced to sell my car, I can nearly get back what I'v put into it, unlike f-bodys which don't sell for alot. (not that I'd wanna ever sell my car, but sh1t happens and sometimes u gotta sell stuff).

So I figure it's gonna take a 428 motore to get what I'm looking for. Tranny is still undecided, I would definatly wanna upgrade the stock suspencion (which I hear is terrible on fastbacks). Still not sure what to do with the body, either go for a gt type replica or an eleanor kit with black paint/gold stripes.

Car will be a semi daily driver, mostly for cruisein and occasional track use.
 
#5
You can get that kind of power out of engines smaller than a 428, but yeah, it will be easier if you have bigger displacement. And yeah, parts are cheaper for these cars, and they are lighter. If you want really light, get a '65-'66 coupe.

Welcome to stangnet!:nice:
 
#6
Well I'm sure it's far easier to get 550+ hp from a 428 than it is say a 302. And probebly more reliable. Course I'm talking naturally aspirated here too... Anyone can get a 200hp shot of Naws and cheat there way into low digits :D

I know the coupes are lighter, but I prefer the body style of the fastbacks more, guess it's an F-Body type thing. I can't go from a trans am's to a coupe with absolutly no body scoops :)
 
#7
Ok. Now we have an ideal what you want to do. You might want to look into the small block stroker motors. I can tell you for a fact its going to be tough to get 550 hp out of the 390/428 motors as a daily driver. That is real close to the limit the 2 bolt block will handle before it splits. 400-450hp is more on the realistic side. That can be done with a cam,intake and headers. And if you havent priced FE motor parts yet. You might want to start looking now before you buy one. Good intakes are $450 and up. Heads start around there for the factory stuff and good rocker arms and shafts are in that price range. Go to keithcraft.com and look at the FE motor info on his site. It might change your mind. I have two motors now a 390 and a mixed 390/427/428 combo. I still find myself looking at the stroked small blocks because of price. And working on a 390/428 in a early mustang is not the easiest thing you will ever do either.
Bud
 
#9
1969mach1351 said:
Looking through some books I found a bottom of the line fastback with no options weighs 2605 lbs for 1967 and 2659 lbs for 1968. One book starts to recognize 6 cylinders from 8 cylinders in 1969. They add about 200 for a V-8.
Click to expand...

Alright then a stock no option 67 fastback with a v-8 is looking like 2.8k+ Course depending on my motor choice, that will definatly go up. But I can also save in areas like the hood and trunk lid by going for fiberglass, use a aircraft aluminum drive shaft, switch out the drum breaks for all disks, ect.. ect.. How many of you guys have opted to keep the power steering in your cars? I know it saves weight and opens up a bit of space in a already compact engine bay, but how tuff is it to turn those wheels when a fastback is something like 60%-40% front-back weight distribution?

Depending on how much weight I can conserve, I might not need to push so much HP from those 2 bolt blocks. I'm just used to haveing 3750+ lb cars so I tend to overdo the hp figures for benchraceing.

But to say 500+ is pushing the limit on an FE block, I have seen some FE blocks over 600 hp. Course they were cammer engines (sohc) rated at 618 for 1 carb, and 650+ for 2 carbs. And I'm pretty sure they used the same 427 FE blocks used in the sideoilers. They have a high nickle content and are slow cooled, so they are pretty tuff blocks. But those FE blocks can be pretty expensive just for the block itself. 2k comes to mind, and thats not even guaranteeing that it will hold up, so you gotta sonic test em. I gotta do more research on the engine options, and I'm single with no dependants so money isn't much of a problem when it comes to devotion to cars. I'v seen various pontiac guys put 20-25k in there engines, and I'm looking to make nearly as much power for about half.
 
#10
But to say 500+ is pushing the limit on an FE block, I have seen some FE blocks over 600 hp. Course they were cammer engines (sohc) rated at 618 for 1 carb, and 650+ for 2 carbs. And I'm pretty sure they used the same 427 FE blocks used in the sideoilers.
Click to expand...

I said "550 hp out of the 390/428 motors as a daily driver. That is real close to the limit the 2 bolt block will handle before it splits". Now your talking 427's. Most if not all of those were 4 bolt blocks. I know guys pushing close to 1,000 hp out of FE motors. But they are not street cars. Its all about money. Be ready to spend 8k+ for an FE motor that will be a nice street motor. And 15k+ for some real HP. The motor I have built now is pushing 550hp and is not a street motor that you can drive alot without working on it or breaking something. It has a roller cam and an intake you can almost hide a coke can in. So a stock hood doesnt fit. I dont run any power or a/c-heat stuff at all. Plus your talking about using blocks that are 28+ years old too. Finding one that hasnt been bored more than a couple times is getting hard. Most say 40 over is about all you want to do to a 390 block. You can get the right combo on parts and make a nice street motor with some good HP. But your going to have to research it real good so not to end up with parts that will not work good together.
Bud
 
#11
Stock Mustang FE engines (390-428) are great and highly reliable torque monsters and bud4660 is dead-on with his analysis IMHO. The 427 is also an FE engine but it was never sold in a stock Mustang (there were a VERY few early 67 Shelbys that came with them before getting the 428CJ). The 427 is basically a race motor, it ran the strips side by side with the 426 Hemis as well as the NASCAR high banks (the GM rats were not competition for them although they were available is stock cars whereas the 427 generally was not (I know about the fairlanes)). Basically don't confuse them the 428 engines will cost you big money for that kind of power and the 427 is HUGE money. If you want nearly 600 NA horses from a Ford without breaking the bank or losing streetability try the 385 series motors. These were the 429/460 stock engines that came out in 72 or 73. They can be had with 4-bolt mains and are still in production (or just recently phased out, not 100% sure). They can be bored/stroked to 600 cubes, and the parts are cheaper than the older designs.
 
#14
Well not that I'm going for a numbers matching engine/car combo here so my engine options are wide open. However, I wouldn't feel right putting in some new over the counter generic crate engine. Like those 5.0 litre cate motors, no thanks.

As it is, I found a shop that can produce decent 428 engines putting out 500+ HP in the 10k range naturally aspirated. Ultimately I'd like to have an EFI setup, but thats a long way down the road.

Check out the shop, tell me what you think: http://www.fordcobraengines.com/mustang_eleanor_427w.htm
 
#15
Demonic said:
Check out the shop, tell me what you think: http://www.fordcobraengines.com/mustang_eleanor_427w.htm
Click to expand...
You DID ask right? Just so you know FoMoCo motor history is pretty confusing. The 427/428/429 were all quite different. That "427" is really just a 351W (there were two totally different 351s too, but that is in another thread) with a stroker kit. Not stock, and entirely what you describe as a "crate" motor. Don't get me wrong here though. I put a 351W into my 67 as well, they are great motors and I think you'll be quite pleased with that one. Once you stroke the 351W out to 427ci you are not gonna have a very high redline due to being under-square and all. But with the right internals it might make it to 7K.

EDIT: You'll also be happy to hear that getting an EFI onto the 351 is going to be much easier/cheaper than onto an FE motor.
 
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