engine weight ?

[Dave Samson]

Does anyone know the weight of 428 FE and 460 engines either with or without aluminum heads / intake?

[Toivo]

The 428 with AL heads, intake, waterpump is right around 520 pounds - give or take depending on what sort of block casting you have.

In full stock (iron) trim, it weighs in around 660 - again, depends on your block.

I don't know how exact you want, but these get you in the ballpark for FE's anyway.

Or see here

[Jeff Frigo]

This site below has a pretty compreshensive list of all engines' weight and size. Unofficial but interesting:

5.0 450
289/302 460
3.02BOSS 500
351W 510-525
351C 550
FE 650-670
429BOSS 635-680
427SOHC 680
429-460 720

The 460s are the heavy-weight winners! Ouch!

Info is at http://www.241computers.com/ford/eweight.html

[Dave Samson]

thanks

[Jeff Frigo]

Dave:

Who's da man? I would like to take credit for this, but all I did was to copy an old thread. Just did a search under "engine weights".

OK, I'm da man anyways.

[Dave Samson]

Thanks again Jeff.
Here's da story. we haven't seen Dominik for some time on the forum coz he has moved to Cape Town and apparently can only get to a slow internet cafe connection from time to time. He asked me for the engine weight, reason unknown to me.

Datsall, back to my stinking hot garage and ABS nightmare....

[Jeff Frigo]

No problem. I like to help when I can.

[webebob]

I assume these weights are for "stock" iron engines. Few cobra engines are all iron.
I failed to weigh my engine prior to dressing it, but the engine (460, alum heads, intake, waterpump) fully dressed (carb, alt, starter, flywheel, press plate,distrib ....) plus the Tremec tranny bolted to the back, all ready to drop in the car, sat on the scales at 795 pounds. I know the clutch, press plate and aluminum flywheel weigh 40 pounds right on the nose. Don't know about the tranny.
Bob

Originally posted by Jeff Frigo
This site below has a pretty compreshensive list of all engines' weight and size. Unofficial but interesting:

5.0 450
289/302 460
3.02BOSS 500
351W 510-525
351C 550
FE 650-670
429BOSS 635-680
427SOHC 680
429-460 720

The 460s are the heavy-weight winners! Ouch!

Info is at http://www.241computers.com/ford/eweight.html

[cobrashoch]

Guys- This is one I talked over with Dominik, Bob Putnum and others on another thread ,

Engine Size and Weights by Cobra Ed .

The 720 lbs weight for a 460 does not give the whole picture. Maybe someone more computer savy that I can put that thread on a link to this thread. Lets just say for now that engine weights are close together when things are factored together.

cobrashoch

[Dave Samson]

Not sure exactly what Dominik is up to, I think he owns a couple of engines stored in Germany and the US. Perhaps he wants to take them down to S. Africa because I know he has made some Mustang contacts down there and tells me that everything is dirt cheap.

[Toivo]

Originally posted by webebob
I assume these weights are for "stock" iron engines. Few cobra engines are all iron.
I failed to weigh my engine prior to dressing it, but the engine (460, alum heads, intake, waterpump) fully dressed (carb, alt, starter, flywheel, press plate,distrib ....) plus the Tremec tranny bolted to the back, all ready to drop in the car, sat on the scales at 795 pounds. I know the clutch, press plate and aluminum flywheel weigh 40 pounds right on the nose. Don't know about the tranny.
Bob

So my comparably configured FE with a 125# C-6 behind it comes in at 645 pounds (no fluid in trans), or 150 pounds less?
This explains a few things.

I really do forget, what's the bromide comparison for pounds-saved to HP-equivalent?

[ERA535]

Yup, then you use an aluminum flywheel and that FE becomes a virtual lightweight!!!! I knew I made the right choice!

[Dominik]

Thanks David,

the reason is: I have a 428 in Germany, but 460s are plenty in South Africa.
I called the SPF dealer in JNB and he recommended installing a 460.
Now that I am very concered about weight (I know, a lot f you would advise me to install a 351 instead) I try to figure the weight gain of a 460 with aluminum heads compared to a 428 with aluminum heads.

While we are at it: could a 351 be stroked to 427?
Now, THAT engine I had to order in the US, I am sure.
At least the crank and pistons / rods.

I know I could have searched the forum but that take a while - as does searching in my old (PC) data with my new Mac.

The internet cafe is fast enough, but the Mac at home isn't.

Dominik

[Toivo]

the 427 stroked-351 is becoming fairly common.

try DSS for kits or complete engines.

I believe you can buy the stroker kits now through Summit.

[Dominik]

toivo,

there is no real one on one hp / weight equivalent, but 10% less weight gives you 10% more "hp", which you really feel only up to say 85 mph. Above that your car's weight is small in comparison to your car's aerodynamic drag. Especially when you go faster.

It's a lot different at breaking or cornering in case you are racing. Every pound saved you save by the square. So 6 lbs saved is not twice as good as 3 lbs, but a lot more.

I won't go more in to detail here, but i.e. Posche went to great lenghts reducing the 1992 RS weight to 2700 lbs compared to the 3200 lbs for the street model.

Still that 1992 RS is a winner in his field compared to the new equivalent, the GT3, due to the weight(and rear end ratio in this case)
Just to give you an idea.

Dominik

[wilf leek]

Dominik - my understanding of the 351W stroked to 427 is that it has a problem with rod ratio, and a ? mark may be forming around the advisiablity of that configuration. Was why I stayed with the 408, and even that is a bit iffy to rev much over 6000.

Wasn't the 427 stroker the engine that the Butcher broke?? And he got deep into rod ratios after that, a good thread on this forum somewhere, or look at www.cobralads.com

Wilf

[CCX33911]

I missed the beginning of this thread. I weighed my stroked 427 on a stock car electronic scale and it was 503#. This is a cast iron block 427 with 428 crank (452 ci), dove alum heads, canton steel oil pan, Edelbrock water pump, lemans rods, complete FPP rocker arm setup, alum Weber intake, and alum Weber like throttle bodies. Complete engine less flywheel.

It would be nice if someone that installs a lot of engines in cobras, etc. would weigh each engine before install and let us know Easy enough to weigh engine on stand and subtract the stand weight. Most cobra motors have alum intakes and a large number have alum heads. It would be nice to get a apples to apples comparison.

[Dominik]

thanks,
I check out the butcher's page right away.