Couper

Whats the weight of a stock 289 vs 429/460, motor only?

andrewmp6

A 385 with iron heads and intake your looking close to 600lbs fully dressed.Now if you use alum heads and intake it will cut the weight back.

67mustang302

Stock all iron 289/302s were only like 450-475lbs iirc Aluminum heads/intake and you're down to a little over 400.

Norm Peterson

I'm finding that the 429/460 weighs more like 640 lbs.

(Link)

289/302's have been listed variously between about 460 and 470-ish.

Some magazine - might have been "Car Life" - published a fairly extensive list of car and engine specs for the 1968 model year, and I know that weights for most engines were given. I'll try to remember to look it up tonight after I get home.


Norm

andrewmp6

640lbs i was close lol.

2+2GT

More like 640 for a 385 (429/460) and 625 for an FE. The 289/302 tips the scale at about 460.

I'd say if you used aluminum intake, heads, and tube headers, you'd end up with a 460 that weighed less than a stock 390. It'd still weigh more than a 302.

Think about this, though. People talk about big-block Mustangs being nose-heavy. The 69 428 Mustang has the same front/rear weight bias as the 88 5.0 Mustang. I don't hear about the 88 being nose-heavy.

frdnut

I recall the 460 being more like 700ish lbs..They are quite a bit heavier than an FE and much heavier than a 289....Here is a listing of wieghts..

http://raceabilene.com/kelly/hotrod/engine.html

2+2GT

There are many sources of weights, and the 385 engine seems to vary by nearly 100 pounds. I'm guessing some are with/without accessories. No one breaks out the 428PI as lighter, although with an aluminum intake it has to be at least 50 pounds lighter. The FE intake is huge.

If he's trying to find info about converting his Mustang to the big engine, here's some very detailed info:

http://thecurb.us/Webazine/Pits/460i...ev-460in69.htm

JMD

BOOKMARKED!!! Thanks!

Norm Peterson

Probably because you can't make a Fox all that much less nose-heavy and still have a V8 under the hood. Certainly not for cheap.

I'm sure that any moderately serious Fox-body autocrosser would have given you an earful about whether the car was nose-heavy or not . . . and then some.


Norm