suprathepeg

How easy is it to fit one of the newer Coyotes into a 69/70? I love these new power plants, would be a sick setup in a resto mod.

67mustang302

Not worth the money if you're just trying to get performance for value. The extra cost associated with it could be used to build a SBF with substantially more power.

The advantages of a Mod/Coyote are they look better, run smoother, can get better mileage and produce lower emissions. The disadvantages are the engine is physically larger, heavier, has a higher center of gravity, is much more difficult to work on, and produce fewer hp per $ spent.

Both SBF and Mod/Coyote can make lots of power, with the SBF being a lot cheaper to get the same power, whereas a Mod/Coyote can produce slightly more power for the same engine size but at a higher cost.

barnett468

do an internet search


heres some info but i think it may be possible to ibstall one without modifying the shock towers. this is the biggest question.

they make headers and tranny mounts for the swap.

http://www.mustangandfords.com/featu...g-coyote-wild/


the coyote is all aluminum, i have no idea what the weight difference is but doubt it weighs much more if in fact it weighs more at all.
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suprathepeg

No doubt you can get the same peak HP for less money. But can you get the same power band, dependability, smooth power the coyote gives with an older platform? I doubt it. The coyote is a really amazing engine, if you haven't owned one you won't understand...

That said I'm not necessarily gonna do it. The swap alone would probably be $20k in parts. I'm just wondering if it's being done at all.

jz78817

if the Boss 429 fit, I'd have to guess the 5.0 Coyote would too.

67mustang302

A Coyote weighs almost 450lbs I think. Which is about what an all iron SBF 302 weighs. You build a SBF like we build these days with aluminum heads and intake etc, and it's ~375lbs give or take? They're pretty tiny as engines go. OHC engines are just dimensionally huge, and even all aluminum it adds up pretty fast.

Granted, 50-75lbs of total vehicle weight isn't really much on a street car, but if handling matters, that's 50-75lbs over the front wheels of an already nose heavy car with understeering issues.

This gives an idea of the size difference between the 2 engine families, which is quite large. For an older 4.6 DOHC I think? 5.0 should be roughly the same.
http://www.jalopyjournal.com/forum/a...-0-jpg.356324/

67mustang302

Generally speaking, for the most part yes. Though there will be a slight power band advantage always going to the Coyote because of variable valve timing, and it will run a bit smoother. A built SBF will still run smooth for a pushrod performance engine, but just not as quiet and smooth as the newer stuff. But you can get older engines to produce a ton of broad power, be reliable and run smoothly, if you invest in the right parts and build it right.

That said, nothing is quite like a Coyote. It's a much more exceptional engine that most people realize. If you calculate out the BMEP of the engine (mean cylinder pressure, one of the best yard sticks to compare 2 different engines for performance), the 5.0 Coyote is right up there with the 4.3L Ferrari engine. The 4.3L just makes more HP because it's tuned to run at a higher rpm, but the cylinder pressure is extremely close. Which means the Coyote is an equally impressive engine, just tuned to run at more reasonable rpm.

Unfortunately the size of a Classic engine bay and the size of a Mod/Coyote, makes the swap not cost effective. Plus it can cause all sorts of suspension related issues with them.

If they dropped right in though, I'd have a Coyote and never look back.

67mustang302

Not necessarily, you'd be amazed at how much real estate DOHC engines take up. All those valvetrain components need a lot of space, and the heads end up being absolutely huge.

barnett468

the boss 9 fit ONLY AFTER the cars were sent to car kraft and had the shock towers severely notched.

bop11

That is an awesome picture comparison. Now I know why even small cars are so wide. And I thought the car companies wanted to give us passengers extra hip space.