347 vs Coyote

[Yankee313]

Hello all,

Just doing some initial research on a planned build coming up in the future. I was planning on using a Coyote crate for the coupe build, but I found I have access to a 347 through the same supplier. I know the Coyote is a big (physical size) engine, and have read its a tight fit in the coupe to begin with. So much so, that almost all superchargers would require hood modification (not that I want/need one). I found the 347 EFI with an 8 Stack that looks the original part, but I'm having trouble finding the actual physical exterior dimension of it. Would a 347 with an EFI 8 stack fit under the hood without too much modification? Or should i just stick with the original Coyote plan.

From an engine options video from Factory Five I watched, they highly recommend a 302 Windsor for its fit and reliability for first time builders (2400 lb car with 300 hp is still quite alot), so I was thinking going the 347 route would be the best of both worlds. Better fitment, classic shiny trumpets on top, and still provide decent power (crate engine is rated at 465hp).

Thoughts?

[UpNorth]

Hi Yankee313,

I have a 347 from Blue Print in my Gen3 coupe.
When it arrived I was suprised to see a regular round shaped air filter on top of my engine.
BluePrint told me after my inquiry about my 347 without the oval shaped air filter I saw on their website that it would not fit under the hood.
So I guess that you might have to rework the hood to make spave for an 8 stack.
Just my 2 cents.

Francois

[edwardb]

After a couple SBF builds, and now two Coyote builds, I'm a huge Coyote fan. So take that into consideration. :rolleyes: I have two responses: (1) For the Gen 3 Coupe, the Coyote is not a particularly tight fit. Nothing at all like stuffing a Coyote into a Roadster or Hot Rod. The Gen 3 space frame has plenty of room including for your choice of transmission with no issues, e.g. the T56 I put in mine. Accessories like power steering and A/C fit easily as well. So I wouldn't recommend "tight fit" as a decision factor. (2) People often complain about the Coyote being a complicated installation due to the electric fuel pump, return line, and a good share of electronics. I always point out that it's no different than any EFI installation. Which you're describing as your other choice. So I wouldn't make that a decision factor either.

With the two choices you've described, basically it's going to come down to which one fits the vision of your build. Sorry, I can't help with the under hood requirement for the 347 with an 8-stack. The Coyote with standard induction fits under the Coupe hood just fine. Good luck.

[David Williamson]

It's all a question of what look you want when you open the hood. The Coyote will be slightly easier to drive but not original looking. A 347 with stacks will look great and should fit but that will depend on how tall the stacks are. How high are the top of the stacks above the top of the block? I can measure mine if you need a reference point, it's a Fitech/air cleaner on a Dart 363 block so the same height as a stock 302 block. I have about 1 inch clearance under the hood.
David W

[David Williamson]

Tho top of my air cleaner is about 13 inches above the block but it is forward of the cowl. The hood at the cowl is about 12 inches above the block.
David W

[Yankee313]

Thanks for all the replies,

I now understand that some of the "tight fitment" of the Coyote in the coupe were from older posts, which was probably prior to the gen 3 coupe, so its good to know that issue has been addressed by FF. I'm still a ways out from purchasing my kit, so I'll see if I can see one of these engines in person. I do have some behind the scenes access to the supplier, so I could ask to get some measurements from the top of the stack to the top of the block to know what I would be dealing with. Thanks again!

[Tom Welch]

I have no issues with either way you go. The Coyote engine and tranny are great engines, but were a "tight fitment" on my wallet. :) Just my personal opinion. I like the look, sound and raw driving of my 302 (or the 347 in your case) push-rod engine. I was given the following good advice to consider. Think down the line on maintainability. With the Coyote and all its computer equipment, Are you confident you can work on it if there are issues or will you have to pay $100/hr to a mechanic at a shop to diagnose and fix issues. High tech engine, high tech issues. With the 347, you can do almost anything maintenance wise your self, easier to update, add a different cam, heads, fuel injection, etc.

Tom W.