Engine Choice Considerations

[SCFFR]

Getting close to the point in my project where I need to start looking at engine choces. Trying to avoid the usual questions on “how much horsepower” do I need and more concerned about fitment. Have pretty much narrowed my engine choice to a Ford 351W design but do have a few specific questions.

I have the smooth hood on my MkIV roadster and would like to use it without the scoop to maintain that street-version look.. What precautions do I have to take to ensure that I will have enough hood clearance? Hopefully a low rise manifold and carb will clear without too much problems.

I know some motor mounts are taller than others. Which mounts should I use to keep the engine low in the chassis?

All of the Ford crate motors offer either front T or rear sump oil pans. Is one preferred over the other? It appears that most choose the front sump pan but on some engines it is almost $800 more.

A local engine builder offers a 427 based on a production 351W block that is a good price at $5,700 but don’t think it is a Boss block. I’m thinking this configuration is pushing the limits on a stock 351W block. What’s your opinion?

Many thanks in advance for your input and feedback.

[Jeff Kleiner]

I know some motor mounts are taller than others. Which mounts should I use to keep the engine low in the chassis?

Energy Suspension polyurethane and OEM convertible mounts set the engine lower than Prothanes or OEM hardtop versions.


A local engine builder offers a 427 based on a production 351W block that is a good price at $5,700 but don’t think it is a Boss block. I’m thinking this configuration is pushing the limits on a stock 351W block. What’s your opinion?

Many engine builders share that opinion.

Good luck,
Jeff

[Bob Cowan]

All of the Ford crate motors offer either front T or rear sump oil pans. Is one preferred over the other? It appears that most choose the front sump pan but on some engines it is almost $800 more.

A local engine builder offers a 427 based on a production 351W block that is a good price at $5,700 but don’t think it is a Boss block. I’m thinking this configuration is pushing the limits on a stock 351W block. What’s your opinion?

Many thanks in advance for your input and feedback.

Either pan will work. I prefer the front sump pan, so you only have one drain plug. I also like the fact that all of the oil gets used and circulated, without a "dead" sump in the front. That probably doesn't really matter, but it makes me feel good.

You can build a reliable 427 street engine in a stock block. It is pushing the limits of a stock block. I know, I'v done it. BUT, if you ever race it, it won't survive. 427 is kind of a magic number for these cars. If that's what you want, don't be afraid to do it. Just be aware of the limitations.

[SCFFR]

Jeff and Bob - thanks for the info.

Also looking at the Ford 392 crate engine with 475 hp. Includes MSD distributor, flywheel, intake manifold and about $1,500 less than 427 but Bob you are right, "427" has that special ring to it.