I eventually want to build a stroked out 460 like 598ci using either a A460 block or ultra eliminator block or something of the sort. I know basically just because of the displacement, it would be easy to make power. However, i think it would be really cool to boost this engine as well. I dont know too much about boosting engines, so i would definitely have to read and talk to people on this. But my idea would be to build a NA stroked out 460 block with mildly dished pistons or dished, and once that got felt "slow/boring" (If it ever did), boost the engine. Like i said, I dont know much about boosted applications. I know you would want dished pistons to run more boost (?) but would you want a cam specifically for boost (if that even is such a thing)

A460 Block or similar
Scat forged rotating assembly.
ARP bolts throughout
Lunati Full Roller
A460 heads (Worked over if needed)
Tunnel ram Intake
Holley Sniper EFI (for ease of tuning and A/F ratios for boosted apps)


This would obviously be a pricey build even just for a NA setup, so this is all in my head and more of one of those dream builds or something that would take a few years or serious budgeting to accomplish.

Questions:
Most people go directly to boost with their engine build so its built with dished pistons. How would dished pistons (so low comp ratio) affect NA build before adding boost(obviously loss of power). I wouldn't think itd feel sluggish even with low comp.
Are cams designed for boost or NA or will a high flowing cam be fine for boost or NA. (easy to change out regaurdless)

What are you thoughts/opinions. Any advice?

 

Email The Mad Porter,he can advice you on what to do and not to do.
"Parkland Performance Auto Machine" (253)-988-6648
10610 Golden Given road east
Suite #4
Tacoma, WA 98445
ph: 253-988-6648
fax: 509-352-4743
scott@ParklandAutoMachine.com

 

man i cant wait to see it in action

 

I don't know much, so beware. A low compression motor with an aggressive cam can be a real dog due to the overlap and long duration of such cams. The combination leads to low cylinder pressure and resultant low power. Once you apply boost, your power is back plus whatever your boost gives you.

There are "blower cams" for some engines, so if you go looking for cams you can usually find the specs on those cams vs. the one you have selected.

"Modern" designs like the Eco Boost and other turbo motors use high compression plus boost. Nice to be able to do that as you have the best of both worlds. Without highly developed engine management, you will usually just end up with melted pistons and blown gaskets trying this on an old school motor.

While there is no such thing as "too much power", you can have too much for whatever platform you are going to install this thing in. What use is 800 HP with a chassis only capable of handling 200 HP? (i.e. most pickups....) And don't forget your transmission. I am always amused by the $10,000 motor guy who wants to use a $50 transmission. A mountain motor build like you describe will make more power than you can use on the street short of a lot of custom suspension and other chassis work.

Here is a 460 cook book with some serving suggestions. Remember "serving suggestions" and there are many variations on the 460 theme:

https://www.460ford.com/forum/40-eng...1-24-09-a.html

 

More on cams:
https://www.enginelabs.com/engine-te...-howards-cams/

 

Here's a sort of comparison for ya. I have a Firehawk that's B&S to 383, cnc'd Lt4 heads/ intake with a pretty aggressive cam. This car is dyno tuned for over 400hp with dish pistons but no blower, is definitely no slouch & anything but boring.
I say plan it & do it.. but like it was said earlier, dont forget the rest of the vehicle & it would be a blast.

 

Thanks for the insight all. I know most engines with low CR and big duration would be slouches but something with this many cubes im not sure. Even if it is making 1 hp per cube thats still 600hp.

You did get me on the whole trans, rear gears, etc issue. Never even thought of that! Like i said its my dream engine build. A lot of dreams dont come true so we will see. I know i dont have the money for it now but with some saving and good budgeting who knows. My real idea is a dragster 30s 3 window ford coupe with this engine in it. But figured i could build the engine, instal in my pickup, while im completely building the coupe, once finished with the coupe, build a mild 7.3 for my truck and use my truck to haul the coupe to dragstrips. I think thatd be awesome.

 

As much as that engine will cost to build, so will the other components of the build to handle that power. Those type of motors aren't typically made for as many miles as one would want in say a daily driver. So if you are saving up to build this motor, then once you have it built, you need to start saving up for drivetrain and will now have a monster fuel bill to boot. I had a fairly stock 460 with an RV cam that I could get to pop the front end of the ground with goosing the pedal.... The frame didn't like it very much though, but that's another story. Rather than throwing $15,000 into a motor, why not put $5000 into it with solid components and have a really fun and streetable truck. It's your money, don't let me spend it for you, but that's probably going to be more enjoyable for the long run.

 

Go to www.460ford.com and ask there. There are several serious 385 builders there that can help you and point you in the right direction.

Things you better know: Your realistic goal, budget, and application. Engines are built differently for boats, monster trucks, drag cars, rock crawlers, etc.