After you install some lower compression rods/pistons...as the only think who will hear is boom...11:1 compression and anything over 6 lbs of boost= well you know.....
After you install some lower compression rods/pistons...as the only think who will hear is boom...11:1 compression and anything over 6 lbs of boost= well you know.....
You're thinking of a pushrod single cam engine that was essentially designed in the early 60's.
This new 11:1 4V can run on 87 octane. That means it "acts" like it has 9.0:1 compression. That also means that this thing can be supercharged almost no differently than the previous 3V's. The internals are atleast as strong or possibly stronger than the 3V, so with the right tune, I don't see why it couldn't see roughly the same amount of boost.
the fact that it permits 87 octane is pure amazing to me with 11:1 CRIt can run on 87 octane but the computer pulls timing as there are hp numbers for 93/87 octane...not much of a difference but still....
And I don't think CR changes from 1960-2010..it's still the same..technology has advanced and there are more sensors that can pull timing/prevent the driver from hurting the engine....
If ford didnt think this motor could handle boost, why would they work with shelby (gt350) and put a blower on the car with low boost and warranty it? Its like 19cobra93 said if you have good oct and 6-7psi this motor will be happy. If you dont have the oct. the computer will pull timing, and change intake and exhaust to make sure you dont detonate. And basically decrease power to a safe level.
It's not simply timing. On a pushrod motor, you can pull all the timing you want, but if your try and run 87 octane on 11:1 compression, you're pistons will have a very short life.
On the new 5.0L, the piston squirters are a big part of why this motor can run on 87 octane, combine that with independent variable cam control, knock sensors, and some smart programming. All part of something any pushrod motor could even dream of.
So yeah, the way a motor reacts to compression has changed. With the pistons staying cool, and the cams working independently, there's a lot that can be done with high compression, pump gas, and boost.
If Ford had given us forged pistons and rods (real ones) in this motor with everything else the same, I think the potential for HP would be rediculous. Imagine this motor with 20+ lbs of boost and race gas. It would be somewhere way north of 1000 hp.
then the s/c companies have to tone the s/c down for the 5.0 to 5-6 lbs of boost and charge approx the same price....not a very good bang for the buck ratio, not that won't stop people from doing it...
right. not to mention the tune itself is probably super-safeSomething to consider, this new motor flows a lot of air, a lot more than the 3V. So even though it's only seeing 6 PSI, it doesn't mean the supercharger is hardly working. The same supercharger with the same pulley would probably make 5 or 6 more psi on a 3V as it would on the new 5.0L.
If Ford had given us forged pistons and rods (real ones) in this motor with everything else the same, I think the potential for HP would be rediculous. Imagine this motor with 20+ lbs of boost and race gas. It would be somewhere way north of 1000 hp.