they make a 3.75 bore kit also.

 

haha yeh the 5.4's lately have been getting replaced because of problems with the cam phasers and other plagues. 4.6 3.55 bore 3.52 stroke. the 5.4 is a stroked version of the 4.6 but with a taller deck same heads intake style everything! by definition the 5.4 is a stroker 4.6 thus making the 6.8L a stroked motor.

 

I believe Sean Hyland and Neal.

 

If you can take the 5.4 crank and put it in a 4.6 block then that would be a stroked 4.6. Good luck with that BTW...... Regardless of the ensuing argument no one makes a stroked crank for the 6.8. Comp cams, though, does offer cam cores for the 6.8. Have them ground to your spec or use the 5.4 specs.


JMC

 

so what you are saying paul is that the 5.4 is better than a 4.6 because it's just a stroker 4.6 and therefore will run better and have more power?????

JMC several companies grind custom cams and a 6.8 with a cam and a supercharger (since forged lightning rods and low compression pistons will interchange) that would make one sick running F-150

 

Sounds like a cool idea. I second trying Sean Hyland. They could probably steer you in the right direction.

Keep us informed.

 

Besides the 5.4 being a stroker which is laughable, isn't the rest of this statement common knowledge?

 

nope

 

the stroker kits for the 4.6 uses a different crank as well. to increase the stroke length to 3.75" and a 5.4 crank will fit in a 4.6 ud just have to get some really short rods.

 

I wouldn't run a 5.4 crank in a 4.6 block. While the parts may very well fit and the piston not hit the counter weights the side loading on the piston would be extreme. Why didn't Ford just use a shorter rod in a 4.6 block to make a 5.4?

JMC

 

Problems due to running too short a rod are cut and pasted below. Excessively high piston speed at the top and bottom of the stroke, less power, side loading on the piston, etc...It does not sound like a good fit for any application, much less a high performance use. Keep in mind greatly exceeding the stock stroke and/or reducing the rod length of any motor could cause these sorts of problems.

"Short Rods. -Cons- Cause an increase in piston speed which at very high rpm will out run the flame front causing a decrease in total cylinder pressure 'Brake Mean Effective Pressure'. Due to the reduced dwell time of the piston at TDC the piston will descend at a faster rate with a reduction in cylinder pressure and temperature as compared to the long rod equipped engine. This will encourage reduced total combustion and an increase in hydrocarbon emissions.

Rod length will modify an engines torque curve considering the displacement and configuration; the rod angle must not encourage excessive friction at cylinder wall and piston skirts. Connecting rod angle is a product of stroke and rod length, greater angles can occur by installing a shorter rod or by increasing the stroke. Reductions in angle will occur with a longer rod or a reduced stroke and stroke is not affected by a change in length of the connecting rod."

 

good find

 

Pete, I don't profess to know all about a V10 as I've never had one for a project, personally or professionally, but my nephew was on the developement team for the V10. His comments are that the V10 Triton is already a HIGH (he repeated this many times) stressed engine. Any performance gains that you might get will only shorten engine life- by a lot. He doesn't recommend any stroker kit or supercharger. If you need more power for pulling, get a different truck built for the application. If you are looking for a hot rod, any V10 architecture is a poor choice. Ever notice that the GM V10 didn't hit the streets? And where is the Dodge V10? Better choices out there. Might also look at a 385 series engine. You can build some serious HP from one of those. I had one making 2800HP in a squirt boat.

 

It is actually a reline kit, new cylinder liners are pressed in after the old bores are hone out

 

HI!... Wrong once again.............

So with your thinking a 351-W is a stroked 302? They use the same heads, water pump, timing chain cover, they have the same bore and same style intake manifold.
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