what to do
11-25-2010, 06:13 PM
#11
5th Gear Member
Join Date: Jul 2006
Location: CT
Posts: 4,951
the 5.4 is just a stroked out 4.6. the 5.4 X valve motors make no more horsepower than their 4.6 counterparts, just more torque. if the 5.4 were to have a bigger bore, then it would be different. the 5.7 has a much larger bore than a 4.6 or 5.4 (again, both have the same bore). you cant compare apples to oranges. the 5.7 is beast, and the power it makes has nothing to do with it being a pushrod vers ohc. i would venture to say it would make the same amount of power if it were an OHC motor assuming cam profiles and such stayed the same.
You're saying you can't compare apples to oranges, but pushrod and OHC are apples and oranges. They're different, which is the entire purpose of discussing and debating which of the two is better and why. The only engine I can think of that has an exact OHV and OHC counterpart is the GM 3400, where they had the pushrod one that they put in everything, and then the OHC one that lasted for a few years that they'd put in Monte Carlo's and Acheiva's and ****. The OHC made more power in that case, but it was meant to, being the OHC version of that motor was the "performance" model where as the OHV they put in Lumina's, Buicks, Oldsmobiles, etc...
Last edited by Xemeth; 11-25-2010 at 06:18 PM.
