Mod engine with more liters

[fairlane347]

Ok here is my question for mod engines with SOHC or DOHC. I know there are stroker kits out there that are 5.0 liters. What is the max liters a mod engine can make? Is a custom built 7.0 liter out of the question? Yes new heads and alot of engine work would be required, alot of cost too. I know the 351 can be made a 427 stroker. Is it viable to go from the 4.6 or 5.4 to 7.0 liters? I think this would be the ultimate Marauder with 7.0 liters naturally asperated. Might not be streetable but who cares.:lol:

[Paul T. Casey]

On the 4.6, the biggest I've seen commercially available is 5.4. Most builders won't do more than 5.3. Not sure what you can do with the 5.4.

[Power Surge]

You can go to I think a 5.3 with the 4.6, and the 5.4 can be taken to 370 inches (6.1L). That's the biggest you can go. There is not a lot of room to increase displacement on the mod motors, because A- you can only go .030 MAX with the blocks, and B- these motors already have long strokes. Even if you built a stroked 5.4, it's not a street motor, and will have to be rebuilt every year or so because of the excessive piston side wall wear from the short skirts and crazy stroke.

HOWEVER, the V-10 is a 6.8 out of the box, so that's much closer to your goal ;).

Or, you can just put a 428 in the car :D.

[fairlane347]

Thanks guys that helps, Yeah the 428 FE engine would be sweet. I wonder now how hard a 390, 428 FE style engine would fit in the 03 and up frames? That would be cool and just run a carburated engine.:D