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Possible?

1.8K views 32 replies 17 participants last post by  MikeJones  
#1 ·
Possible to build a N/A 2v thats puts 450-600rwhp to the wheels?
 
#4 ·
with a 5.4L 2V it might be possible. a 4.6 i highly doubt it. no replacement for displacement when it comes to NA motors.
 
#5 ·
One can make well over 400 with some serious camage, big displacement, high compression and high octane. You just found out why boost is soo popular :yes

Jazzer :)
 
#7 ·
Possible to break 450? Yes. Cheap? Hell no. Streetable? Definitely no.

You probably could with a bored block, high comp pistons, TF heads, aftermarket intake, carb'd, E85, massive cams and spun to high heaven.

If you're thinking high 500's to 600...I think not. There's guys out there in that range, but with motors that have nearly twice the displacement. You'd be hard pressed to wring that much power out of just 281 CI NA.
 
#8 ·
If u stroke and poke a 5.4, and ported tfs heads, nasty cams, carb, intake, and exhaust with no lower than a 13.1:1 cr u might see 500
 
#17 ·
Vaughn Gittin is making 749hp naturally aspirated. However, he's got a seriously worked over 4V 5.4 that's displacing 6 liters and spinning 8000rpm
 
#20 ·
This reminds me of a thread I saw on some Honda forum. Dude wanted 400 or so naturally aspirated horsepower out of his 1.6 or so liter B16 or whatever it was, and wanted it to be completely streetable.

Why not build a forged engine, throw on some TFS heads, and run something like a V-2 SQ, stock or real mild blower cams, like MHS stage 1s, and have a sleeper type car? Worlds more reliable and streetable than spinning your engine to 8-9K just to make some decent power N/A. Probably would be fun when you surprise a lot of people too.

But, your car, do whatever would make you happy.
 
#22 ·
Makes sense. Yeah it would be neat. Ferrari manages 562 horsepower out of their slightly smaller 4.5 (274 cubic inches) but that's a whole different ball game. 12.5:1 compression, 9,000 RPM, direct injection, a fancy four mode variable-resonance intake manifold, come from the factory with a windage tray, etc etc etc.
 
#24 ·
500 is gonna be pretty tough with a 2v 281. It would definitely have to be bored, storked really high cr, race gas etc. Problem is, you just dont have the displacement. Boost is going to be your best bet if you want that number with your motor. Or just buy a bigger motor.

I'm building my 281. 11.1:1 cr, cams and ported heads + all bolt ons minus LT's and UDP's...stock displacement. Shooting for 350-400 range. Thats probably as good as it gets. (Keeping it streetable).

Goodluck with your build though man!
 
#30 ·
This is off topic I know but I couldn't resist. I have a friend who is 6.6-6.7" and probably weights maybe 300 pounds who drives a modern VW Beetle. I don't know but I suspect he had the seat modified.
 
#31 ·
The MMR boss block would help dramatically in making power by reducing valve shrouding and increasing displacement at the same time.

I think the biggest factor would be getting the powerband as high up in RPM as possible with HP calculated directly from RPM.
 
#33 ·
Race Gas
Real street race type cams
9500rpm shift points
Carb
Ported to hell and back trickflows or custom made heads.
More cubes the better

There's N/A 2v running 9's.. meaning hp isn't everything.