intake manifolds

[Got2bneo]

what is the best 4.0 V6 aftermarket intake manifold out there?

 

[IZwack]

I don't think anyone makes an aftermarket intake manifold for both the 4.0 OHV or the 4.0 SOHC. I think all of them are "custom" (as much as I hate to use the term) fabricated. Intake manifolds and plenums are a little more sensitive than exhausts (unless the engine is force induced)
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[Elessar65]

You can get heads from www.supersixmotorsports.com, and they have upper and lower manifolds for the OHV. Nothing fancy though its just a stock one thats been ported and polished. Just take yours to a machine shop and have them do the same thing.

 

[Got2bneo]

thats what i was thinking. i didnt want to make it forced induction unless i had to. i just needed some more torque and hp and i figured adding more air would help the process.

 

[Elessar65]

If you get your heads ported and polished and get a valve job you will be able to make more power and torque.

 

[Got2bneo]

i can get all that done at a machine shop cant i? i mean getting ported and all. i can do the valve job myself.

 

[Elessar65]

yeah, thats what I was saying. You can buy their heads, but since they are just ported and polished stock ones, you are better off just taking yours to a machine shop.

 

[Got2bneo]

cool cool. how much power increase would it give me?

 

[Elessar65]

depends on a lot of different things. I think the stage 2+ heads from SuperSix are good for like 50 hp and 80 trq, dyno proven. Those aren't peak gains, but I know it helps the low end torque a lot, and thats what these v6s need.

 

[IZwack]

depends on a lot of different things. I think the stage 2+ heads from SuperSix are good for like 50 hp and 80 trq, dyno proven. Those aren't peak gains, but I know it helps the low end torque a lot, and thats what these v6s need.

Isnt that with the 4.3 conversion?

 

[Elessar65]

it says under the sohc tech section i think, that its on a stock 05 mustang v6, with no tune. I know the engine, or most of it, is the same as an X. I think an explorer should get similar numbers.

 

[Got2bneo]

good. hopefully more grunt at the top end.

 

[Elessar65]

what you really want is bottom end, not top. Unless you are racing. Or driving around over 4k rpm all the time for some reason.

 

[Got2bneo]

no. its i just dont like the throttle response i like on the top end speeds. around 70ish mph. i have to shift down too much.

 

[Elessar65]

it has nothing to do with speed, its rpms. If you have more bottom end you won't have to down shift as often.

 

[IZwack]

I think your just asking for more than what the engine has to offer. Its a V6, not a torquey V8. And at 70 mph, why would you need more? You're already above most speed limits.
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[Got2bneo]

I dont go speed limits. come on. lmao. And its not that it doesnt have what i want. I am a man, always putting more power to what i've got. Power is power. I will see what i can pull out of.