7afe JDM vs USDM, specifications Options

[FallenHero]

JDM head has eight individual ports with the injector bungs cast into the head like a 4ag. The JDM head is subsiquently Much wider than the US 7a. As for the cam differences, I have them and have not measured them. They do, however, have different part numbers though.

I have all of these parts if anyone wants to buy.

[normality78]

yeah, mine has eight individual ports with the injector cast into the head

[FallenHero]

yup, that's the euro or "JDM" head. Either way it was not offered in the US. 8 ports should increase intake velocity and thus make power, but there is really no telling. I'm told the cams are what makes the power difference.

[Hanyo]

now the question is, will you still pass smog with the jdm head? hmmmm...

[FallenHero]

Yep, looks completely stock and all the EGR work can bolt right up... even if it's not functioning.

[normality78]

yeah, its in total stock base. GE head is going in. now still thinking wat else to do. 1 thing i notice, max torque was at 2800rpm / 110lb ft. should i swap to GE head, would the torque band be affected which most likely do

[FallenHero]

what are you asking?

[94ST2]

I think hes asking if he swaps on the ge head will he lose torque.

[Kwanza26]

I think hes asking if he swaps on the ge head will he lose torque.
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No... the torque curve will change and he might not make as much torque at 1500 rpms... but torque will most definately increase in the higher rpm range.

[normality78]

94ST2,
tks for the clarification.

Kwanza,
point noted.