Repzard

Is the B Head intake better ? if it is im guessing its better for top end power ?

kinda new to the Cobra world so now I have a GT and Cobra and I know the 97 Cobra just revs and keeps reving why I asked the question

SVTeeshirt

B heads/intakes as a combo actually make more power down low, (not by a whole lot) while C heads make more power higher in the RPM range. Stock for stock.

The C heads > B heads when ported by a good bit, imo.

The problem with using 03/04 heads is there is only a lower intake from the 03/04 cobra as the upper is replaced by the eaton blower.

So if you do the swap minus the blower you have to use a 99/01 cobra or 03/04 mach intake which despite what people say i belive are identical minus a cobra plaque. I'm not 100% but i think they are more N/A oriented, which may or may not be a bad thing. You could always go for the fr-500 intake (based off the 00 Cobra R intake) but it has a bit of a steep pricetag and are getting hard to find.

Basically it comes down to your overall goals, f/i or n/a, how high you want to rev and where you want your power. Me personally would rather rev higher with some C heads and throw a steep gear in the rear end. Why not if you're revving high? It'll get you to a usable powerband quickly.

my94pony

Idk if it's better I just like the looks of the 96-98 intake alotttt more than the 99/01 intake

SVTeeshirt

Lol, you do a lot of driving with the hood up?

I bought my cobra to drive the hell out of it, not to stare at whats under the hood.

.

Repzard

OH okay..I can see that point
It is cooler looking for sure over the 99-01

SVTeeshirt

you guys are silly lol.

crysalis_01

Finally took the wire brush to the manifold.





Next up. . . ordering heads.

SVTeeshirt

i sold some 01 heads brand new and complete for like $800 last year O.o.

But you prob want 03/04 heads.

Get rid of that egr valve if you can .

also



sold that too.

crysalis_01

Yeah I found a pair of '04 Aviator heads for $400 + s&h and the EGR will indeed be going.

crysalis_01

Well I should have my heads by the end of the month. And now I'm starting to think that since the 4.6 will be going though all this work I might as well as redo the rotating assembly while I'm at it.

This engine will be seeing some twinscrew boost eventually, and I'm looking to keep the stock compression ratio.

What brands of rods and pistons should I be looking at as far as the best quality. Should I stick with the same brand for both because I was thinking Manley rods and Diamond pistons. If there are others/"better" ones I should be looking at feel free to give me your input, advice, and/or personal experiences.

Thanks in advance.
(It's a little slow here, so I'm going to go ahead and ask in 4.6 main section too)