Teach me the n/a 4v cobra intake.

[91CoupeMike]

I'm not building one, I just want to gain some general knowledge on the subject.

I've always thought with that motor the thing to do would be:

Delete the IMRC plates
Cut the intake runners down
And put a 4.30-4.56 gear on it.

But, im interested to see what you guys think.


Stock


Cut


Cut with box

5.0 Cammer intake <3


For comparison the tfs r intake

[SVT Lurch]

I'm not building one, I just want to gain some general knowledge on the subject.

I've always thought with that motor the thing to do would be:

Delete the IMRC plates
20+ PSI (8-10 if stock internals)
And leave stock gears on it.

But, im interested to see what you guys think.

You do know you can take screen shots rather than taking a picture of the monitor, right?

[91CoupeMike]

You do know you can take screen shots rather than taking a picture of the monitor, right?

Yeah, but I took those at a friends house and just posted here.

[Cobraman]

Gear the shit out of it. 4.56's wreck shit from 0-100.

[SVT Lurch]

Gear the shit out of it. 4.56's wreck shit from 0-118.

Fixed.

[Cobraman]

[/b]
Fixed.

Oh hell yeah. You should drive my cobra to see what yours is missing.

[SVT Lurch]

Oh hell yeah. You should drive my cobra to see what yours is missing.

I know what's missing, I've driven my buddy's 4.10 geared 96. But if I do gears I'll also want to do 31 spline axles and differential. A $300 gear change just turned into a $1200 rear end. I can't justify that much money on a car that is potentially for sale at any time.

[Cobraman]

I know what's missing, I've driven my buddy's 4.10 geared 96. But if I do gears I'll also want to do 31 spline axles and differential. A $300 gear change just turned into a $1200 rear end. I can't justify that much money on a car that is potentially for sale at any time.

4.10 is a womens gear. Lol.

[91CoupeMike]

I'm talking a n/a or nitrous build.

Why not boost the cut runners?

[SVT Lurch]

4.10 is a womens gear. Lol.

Haha! In his defense they were in the car when he bought it. And in the original owner's (WA 2 FST) defense when the gears were originally put in the car 4.56s (even 4.30s) were not available from FRPP.

I'm talking a n/a or nitrous build.

Why not boost the cut runners?

Never heard of doing so, but seems pointless, those intakes flow very well.

[91CoupeMike]

Haha! In his defense they were in the car when he bought it. And in the original owner's (WA 2 FST) defense when the gears were originally put in the car 4.56s (even 4.30s) were not available from FRPP.

Never heard of doing so, but seems pointless, those intakes flow very well.

Cutting the runners would increase the rpm band, no?

[32vfromhell]

4.10 is a womens gear. Lol.

I would be more than happy to run you with my n/a cobra with my women's gear

[SVT Lurch]

Cutting the runners would increase the rpm band, no?

My understanding is shorter runners give you more torque lower in the RPM. These motors/intakes were built for high RPM power so if you cut the runners for more midrange power I would assume it would cost you a lot more in the high range than you would gain in the low-mid range.

Are you wanting to increase how high the motor revs or the powerband?

[91CoupeMike]

My understanding is shorter runners give you more torque lower in the RPM. These motors/intakes were built for high RPM power so if you cut the runners for more midrange power I would assume it would cost you a lot more in the high range than you would gain in the low-mid range.

Are you wanting to increase how high the motor revs or the powerband?

If shortening the runners increases low end torque, then why do truck intake manifolds have such long runners?

The BMW m5 intake runners are long too, and that's a 8000rpm motor.

So that being said, I'm confused on how it all works I guess.

I'm not wanting to do anything I'm just wondering why, and why not.

[80coupe]

4.10 is a womens gear. Lol.

i have 4.10 we can see if there really women gears?