Gareth

Hi all,

Not going to get enough air with a KN and cut lid standard system :-D what air filters / induction systems are you guys using for similar HP?

Thanks in advance

RWDsmoke

The 85-89 air intake housings were very restrictive because of the bottle neck over the radiator. Even my "little" 350 with a ZZ430 clone was running out of air. After converting to MAP and eliminating the mass air flow sensor my MAP KPa was dropping into the 80's at under 5k rpm's. I found nothing available in the aftermarket that I liked so I built my own. It has a 4" tube to the throttle body. Now my MAP is still 98 KPa at 6200 rpm's using the stock filter. It could be built using a larger filter.

vader86

I'm making similar power, just using the SLP intake, still restricted through the MAF and rubber bellows.

You're going to have to design your own better way I think.

tequilaboy

A 3.5" or 4" MAF with appropriate filter and couplers would be sufficient. Oval tubing and vertical bends or pie cuts would help with clearance.

Maybe add a y-coupler and run two filters or try a filter like this one (for example): https://www.bbkperformance.com/washa...1733-1738.html

Incorvettei

560 horses in an 88 C4, my hat is off to you! That is a ton of power

Mixednuttz

You're going to be stuck making your own custom intake. I believe Joby built one that has a cone style filter in front of the radiator.
I just use cone style filters in front of the turbos on the 85.

Krusty84

OP, do you have a photo of your under hood setup that you could share?

383vett

Different radiator on my C4 bracket car. 4" tube going to a C5 intake elbow with a cone filter in front of the radiator.

Krusty84

^^^^ Mine is setup similarly in my 84 LS swapped car. Later slanted back rad/fan setup with C6 LS3 Airaid cold air kit and 4" air tube, LS3 card style MAF and a hole cut into the shroud for the filter.





I would like to see what the OP is dealing with under his hood. I looked through some of his previous posts and it looks like it may be a custom setup.

GREGGPENN

I have one of the ultra-rare TPIS air boxes for L98s. (Might be called "Air Force One"?) I wonder how much HP they are supposed to support?

Obvious difference in CSA. Sits in factory location. Optical illusion in pic. Fiberglass FLOOR is what you see thru the opening.





Only found this pic on my PC...More can be seen here.

yakmastermax

How much benefit is their to swapping to the angle radiator and fan setup on an early car?
What all is needed to do the swap and what all needs to be done? There are a lot more intake options with the angled radiator and fan setup.