FAst 92mm on a 98 Z28?

[BJDahlke]

Why wont a 92mm fast intake and TB fit on a 98 z28? I'm new to the LS thing and could someone help me out with this. Thanks

[shady milkman]

it does........

[shady milkman]

if your refering to the egr/air set up..the big hose going to the top of the intake..that can be blocked and it will throw a code unless you tune it out. i also believe you will need the ls6 coolant pipes also for clearance

[Gundlach9]

I'm not entirely sure what the problem with the fit is in your application, but the FAST 92 is advertised as a bolt-on for direct replacement in LS1/6 style intake manifolds. Minus the new intake you're trying to install, is the rest of your setup stock?

[BJDahlke]

I have ported heads, the 243 castings.

[shady milkman]

243s...i am horrible with casting numbers..are those the ls6 or ls2 ? or 5.3?

[BJDahlke]

I believe they would be 2001+ Z06 heads

[shady milkman]

well they will still fit then.

[Mr. Luos]

The FAST 90/92 will fit.

It will not clear the stock coolant lines, or the stock valley cover bolts though.
FAST (Comp Cams) should send a set of the lower clearance valley cover bolts with the intake.

And as mentioned...the EGR fitting will not fit.

[BJDahlke]

So just remove the egr stuff?

[Mr. Luos]

So just remove the egr stuff?

Pretty much.


Also, your stock throttle body won't fit without an adaptor.