cobra intake install problems

[rog50]

just installed new cobra intake on 89 306,edelbrock perf. heads,2nd time install, used 1250 felpro gasket and rtv all around very good, getting high pitch noise like a whistle noise, spray wd40 all around and nothing happens.i have had it with this shit. i need some in put guys,thanks

[qkjuicedpony]

I did a new cobra intake install and the lower was actually sucking air through the casting at the front.had to swap it for another but it was a bitch

[coupe]

Throttlebody is probably whistling. Some do, some don't

[banditmwp]

Throttlebody is probably whistling. Some do, some don't

:agree:

What brand throttle body are you using?

[QWKSNKE]

I 2nd the t/body question. If it is a BBK or a professional products, than that is your problem

[rog50]

it is a75mm edelbrock/bbk

[rog50]

but the whistle sounds like it in the big part of the intake

[slvrbullit]

Make sure the PCV did not pop out after you installed the intake. I have had that happen before nad it whistled like a tea kettle.

[oo-gonzo]

I installed a new intake with a professional products TB and had a whistle, but it was not the TB. It was the PVC valve. It is real easy to pop these out when putting a new intake on. Also, check your headers.

[03slobra]

i've had a edelbrock 70 and 75mm t/b both whistled like that. they say drill 1/4 in hole in the butterfly and it should fix it.

[oo-gonzo]

I have heard that drilling a hole in the butterfly helps, also. Never tried it though!

[rj95svt]

Isn't a 1/4 in hole a little big though

[QWKSNKE]

Isn't a 1/4 in hole a little big though

it is in my opinion

[Italian LX]

Isn't a 1/4 in hole a little big though
Naw, it's just called cruise control. :D

[rj95svt]

Lol!!