Air blowing??

[my72mach1]

I just finished installing a new intake on my 351C, edelbrock performer, and a new carb, also edelbrock perform. Got it to run today, but I hear air blowing from somewhere. It idles at about 900-1000, but hearing this air makes me think there is a problem somewhere. Any ideas? TIA.

Brian

 

[ron67fb]

Get a long rubber hose. One end goes against your ear, the other end you wave around the engine and pinpoint the noise.

Maybe it's the wind? Be more specific.

 

[my72mach1]

Here is a link to a quick video of the engine. Hopefully you can hear what I am talking about. Also, I tried to point out the throttle linkage, anyone know the easiest way to connect this? Modify the cable or is there a ball stud adapter available for the carb? Thanks again.

http://s214.photobucket.com/albums/cc104/bcholt23/?action=view&current=DSCN1705.flv

 

[my72mach1]

Update

Today I went out and cranked it up, car wouldn't stay running. Starts, then dies and sounds like it is starving for gas. If I hit the gas it will stay running, but as soon as I stop, it dies. I looked at the in line fule filter, there was some debris in it, thought it might just be clogged so I replaced it. Same thing, still dies. Now I am wondering if it is the ***e pump or could this be caused by a vacuum leak somewhere? Any thoughts? Thanks.

 

[Rusty67]

Maybe your intake didn't seal right and you have a vaccume leak. Get it running and spray carb cleaner around the sealing surfaces on the intake where it meets the block/heads and at the carb.

 

[BlwnGazkit]

The carb cleaner will stall the engine if you have a leak where it's sprayed.

It sounds like a vacuum leak to me, and the new symptoms describe a vacuum leak as well.

 

[my72mach1]

Thanks guys. I plan to get back to it this weekend and I'll let you know how it worked out. I think I have it narrowed to either clogged jets in the carb or a vacuum leak so I am going to check both.

Brian

 

[Gud T.B. Blown]

Do you have the correct intake for the heads? i.e, 2V heads with a 2V intake? A
4V intake on 2V heads will cause the problem described.

 

[my72mach1]

Interesting, I spoke to a guy at edelbrock and he said you can use their cleveland 4V intake on a 2V?

 

[BlwnGazkit]

Did you talk with a Tech or a Salesman?

 

[my72mach1]

Tech.

 

[Gud T.B. Blown]

Tech.

I talked to a guy in tech about a intake 351C manifold heat riser block-off that I saw in their online catalog for some clarification about application. He was adamant that the piece didn't exist for the Cleveland manifold and I must be looking at an intake for a Windsor instead. Well I called Summit and ordered the part using the part number from Edelbrock. The point of this is just because they are tech doesn't necessarily mean they are correct.
I don't know how an intake made for 2V heads can also fit 4V heads because the intake ports are so much larger. Now if the tech guy was thinkng of the aluminum Edelbrock 4V heads, then yes, a 2V intake will work because the intake ports of the aluminum Edelbrock 4v are similiar to the 2v cast iron heads.