snorkel on a 350 chev on gas

[lukemcdon]

hello i am looking for a snorkel kit or snorkel designs for my 350 chev on gas .

[hurricane]

what car?
what type of gas steup?
with out knowing this i find it hard for some one to help you.

dan.

[Struth]

I would recommend a 4" tube snorkel, anything smaller will affect the engines performance.

Cheers

[sprungupcruiser]

This is a design a mate and I came up with as i couldn't find any pics of one. This is assuming you have a carbied 350 chev, this is on a 308, but the principle is the same. You may need a bigger airbox to suit the larger capacity, im not sure.

4'' snorkel

had a sheet metal place roll up a ring to sit over the gas diaphram, also had them cut a disc to the same diameter. I welded them together then put a 3 inch pipe off the side. The airbox is off a V6 VS commodore, but I believe the they are the same as the V8 airbox.

I had to modify the box intakes to suit the pipes.

I used a silicone reducer from 4'' to 3". As struth mentioned 3'' intake may reducer performance, I didn't notice any change in performance at all when running just the airbox with out the snorkel hooked up at all, however it did change the when I hooked up the 90 degree bends to connect the snorkel to the airbox. It has a bad flat spot when under very heavy acceleration, I tried fitting the a high flow filter but it has done little. I am hoping it has just messed with the air/fuel mix and can be tuned to rectifiy the problem.

[lukemcdon]

thanks its on a 1983 fj60 landcruiser. the gas inlet is on top of the air filter.