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snorkel on a 350 chev on gas
Posted: Mon Mar 29, 2010 4:35 pm
by lukemcdon
hello i am looking for a snorkel kit or snorkel designs for my 350 chev on gas .
Posted: Tue Mar 30, 2010 11:40 am
by hurricane
what car?
what type of gas steup?
with out knowing this i find it hard for some one to help you.
dan.
Posted: Tue Mar 30, 2010 2:23 pm
by Struth
I would recommend a 4" tube snorkel, anything smaller will affect the engines performance.
Cheers
Posted: Tue Mar 30, 2010 6:50 pm
by 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.
![Image](http://i296.photobucket.com/albums/mm175/sprungupcruiser/007-8.jpg)
4'' snorkel
![Image](http://i296.photobucket.com/albums/mm175/sprungupcruiser/010-3.jpg)
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.
![Image](http://i296.photobucket.com/albums/mm175/sprungupcruiser/011-3.jpg)
I had to modify the box intakes to suit the pipes.
![Image](http://i296.photobucket.com/albums/mm175/sprungupcruiser/009-6.jpg)
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.
Posted: Tue Mar 30, 2010 7:11 pm
by lukemcdon
thanks its on a 1983 fj60 landcruiser. the gas inlet is on top of the air filter.