Intake manifold for a LS1 ..

[BR3W CITY]

Originally Posted by ACII

i am still fighting with the decision :-)

as already mentioned i have to do some modifications on the intake...during this procedure i also can weld on some stiffener ...

i am thinking to build my own intake.....are there any flanges on the market available ?

thanks
achim

You can buy intake manifold flanges from a couple places, but you will pay a premium (thick stock, laser straight). Your other option would be to have a set cut for you, then take them to a machine shop to be decked. LS engines use and O-ring seal on the intake manifold, but there are "Traditional" gasket alternatives.