I jus yanked the plenum off n got some siamese runners and was wonder if i should just cut the gaskets and siamese the plenum openings.

Matt
Stock Firechicken

 

Well that would be what most people do in your situation

 

YAP


or get a TPiS big mouth gasket and gasket match to that

but thats more or less for the opposite side.

 

if you don't siamese the plenum, you'll get virtually no gains from the SLP runners.

MR Gasket sells a TPI gasket set with the larger diameter opening. If you want, I can get the part number off my package tonight.

 

If you have it laying around Jim, i'd appreciate it if you'd post it. I need to order some stuff from summit tonight and could use some bigger opening gaskets, rather then having to worry about making a template to match future gaskets too

 

I believe it's the MRG-146 kit. This is called the upper runner kit, but it's got everything you need to replace the runners.