i have an olds 455 and i am changing the intake from the stock to the edlebrock 2151 alum intake.

When i removed the stock it had the valley pan attached- i removed it and after reading the forum i decided that a new valley pan would not be the best option for the New intake... I bought the recommended Mr Gasket 404 but it doesnt seem to match as 2 of the center ports are missing. Do i just cut the gasket to fit?? or am i missing something? ANY HELP - PLEASE ADVISE

 

http://static.summitracing.com/globa...s/edl-2151.pdf

 

you can use them just like they are they deleted the heat riser runners most aftermarket intakes dont have these and also keeps fuel cooler under carb for more power no prob on my 455 with a Holley strip dominator intake after 4 yrs

 

are you saying i dont need to plug those holes and i can leave the gasket the way it is?? Will i lose HP??

I gotta tell you im having a hell of a time shaving down the crossover blocks that came with the manifold. forgive me if i seem ignorant - but there has to be an easier way!!