Weiand intake ID and suggestions.

[kelseydum]

I picked this up at a swap meet this weekend. I'm wanting to upgrade a little but still keep it street ready. Right now it's a stock 350 with the exception of a cam upgrade... 327/375hp hydraulic cam. Stock four barrel cast intake and quadrajet carb. It looks like the Weiand 7546 X-CELerator Intake Manifold but what is with the double bolt holes?..... and is this a decent intake....and should I just run a 500-600 cfm carb (Edelbrock, Holley etc...) with it?

Also, while I have the intake off should I upgrade the rocker arms or anything?

What do you think?

 

[Brooks W]

High RPM intake

That intake is strictly for top end. Might have off idle and mid range issues. That said I installed that same manifold on a SB and it ran just fine. When you have a large open plenum the carb sees a weeker signal at lower engine speeds. Probably want the 600 or 650 with that cam. Rockers should be fine. Did we upgrade our valve springs?

 

[42chevy]

I have one on a 327 with a Edelbrock 650 and it actually has good throttle response down low and runs well.