[Cliff R]

"a test such as this proves one thing for sure. Parts that are miss matched and not designed to work with each other will be less efficient."

+3 on that statement, lunch is on me J.C. if you ever get to Mount Vernon Ohio or we run into each other at a track someplace!

Lots of good information on this thread, even with the "negative" attitude and comments overshadowing it by the OP. I never once had a problem with how the test was done, why it was done, or that it was done for any other reason than to optimize what the customer had and was able to supply within his budget.

I saw some SERIOUS flaws in some of the parts used which would have a significant negative impact on the test results, so ran my own thread to point these out. This was done solely to educate folks about these things, not to criticize the OP, his work, methods, or anything else of that sort. Folks, I spend more time at optimizing "stock" parts than most, as we are DIRECTY involved with some of the fastest Pontiac powered cars out there using them. I knew that a 1/2" spacer/adapter is REQUIRED to clear the throttle plates with the AFB clone carburetors, in addition to a pretty serious miss-match between the parts once it's in place.

Not sure how the thread got off course to cost of "modified" iron intakes, which is pretty irrelevant when you consider the cost of going any other direction as it all costs pretty big money. As far as "modified" iron intakes, I got mine for $25, cost $12 for a Dewalt saws-all blade, one carbide cutter and half a dozen sanding rolls plus 4 hours of my time. I spend a few more hours with it on another session to set it up to take square flange carbs without an adapter. So I may be up to 7-8 hours total in the deal. The end result, made 7 MORE HP than an Edelbrock RPM on a back to back dyno test against an RPM intake, and that testing was done on a 428 engine with KRE heads and custom HR camshaft making right at 500hp.

Why is that statement important and it needs to be repeated.....because an RPM intake costs nearly $200, plus all the additional time, components (WFO base, Dude Scoop, Blocker air cleaner assembly , etc), and effort to get it under the hood of many Pontiac Shaker and Ram Air set-ups. The RPM intake also raises up the carb to a point where the throttle cable becomes too short and some cobbling needs to be done there as well on many set-ups.

I always thought this hobby was about "hot-rodding", and modifying parts to fit our needs. For those with a little ambition, a saws-all and an air grinder, you can have a really nice intake for less than $100. For those with even greater capabilities, a small amount of nickel rod can be added to it, so you can run your favorite Holley carb at the flange without an adapter........Cliff