[harry k]

Originally Posted by 69FIREBIRD76MM

very simple test on how to gain some street horsepower, no need to get into apples to apples thingy here...I am pretty sure q-jet will have fare better on that stock iron intake.
many guys do this kind of adaptations and I am pretty sure they are clueless of the HP losses...Good post Mr. Harry.....

"far better & key word here stock UNMODIFIED iron intake"

Originally Posted by Ventura455

Here is something to think about. The stock steel intake weighs 42lbs while the performer RPM weighs 15. You would need to make 27 more hp out of the steel manifold just to compensate for the extra weight.

lets remind here the audience here one more time aproximate 50lbs in the front end of the vehicle has its benifts of using stock cast iron intake manifolds that they cheer for

Originally Posted by Firebob

Well through all the back and forth on this subject it's a bit confusing for me so I'll ask a more specific question.
If I wanted to install a Holley DP on a performer intake, what type of spacer or adapter should work best? Or should one or the other be used at all?
At any rate I am glad for the posted result of the original test. Every little bit of information helps.

here is what you need a sealing plate as i have it installed under the carb in the previous pic.
[IMG][/IMG]
http://www.summitracing.com/parts/edl-2732/overview/