Alright, let's hear your opinion. As you know when installing Ford EEC IV EFI systems in our mavs there really isn't much room. The upper manifold makes it difficult to work on the engine and the shock tower braces have to go! So, what if I was to use the Comp Cams Power Box instead? http://www.compcams.com/catalog/331.html My only real fear is killing the bottom end. I have a GT40 340 horse crate motor with the E303 cam and X303 heads. It would certainly make maintenance a great deal easier.
I think it is a good idea. I know runner length affects things on EFI, but I don't think it is quite as accute as when dealing with a carb. I could be wrong... I always thought it would be interesting to use the bottom of a tunnel ram, to get a little longer runner, then fab a box to bolt in place of the top. It would only need to be a few inches tall, so you would still keep hood clearance (barely). I am getting OT... I think you should try it. It's not like you are using a really aggressive lower... that should help too. If you don't like it, think about how you are being kind to your unibody, or eBay the part. Also, Mavs are relatively light cars, so that helps too.
411, good point about the weight issue and lower intake. Also, on the street a little less low end torque means less wheel spin from a stop resulting in a faster start instead of going up in smoke. However, longer runners build more low end velocity which is good for the bottom end! But, I can use the stock shock tower braces and the taller FRPP valve covers. But.....see the problem? The pros and cons don't really point in one direction.
Thats one thing I hate about Fords FI, the upper manifold. As much as I dislike chevy, their TPI set up is way more appealing. I wonder if it could be adapted??
Mavaholic, interesting proposition! I agree the GM TPI is a better design with regard to working on the engine!!
I tried the Comp Cams Power Box and I didn't much care for it...I felt it really did kill the bottom end, although that was just my seat-of-the-pants estimate. I tried it simply for the reason that it would fit fine under the cross braces, and it does. It also doesn't have a provision for an EGR, although that may not matter to you. For a pure racing application it may be fine. I ended up going with first an Edelbrock Performer and then a polished Performer replica and have been pretty happy, although I still don't have a cross brace solution in place and worry that the shock towers are slowly bending towards each other...
thanks mavmark. As much as I would like to stick with the boxed upper so the braces would fit I think it will kill the bottom end too much!
The best for maintenance would be the Mass-Flow setup but its not cheap, or you could do the spyder intake ,but either one would probably not be good for low end. Soon I'm going to see if I can fit a SN95 Roush 3 piece intake under the hood, so far it looks like the intake will fit but the inbuilt air cleaner will not with out removing the braces, its always something..
