This is topic edelbrock intake question in forum Tech Talk at Northern California Ford Owners  .


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Posted by sydewayzLX50 (Member # 10217) on :
 
i have a edelbrock performer 5.0 upper and lower intake now (i believe its part no. 3820?). my question is, do the performer 5.0 and the performer rpm2 use the same lower manifold or are they different. just wanted to know if they are so i just have to buy the upper. thanks cafords
 
Posted by Duncan Motors (Member # 7045) on :
 
i think i remember the lower bein the same
 
Posted by sydewayzLX50 (Member # 10217) on :
 
alrite cool thanks duncan, anyone else?
 
Posted by FivePTSlow (Member # 7682) on :
 
No, they are not the same lower. The RPM 2 is CNC port matched to the larger upper runners and is machined I believe .375" shorter otherwise it wouldn't fit under a stock hood.
 
Posted by Camara90 (Member # 134) on :
 
performer and performer rpm 1 share the same, not 2.
 
Posted by sydewayzLX50 (Member # 10217) on :
 
Yea i googled it you guys are right, the rpm2 doesnt work but the rpm1 does, is there a noticable gain? If not i might just buy a complete rpm2 manifold
 
Posted by Camara90 (Member # 134) on :
 
what is the setup? r
 
Posted by sydewayzLX50 (Member # 10217) on :
 
308 with the edelbrock performer 5.0 intake, edelbrock performer heads 2.02/1.60 valves, dual valve springs, 5 angle valve job, c/r about 9.5 to 1, 1.6 roller rockers, custom cam, 70mm t/b, longtubes, no cats, magnaflows, 24# inj, etc.

[ July 02, 2011, 10:43 PM: Message edited by: sydewayzLX50 ]
 
Posted by Camara90 (Member # 134) on :
 
If it was me I would put my money in a tune first.
 
Posted by FivePTSlow (Member # 7682) on :
 
Yeah, either get a custom tune, or purchase your own wideband and tune it yourself. You might be able to get 10hp out of an RPM II, but is that worth the install hassle and big price tag? I would say probably not. You could get a nice wideband for $300 install is easy, and tune it in your spare time to get 10hp no problem.

Or you could take the $ you were gonna spend on the RPM II and put in a small N2O shot and get more than 10hp no problem.

Or get yourself some 36# injectors and switch to E85 and get way more than 10hp [Smile]

...just some food for thought [burnout]
 




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