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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

any experience with the edelbrock rpm 2??

  • Thread starter Thread starter 91notch5.0
  • Start date Start date Mar 10, 2008

what do do about intake situation

  • leave the gt40 alone, its fine

    Votes: 3 37.5%
  • port the gt40 it needs it

    Votes: 2 25.0%
  • buy the edelbrock rpm 2, its the ultimate

    Votes: 3 37.5%

  • Total voters
    8

91notch5.0

Founding Member
Apr 15, 2001
623
0
16
warren mi
Mar 10, 2008
#1
  • Mar 10, 2008
  • #1
my setup is in the sig. i have been told that if i change my real gt40 intake and put on the delbrock rpm 2 i would gain 20 hp to the rear tires with no loss of torque. currently i have 298 hp and 325 tq at the rear wheels. 20 hp sounds way to good to be true to me.

also....would i be better off to just get my gt40 ported instead?
 

NIKwoaC

中國製造
15 Year Member
Oct 31, 2006
5,525
943
214
Chengdu Province
Mar 10, 2008
#2
  • Mar 10, 2008
  • #2
I almost don't want to show you this because I want one myself but have you seen Eddie's new RPM II black powdercoat? Its so I almost can't handle it.

http://www.edelbrock.com/automotive_new/mc/manifolds/ford/perf_rpm-50.shtml

As far as the GT-40 goes, the upper can't be ported much because its tubular, not cast, but the lower can be ported a decent amount.

I'm sure you'll hear something from/about TMOSS porting, hes really the authority on porting in my experience.
 

2000xp8

SN Certified Technician
Aug 8, 2003
8,029
1,621
194
NJ
Mar 10, 2008
#3
  • Mar 10, 2008
  • #3
Probably a couple horses there, but i doubt 20rwhp.
Get a bigger better mass air meter (not a C&L) and you'll probably pick up a good 5-10rwhp right there.
The gt40 is a good street car intake, i'd just leave it.
 

88mouse

New Member
Apr 18, 2007
630
0
0
Mooresville nc
Mar 10, 2008
#4
  • Mar 10, 2008
  • #4
Go with the victor 5.0.
 

2000xp8

SN Certified Technician
Aug 8, 2003
8,029
1,621
194
NJ
Mar 10, 2008
#5
  • Mar 10, 2008
  • #5
88mouse said:
Go with the victor 5.0.
Click to expand...

umm, that's not really a good idea.
It's a high hp, high rpm intake, designed for strokers, sc's or turbo setups.
 

68converted

Member
Nov 19, 2003
772
0
16
Colorado
Mar 11, 2008
#6
  • Mar 11, 2008
  • #6
I can give you my first hand experience... I just sold my unused RPM II. From all the research I could find, it was way too big (air volume) for my application and use. The intake screams above 4K, but sucks down low. My friend has it on his '93 with a Novi SC; and he loves it.

I have a fairly "mild" combo. 70mm TB, 73 MAF, 165 heads, 270 cam, stock bottom end.

I ended up going with a ported Explorer intake for the low end torque and HP. Had I gone with my original plan for the intake, by adding a super charger, I would have been golden.
 

5spd GT

"the 5.0 owns all"
Founding Member
Aug 7, 2002
9,516
6
99
Arkansas
Mar 11, 2008
#7
  • Mar 11, 2008
  • #7
Port the GT-40, for what you have.
 

91notch5.0

Founding Member
Apr 15, 2001
623
0
16
warren mi
Mar 14, 2008
#8
  • Mar 14, 2008
  • #8
more??????????????
 

ninety15.0

New Member
Mar 10, 2004
1,336
0
0
Mar 14, 2008
#9
  • Mar 14, 2008
  • #9
Port the gt-40 lower. The rpmII is not really a street friendly 302 intake. Its more for strokers and FI.

Tmoss can do an excellent job porting your current gt-40 lower. Probably pick up about 20fwhp from his work...

You can purchase a core from him...he can do the porting and ship it to you. This means you have little down time...then you just have to ship him your lower after you do the swap! good luck man.
 

2000xp8

SN Certified Technician
Aug 8, 2003
8,029
1,621
194
NJ
Mar 14, 2008
#10
  • Mar 14, 2008
  • #10
20fwhp of an estimate is as good as saying 17rwp, that's a little generous of an estimate for porting a lower intake on a mild setup.
 

dcurtis

10 Year Member
Jan 19, 2006
688
7
39
Mar 14, 2008
#11
  • Mar 14, 2008
  • #11
I say keep what you have, I am debating on getting the rpm2 for my current engine build but it is a 331 with rhs 180 heads. I say current but it won't be finished until sometime in feburary of 09 due to cost, but I can wait.
 
D

Dark_5.0

New Member
Jan 1, 2007
13
0
0
Mar 14, 2008
#12
  • Mar 14, 2008
  • #12
I went from a 12.91 @105 to a 12.67 @107 with the only change being porting my GT-40 lower intake.

I have an Edelbrock RPM Performer II intake on my stroker motor cause I think the ported cobra intake would choke it on the top end.
 
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