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  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech

Holley Avenger OR Road Demon

  • Thread starter Thread starter Steve69
  • Start date Start date Aug 9, 2005
S

Steve69

Member
May 11, 2005
233
0
16
Aug 9, 2005
#1
  • Aug 9, 2005
  • #1
Hi Guys

Im running a modified 302 with 4SPD with a Stealth Manifold. What Carburetor
would you recomend & what would be a good size. 570 & 670 or 625 with
demon.

Thanks
Steve69
 

302 coupe

Founding Member
Mar 2, 2000
1,952
3
36
Macon, Ga.
Aug 9, 2005
#2
  • Aug 9, 2005
  • #2
just get a traditional 650 double pumper. I'm not a big fan of the new 'fad' carbs (avenger, demon, etc). Quality on them has been less than expected.
 
S

steel1212

Active Member
Jun 24, 2004
1,180
0
36
Frankfort, Ky
Aug 9, 2005
#3
  • Aug 9, 2005
  • #3
You can never go wrong with an old tried and true favorite like the 650 dp. I haven't had any trouble out of my 670 avenger YET though and other than getting ready to bump up the squirter a size its been pretty much a bolt on and go.
 

BlueMonster65

Founding Member
Feb 24, 2001
385
0
16
Connecticut
Aug 9, 2005
#4
  • Aug 9, 2005
  • #4
i ran a road demon 625 for quite some time, never had a problem, and was a significant improvement over my holley 4010. i switched to a holley 600dp 4150 that i modified for blowthru supecharging. if BG made a demon for blowthru i probably would have bought that vs. modding my old holley. i'd say you can't go wrong with either the road demon 625 or a holley 600dp.
 

ashford

Member
Dec 19, 2003
485
0
16
fargo ND
Aug 9, 2005
#5
  • Aug 9, 2005
  • #5
i have a road demon 625, absolutely hate it. either that or i got a bad apple. it get way lean when the secondaries are partially open. that would be the secondary transition circuit and theres no way to tune it.
 
S

Steve69

Member
May 11, 2005
233
0
16
Aug 10, 2005
#6
  • Aug 10, 2005
  • #6
Thanks for the input. Ill have to think
about some more.

Steve69
 
C

Clark

Founding Member
Aug 5, 1999
659
0
0
Rowlett,Texas
Aug 10, 2005
#7
  • Aug 10, 2005
  • #7
I have a 625 Demon and would go with the one with the better price!
 

Carnivore

New Member
Apr 4, 2003
154
0
0
Ferndale, WA
Aug 10, 2005
#8
  • Aug 10, 2005
  • #8
I've always heard the Demons are great... If you learn how to properly adjust it.


But I have no 1st hand experience.
 
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