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Topic: Can i run 5psi on a stock unmodded 650 holley??? (Read 1110 times)
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noyz25
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I was told u can but i want to make sure before i do it.
Appreciate any and all input.
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wazslow
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Location: Fallsington, PA
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Good luck, let us know how it go's. I wouldnt do it.
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1989 LX notch
-434sbf PT 101
-Dart Pro 1 225's,cammotion custom cam, ported super victor, csu 850 carb
-315 x60x15 MT radials
-PA glide, PTC convertor
8.17 @ 169.85 on 17lbs 1st pass in two years
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furchaser
Pissing off rotards
After Dark
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Posts: 2033
Location: Arnprior Ontario Canada
1980 Mazda RX7 twin turbo small block chev
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I was told u can but i want to make sure before i do it.
Appreciate any and all input.
No , ... well let me rephrase that .. Yes you can if you want a big pile of melted , broken and generally fucked up junk .. If that's what your after then fill your boots .  |
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Generally speaking, you aren't learning much when your mouth is moving.
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brianj5600
T44
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Restrict the HSAB's to about .025", take out the PV protector and jet up 5 sizes and you should be OK. But then you have modded it. It might work w/o removing the PV protector. The other problem is brass floats collapsing. I have never seen a test on how much pressure they can withstand.
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67 Mustang coupe, 351w, S475, C4, 8.8 http://videos.streetfire.net/profile/brianj5600.htm It's amazing what you can do when you don't know that you can't do it. |
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blown385
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Location: Orlando
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Dont forget a 1:1 regulator .  |
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385 sbc / S480 at 16.5 psi ............9.62 @ 139 mph 4400lbs
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OLDHEAD
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Don't forget at least 12# of fuel pressure before the regulator.Oldhead
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Only 72 years old,Drive everywhere car1980 Malibu 3575#,4000 miles last year,SBC with YSI,,Turns 8.99 in drive ,No brake...have 3 stages of nitrous,used 1 mid 8s
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Batass
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Location: Manheim, PA
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12# of fuel pressure?
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91 Camaro 383 Lightning heads + S-trim
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furchaser
Pissing off rotards
After Dark
Online
Gender:
Posts: 2033
Location: Arnprior Ontario Canada
1980 Mazda RX7 twin turbo small block chev
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12# of fuel pressure?
I think he was trying to say if he was to run 5 lbs of boost he would need at least 12 psi before the reg to be able to regulate it.. 6.5 psi base + 5 psi for boost = 11.5-12 psi boosted fuel pressure ..... But I could be wrong..... |
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Generally speaking, you aren't learning much when your mouth is moving.
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wazslow
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Location: Fallsington, PA
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Do the hanger 18 mods on this site. Its inexpensive. Why try and make something work that isnt designed to. Im not sure the stock floats will like the boost!
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1989 LX notch
-434sbf PT 101
-Dart Pro 1 225's,cammotion custom cam, ported super victor, csu 850 carb
-315 x60x15 MT radials
-PA glide, PTC convertor
8.17 @ 169.85 on 17lbs 1st pass in two years
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68mustang
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Posts: 285
Location: Wyoming, IL
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x2
it really is simple to make those mods. some people get scarred when you talk about modifying a carb, i was kinda on eof them. but it really is simple stuff once you take the time to look at it.
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'68 Mustang coupe,5.0block,tf wedge heads,.484/.477 110LSA,Wieand dp,roller rockers,Holley self-modded carb MP T70 .68,13psi a/a intercool,owner built pipes,MSD BTM,2500stall C-4, no new times yet
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pontiac_baron
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No.
5psi is a pretty good amount for a stock carb.
I just worked halfway on hangar 18 mods for a carb.
3lbs of boost on a test and it went to 13-14 air/fuel.
....needs more mods...and I know what I'm doing
Stock carb and your shit is going to blow up in a hurry. Restricting HSAB's is a good start
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