Re: fuel pressure
[Re: maxie]
#1654716
08/03/14 10:40 PM
08/03/14 10:40 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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If you have a KNOWN calibrated gauge a Holley will take 7.5 PSI.. it MIGHT go 8 PSI without blowing the needle off the seat... I run 7-7.5 psi... the AFB style take a lot less
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Re: fuel pressure
[Re: maxie]
#1654723
08/04/14 12:56 AM
08/04/14 12:56 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
It has holley 4160 770 carbs on it
7 psi is realistic with a good gauge.. also you MIGHT want to increase the needle/seat more than the .110 if you need it
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Re: fuel pressure
[Re: maxie]
#1654724
08/04/14 01:03 AM
08/04/14 01:03 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Forgot I also got the custom made covers for it also.
Your covers can be screwing up the inlet air.. do you have a radiused inlet under them and what is the mesh.. it might be too small for good flow
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Re: fuel pressure
[Re: maxie]
#1654726
08/04/14 11:53 PM
08/04/14 11:53 PM
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Joined: Jan 2003
Posts: 10,016 Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,016
Frostbitefalls MN (Rocky&Bullw...
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With four needle and seats feeding the motor, the pressure can be a lot lower. It shouldn't take over 4 psi as long as the regulator is by the carbs. I had a system many years ago that dropped to 3 psi with two 800 Holleys feeding about 600 hp, never went lean.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: fuel pressure
[Re: 383man]
#1654728
08/05/14 11:03 AM
08/05/14 11:03 AM
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Joined: Sep 2004
Posts: 1,499 San Antonio,TX
440W8 Duster
pro stock
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pro stock
Joined: Sep 2004
Posts: 1,499
San Antonio,TX
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Mine is set at 5-5.5 lbs as per Bob Book and I have a Magna Fuel 500.
70 Duster W8 motor. 1.29 60ft 5.79 1/8 at 120 mph glide with 1.80 gear @3170 lbs.
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