Fuel pressure regulator
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Senior User
Joined: Apr 2006
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From: maricopa az
Fuel pressure regulator
I was wondering if anybody has used the bbk 1706 adjustable fuel pressure reg or the accel 74561 adjustable fuel pressure reg on 89 460 and how you like it and ease of install.
Lead Driver
Joined: Aug 2006
Posts: 5,670
Likes: 13
From: Sand Lake, MI
Changing fuel pressure regulator nothing difficult about it, couple of allen head screws hold it in place and two different sized O rings seal it, can't imagine an aftermarket would add a level of difficulty to that process.
Beyond that same question, why go to an adjustable regulator is your motor built beyond stock starving for fuel?
Beyond that same question, why go to an adjustable regulator is your motor built beyond stock starving for fuel?
Thread Starter
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Senior User
Joined: Apr 2006
Posts: 310
Likes: 0
From: maricopa az
Changing fuel pressure regulator nothing difficult about it, couple of allen head screws hold it in place and two different sized O rings seal it, can't imagine an aftermarket would add a level of difficulty to that process.
Beyond that same question, why go to an adjustable regulator is your motor built beyond stock starving for fuel?
Beyond that same question, why go to an adjustable regulator is your motor built beyond stock starving for fuel?
Installation of fuel reg pretty straightforward. Just really asking about the part for the 460 because they don't list it for the adjustable fpr ,but they list the list the same stock part #for the 302, 351,and 460
Cargo Master
Joined: Nov 2013
Posts: 2,168
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From: South Central,MO
I have one on my 89 460. Was easy to install. I like the gauge screwed into it, makes adjustments easy. I've played around with different pressures and 45psi (vacuum hose disconnected) seems to be the sweet spot for me, YMMV. Tried 50psi but didn't seem to make a bit more power and mileage went down the tubes!
Thread Starter
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Senior User
Joined: Apr 2006
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From: maricopa az
I have one on my 89 460. Was easy to install. I like the gauge screwed into it, makes adjustments easy. I've played around with different pressures and 45psi (vacuum hose disconnected) seems to be the sweet spot for me, YMMV. Tried 50psi but didn't seem to make a bit more power and mileage went down the tubes!
Elder User
Joined: May 2013
Posts: 533
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Changing fuel pressure regulator nothing difficult about it, couple of allen head screws hold it in place and two different sized O rings seal it, can't imagine an aftermarket would add a level of difficulty to that process.
Beyond that same question, why go to an adjustable regulator is your motor built beyond stock starving for fuel?
Beyond that same question, why go to an adjustable regulator is your motor built beyond stock starving for fuel?
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Lead Driver
Joined: Aug 2006
Posts: 5,670
Likes: 13
From: Sand Lake, MI
All three use the same regulator work on the same fuel pressure, the differences come from the injectors, LBS fuel per hour rating, and then pulse rate/duration commanded by computer based on sensor input.
Last thing I want my 460 doing is running rich by attempting to force more fuel in than it requires!
And its not a race car its a truck.
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Your truck should not lean out of fuel unless it is FAR FROM stock. Be careful about changing fuel pressure. The ECU uses a duty cycle for injecting fuel and that is based on a certain amount of pressure. More pressure means more fuel and if the ECU doesn't know about that, it can cause issues.
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