Holley 670 cfm adjustable fuel pressure regulator
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Joined: Feb 2005
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Car: 1988 Chevy silverado K5
Engine: 350 bored .030, crane cams hyd bluprint l-79 cam 447 lift 272 dur, camel hump heads port and polished 1.94 1.50, afterburner headers and y pipe, holley 670 cfm tbi, holley projection dual plane manifold, accel high pressure fuel pump, 3 inch exhaust
Transmission: 700 r4 with corvette servo and shift kit.
Holley 670 cfm adjustable fuel pressure regulator
I am not sure how high the adjustable fuel pressure regulator will push the psi... does anybody know?
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Joined: Jan 2002
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From: Moorestown, NJ
Car: 88 Camaro SC
Engine: SFI'd 350
Transmission: TKO 500
Axle/Gears: 9-bolt w/ 3.23's
If its the OEM replacement one, then itll safely go up to 18 PSI. Higher then that causes the pump to dead-head.
Thread Starter
Member
Joined: Feb 2005
Posts: 197
Likes: 0
Car: 1988 Chevy silverado K5
Engine: 350 bored .030, crane cams hyd bluprint l-79 cam 447 lift 272 dur, camel hump heads port and polished 1.94 1.50, afterburner headers and y pipe, holley 670 cfm tbi, holley projection dual plane manifold, accel high pressure fuel pump, 3 inch exhaust
Transmission: 700 r4 with corvette servo and shift kit.
What about the holley fuel pump? Will it be able to get 25 psi with the holley pump? I bought the pump holley recommended which is this one...
Holley Performance Products 258 PPH In-Line Universal Electric Fuel Pump*12-927
15 psi and says it'll support 400 hp on tbi units but I'm hoping I can get 430 hp out of it... what do you think?
I also have this one JEGS High Performance - Accel High Pressure Electric Fuel Pump
but its a very high psi(45 psi) pump that I bought before I did my homework so I switched to the holley pump(won't the regulator bring that down though?). Which one do you think would be best for my setup? My specs are under my name... but I plan to switch to afr 180's and a 252/252 425/425 smog legal tq cam...
with those heads and cam desktop dyno says 430 hp and 461 ft lbs with a tq curve like a ruler: Table numbers desktop dyno(beastofablaze - Photobucket - Video and Image Hosting. But I don't know which pump to run.
Holley Performance Products 258 PPH In-Line Universal Electric Fuel Pump*12-927
15 psi and says it'll support 400 hp on tbi units but I'm hoping I can get 430 hp out of it... what do you think?
I also have this one JEGS High Performance - Accel High Pressure Electric Fuel Pump
but its a very high psi(45 psi) pump that I bought before I did my homework so I switched to the holley pump(won't the regulator bring that down though?). Which one do you think would be best for my setup? My specs are under my name... but I plan to switch to afr 180's and a 252/252 425/425 smog legal tq cam...
with those heads and cam desktop dyno says 430 hp and 461 ft lbs with a tq curve like a ruler: Table numbers desktop dyno(beastofablaze - Photobucket - Video and Image Hosting. But I don't know which pump to run.
Last edited by Blazin4x4; Sep 4, 2006 at 09:07 PM.
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iTrader: (2)
Joined: Jan 2002
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From: Moorestown, NJ
Car: 88 Camaro SC
Engine: SFI'd 350
Transmission: TKO 500
Axle/Gears: 9-bolt w/ 3.23's
Youll probably need around 25-30 PSI to support some decent power with the holley injectors without going static at higher RPMs/loads. You will also need a different pump and a high pressure fuel pressure regulator spring from holley.
Those DD numbers look a little over optomistic. I would guess that with the AFRs and mild to moderate cam you could probably get around 350-375 in chassis horsepower.
Those DD numbers look a little over optomistic. I would guess that with the AFRs and mild to moderate cam you could probably get around 350-375 in chassis horsepower.
Holley might have an alternative "spring". i run a GM TPI pump with an Aeromotive FPR(increments of .50 lbs on gauge) that has one spring for 10-20 and another for 20-50.
i currently with GM 80 lb injs at 23 lbs FP.
Holley says 15 lbs with 61 lb inj's supports 400 HP? that does not add up?Holley also(used to) sell a 80 lb inj unit. i thought all Holley was rated 20-22 lbs FP. maybe they changed rating system.
i currently with GM 80 lb injs at 23 lbs FP.
Holley says 15 lbs with 61 lb inj's supports 400 HP? that does not add up?Holley also(used to) sell a 80 lb inj unit. i thought all Holley was rated 20-22 lbs FP. maybe they changed rating system.
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