Skip to main content ↑ ↓
Topic: Fuel pressure questions... (Read 666 times) previous topic - next topic

Fuel pressure questions...

Edelbrock 600cfm. Just curious what the fuel pressure should be ?And what are the problems associated with too low of a pressure ?
Going over my engine and found that both carb adjustments were way out of balance and running rich. Now I'm seeing a fuel pressure reading on the regulator of 3.5 . Seems low to me. Would this account for a "falling on it's face" feeling in higher rpms ?
Thanks
88 Sport ,306 roller block, flat tops, ARP rods and bolts, Compcam 533 lift/ 270 duration, roller rockers, ported 351w heads with 1.94 - 1.60 valves, 550 springs, 600cfm carb , full length headers, 2.5" dual X-pipe exhaust, MSD ignition, Hughes built C4, Weld Draglites, Tracloc /Richmond 3:73's

Fuel pressure questions...

Reply #1 –
definately. should have enough pressure to keep the bowls full. that will vary on application. Average pressure would be between 4 and 7psi.
1979 Ford Fairmont
[/B]
5.0L/4R70W/8.8"/5-lug/3" Exhuast

Fuel pressure questions...

Reply #2 –
Thanks, I'll be bumping it up .
88 Sport ,306 roller block, flat tops, ARP rods and bolts, Compcam 533 lift/ 270 duration, roller rockers, ported 351w heads with 1.94 - 1.60 valves, 550 springs, 600cfm carb , full length headers, 2.5" dual X-pipe exhaust, MSD ignition, Hughes built C4, Weld Draglites, Tracloc /Richmond 3:73's

Fuel pressure questions...

Reply #3 –
you might also check the edelbrock website for some of the setup and troubleshooting or the manual if you still have it.

Fuel pressure questions...

Reply #4 –
Quote from: 88turbo;317526
you might also check the edelbrock website for some of the setup and troubleshooting or the manual if you still have it.


Just downloaded the manual. Looks like I should be at 6 to 6.5 .
88 Sport ,306 roller block, flat tops, ARP rods and bolts, Compcam 533 lift/ 270 duration, roller rockers, ported 351w heads with 1.94 - 1.60 valves, 550 springs, 600cfm carb , full length headers, 2.5" dual X-pipe exhaust, MSD ignition, Hughes built C4, Weld Draglites, Tracloc /Richmond 3:73's

Fuel pressure questions...

Reply #5 –
Yea, set it at 6lbs and you should be good to go, I run my big block 472 at 7.5 - 8lbs
88 sport,TW heads, comp xe270hr, cobra u/Tmoss ported lower, 65 mm throttle body, under drives,smog delete,
1.7 roller rockers, cai, k&n, bbk adj regulator, 76mm Pro-m,all MSD ign. MSD dist,18° base timing, 3g alt.1 5/8 ceramic headers, 255lph walbro, 2.5" h-pipe, flowmasters, silverfox valvebody, 3.73 gear,
http://i216.photobucket.com/albums/cc154/flipnbird/DSCF0185.jpg ( RIP : ( )