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    1. · Registered
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      I had a Carter 172 on the 454 motor for a while, was getting fuel pump push rod wear that I thought was excessive possibly due to higher rate spring installed on that pump I had, was concerned of cam pump lobe wear. Changed that pump out for Holley 130. Pump is listed with 3/8 npt in/out (IIRC, it had AN fittings in/out prior version). Ran stock 3/8" line with -8 fittings (including smooth flow 90's). Inline fuel filter is important also, those are a major source of fuel pressure loss. Ran this setup on the 540 up to 126 mph with no signs of leaning out. I did not run this with a regulator. No, my car was not running in the 10's, I only ran it to low 11's, mph obviously indicated where it could've gone.

      https://www.holley.com/products/fue...s/carbureted_mechanical_pumps/parts/12-454-13
       
    2. · Registered
      70 Chevelle, 489 BB, Jerico DR4
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      Discussion Starter · #20 ·
      I had a Carter 172 on the 454 motor for a while, was getting fuel pump push rod wear that I thought was excessive possibly due to higher rate spring installed on that pump I had, was concerned of cam pump lobe wear. Changed that pump out for Holley 130. Pump is listed with 3/8 npt in/out (IIRC, it had AN fittings in/out prior version). Ran stock 3/8" line with -8 fittings (including smooth flow 90's). Inline fuel filter is important also, those are a major source of fuel pressure loss. Ran this setup on the 540 up to 126 mph with no signs of leaning out. I did not run this with a regulator. No, my car was not running in the 10's, I only ran it to low 11's, mph obviously indicated where it could've gone.

      https://www.holley.com/products/fue...s/carbureted_mechanical_pumps/parts/12-454-13
      Thanks GRN69CHV, I'm going to duplicate what you had. I bought a carter new in the box on Ebay.
       
    1. · Registered
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      The whole fuel system debate seems to be (like a lot of things) overdone. I was able to feed a 540" running a 4781 Holley via a Holley 12-454-13 130 GPH pump, factory 3/8" fuel line, inline billet (40 micron) filter, -6 dual feed fuel line. Car ran best of 126 mph at 4070# which nets out to 627 HP via calculators. Full exhaust, 3 v-belts (100 amp alt, PS, AC), stock '69 hood etc., etc. Had AFR meter hooked up, no signs of leaning out on the top end. Did not have a fuel pressure gauge so no idea of the fuel pressure on the top end.


      https://www.holley.com/products/fue...s/carbureted_mechanical_pumps/parts/12-454-13
       
    2. · Premium Member
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      1,277 Posts
      The whole fuel system debate seems to be (like a lot of things) overdone. I was able to feed a 540" running a 4781 Holley via a Holley 12-454-13 130 GPH pump, factory 3/8" fuel line, inline billet (40 micron) filter, -6 dual feed fuel line. Car ran best of 126 mph at 4070# which nets out to 627 HP via calculators. Full exhaust, 3 v-belts (100 amp alt, PS, AC), stock '69 hood etc., etc. Had AFR meter hooked up, no signs of leaning out on the top end. Did not have a fuel pressure gauge so no idea of the fuel pressure on the top end.


      https://www.holley.com/products/fue...s/carbureted_mechanical_pumps/parts/12-454-13
      I'm with you on this. The 496 in my truck is fed by the factory saddle tanks with the sock on the stock sending unit through the factory switching valve and factory 3/8" lines to a Carter replacement big body $30 fuel pump to a 4781. I don't have any time slips and the truck doesn't hook on the street but I can hold it WFO all the way to 6,000 RPM in high gear without running out of fuel as long as the filter is clean and I'm over 1/4 tank. Dyno read 628 HP and the truck is every bit of 4,500 pounds, likely more. I was on my way to the scale when the fan exploded...

      Anyhow, a well vented tank with clear, kink-free factory 3/8" lines and a good fuel pump is proven to be good for low 10s by more than one guy around here. I will admit that I haven't done it personally, though.
       
    1. · Registered
      70 Chevelle, 489 BB, Jerico DR4
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      Discussion Starter · #7 ·
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