Fuel pump check

Grant Eldridge · 03-03-2013, 01:57 AM

Lots of good information posted here! I raced a 396 E/SA 325 or 350hp combination. I started with a Holley blue and #8 lines with the Holley regulator, just like the system described . Next I switched to Holley black, better Magnafuel deadhead regulator, #10 line, but the car still seemed not quite right on the top end. Finally, in my third system, I have an A-2000 Aeromotive pump, a return system with Aeromotive regulator and #10 lines both ways, and a #12 section from the regulator to the Q-jet to supply additional volume of fuel to the needle and seat. I know this sounds like overkill, but the Q-jet as explained above needs a lot of volume and not high pressure, or the float cannot overcome the higher pressure and the single needle will fail to seat, you will have flooding. This system will deliver a gallon in less than 15 seconds. If you spend the money once, and do a top notch system, you can then depend on it and concentrate on other things. I tried doing this the cheap way, guaranteed I wasted a lot of time and money re-doing the system several times to do it right. Plus, you can chase tuneup issues such as a slight top end miss or pop endlessly that are actually the result of lack of fuel volume. Just my two cents...

Grant Eldridge
E/SA 6650
National Record Holder 2006/2011

03-03-2013, 01:57 AM	#6
Grant Eldridge Member Join Date: Jul 2007 Posts: 124 Likes: 0 Liked 0 Times in 0 Posts	Re: Fuel pump check Lots of good information posted here! I raced a 396 E/SA 325 or 350hp combination. I started with a Holley blue and #8 lines with the Holley regulator, just like the system described . Next I switched to Holley black, better Magnafuel deadhead regulator, #10 line, but the car still seemed not quite right on the top end. Finally, in my third system, I have an A-2000 Aeromotive pump, a return system with Aeromotive regulator and #10 lines both ways, and a #12 section from the regulator to the Q-jet to supply additional volume of fuel to the needle and seat. I know this sounds like overkill, but the Q-jet as explained above needs a lot of volume and not high pressure, or the float cannot overcome the higher pressure and the single needle will fail to seat, you will have flooding. This system will deliver a gallon in less than 15 seconds. If you spend the money once, and do a top notch system, you can then depend on it and concentrate on other things. I tried doing this the cheap way, guaranteed I wasted a lot of time and money re-doing the system several times to do it right. Plus, you can chase tuneup issues such as a slight top end miss or pop endlessly that are actually the result of lack of fuel volume. Just my two cents... Grant Eldridge E/SA 6650 National Record Holder 2006/2011