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SB Fuel Pump Suggestions #1295627
09/02/12 11:21 AM
09/02/12 11:21 AM
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Indiana
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YO7_A66 Offline OP
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I am currently shopping for a new mechanical fuel pump and I am looking for suggestions. The last two that I have used have been the Carter M6866, which seem to last 2-3 years.
I would like suggestions on other brands, or the nicer Carter units.
I am looking for 5.5-7psi units which do not require a regulator.

What about the higher priced Carters, MP, Edelbrock or Holley pumps? I don't mind raising the price from my current $33 Carter as long as I am getting a good unit.

http://www.summitracing.com/parts/HLY-12-360-11/

http://www.summitracing.com/parts/EDL-1720/

Carter M6902:
http://chucker54.stores.yahoo.net/cam6sumefupu.html


Thanks

Last edited by YO7_A66; 09/02/12 11:57 AM.
Re: SB Fuel Pump Suggestions [Re: YO7_A66] #1295628
09/02/12 11:47 AM
09/02/12 11:47 AM
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indiana
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mcmopars Offline
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ive always had pretty good luck with the carters.seems like ive had one fail.they are a good mech pump that will support 400 h.p..holley makes a good pump as well.

Re: SB Fuel Pump Suggestions [Re: mcmopars] #1295629
09/02/12 11:55 AM
09/02/12 11:55 AM
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mcmopars Offline
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i see of your other post that you are replacing this pump.get the carter that you can replace the diaphram in . i think they used to be $70-80.it is a good pump.10 times the pump you are replacing

Re: SB Fuel Pump Suggestions [Re: mcmopars] #1295630
09/02/12 11:59 AM
09/02/12 11:59 AM
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YO7_A66 Offline OP
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Mc,
I am currently leaning towards the Carter M6902, which has the replacable diaphram.

Thank you for the reply.


1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)
Re: SB Fuel Pump Suggestions [Re: YO7_A66] #1295631
09/02/12 01:32 PM
09/02/12 01:32 PM
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5spdcuda Offline
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I am not sure how to explain this, but I am still using a stock replacement Autozone small block fuel pump that I've had for at least ten years and a couple of different engines. It probably shouldn't work, but it does. It has a 5/16 inlet and a 5/16 to 3/8 adapter on the outlet side. Fuel line is 3/8 except for a short section of 5/16 neoprene hose connecting the hard line to the fuel pump. I am also running a return line back to the tank. The return line is 1/4 in. with a .045 retricter. Both of the engines I've used it on make pretty good power, but somehow this cheap [ around $17.00 ] pump is able to supply the necessary fuel for a 3310 Holley up to at least 6500 rpm.

Re: SB Fuel Pump Suggestions [Re: 5spdcuda] #1295632
09/02/12 01:39 PM
09/02/12 01:39 PM
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RapidRobert Offline
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Me too, I used a cheap parts house Airtex? pump on a 360 SB (9:1/2bbl) circle burner (class rules-stock pump required) with 5/16" line and NO fuel starvation at 6200 RPM WOT though I am going to drill out the nipples to 3/8 & 3/8 line


live every 24 hour block of time like it's your last day on earth
Re: SB Fuel Pump Suggestions [Re: YO7_A66] #1295633
09/02/12 02:23 PM
09/02/12 02:23 PM
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lewtot184 Online content
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Quote:

Mc,
I am currently leaning towards the Carter M6902, which has the replacable diaphram.

Thank you for the reply.


this is the pump i would use. 3 valve and can be taken apart. the diaphragm is replaceable if you can find one. the mancini rebuild kits are junk!

Re: SB Fuel Pump Suggestions [Re: lewtot184] #1295634
09/02/12 03:10 PM
09/02/12 03:10 PM
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YO7_A66 Offline OP
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The Carter 6866 was no doubt enough pump for my engine. The main factor is that I have gone thru 2 of them in about 5-6 years and I want to try another unit to see if I can get some more time out of it.
I have ordered the Carter 6902 from Mancini.

Thank you all for your replies.

Re: SB Fuel Pump Suggestions [Re: YO7_A66] #1295635
09/02/12 10:39 PM
09/02/12 10:39 PM
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Dartcuda Offline
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The Edelbrock is the only one with 3/8" ports . whitch is 6AN size . Clay Smith still make a 1/2" (8AN) mechanical but some mods have to be done to use it.

Re: SB Fuel Pump Suggestions [Re: YO7_A66] #1295636
09/07/12 07:41 AM
09/07/12 07:41 AM
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YO7_A66 Offline OP
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I received and installed the Carter M6902 from Mancini last night. I noticed right off that the strength of the spring is much stronger than the spring on the Carter M6866 (one piece) unit that I pulled off.
The description of the M6902 pump shows 5.5-6.5psi but my mechanical gauge was showing 7psi plus/minus 1/2 or so. I was watching my float levels and they were right where I set them and my O2 gauges looked good, so the extra 1psi does not seem to bother my floats at idle.
I should be able to test drive it this weekend and hopefully this was the reason for my erratic lean conditions that developed out of no where.
http://chucker54.stores.yahoo.net/cam6sumefupu.html

7368375-6902-2.JPG (20 downloads)

1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)
Re: SB Fuel Pump Suggestions [Re: YO7_A66] #1295637
09/07/12 07:49 AM
09/07/12 07:49 AM
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YO7_A66 Offline OP
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Made In USA!

The 6902 shows up in the beginning of the casting part number on the flange.

7368377-6902-1.JPG (22 downloads)

1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)
Re: SB Fuel Pump Suggestions [Re: YO7_A66] #1295638
09/08/12 01:18 PM
09/08/12 01:18 PM
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YO7_A66 Offline OP
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The pump was the problem. I no longer have the lean issues and my A/F numbers are steady again.
Thanks for the suggestions!


1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)






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