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I had a 1 year old fuel pump just die today. Car sputtered then died. Looked and no fuel pressure on the gauge. Restarted it and gauge only went to 2 PSi then 0 and died. Tow truck. Stock fuel pump. Motor is a mild performance. 750 holley, mild cam, headers, Edelbrock performer intake, MSD box and distributor. Fresh engine rebuild. Fuel tank replaced last summer. Before this it ran great. Started easily, idled fine, fuel gauge showed around 5-6 psi usually. Any recommendations for a new fuel pump?
Perhaps an in-tank electric pump? You can put a fuel pressure regulator on your frame rail to keep the carb happy, and you'll be one step closer to EFI when you get sick of carbs.
Get a fuel pump rated for E85, and never worry about ethanol again. 😉
Last edited by Bikespace; Apr 18, 2026 at 04:23 PM.
Funny thing is I just filled up with ethanol free this morning and was bitching about the $4.65 a gallon. Probably a year too late to start that though.
I do have to add that two other corvettes stopped to make sure we were ok. That was nice since we were on a mountain road far from any town.
The pivot shaft used to be manufactured so it would not fall out. They are just "staked" in place these days and fall out in service. Pressure is all over the place now! They SUCK!
I've been using plain jane Carter pumps for years without issue. Why not just one off Rock Auto? They've also exclusively eaten nothing but E10 gas because I have absolutely no choice without the slightest problem, I think that arises after it sits a long time and mine never does.
When I recently purchased a new mechanical fuel pump for my big block, I read through a ton of poor reviews for most pumps for sale today.
The one brand I found that still offered excellent reviews was the Edelbrock.
They have many different styles to choose from depending on your use and application.
This is much more difficult then i thought it would be. Every brand seems to have negative reviews of some sort. Like anything else though, rarely do people post lots of good reviews. They install, no problems and move on. Most reviews are from ones that had issues more so than not. Which probably leaves lots that all worked out fine. Tough decision.
This is much more difficult then i thought it would be. Every brand seems to have negative reviews of some sort. Like anything else though, rarely do people post lots of good reviews. They install, no problems and move on. Most reviews are from ones that had issues more so than not. Which probably leaves lots that all worked out fine. Tough decision.
WAG
Perhaps your particular brand and P/N pump was manufactured Before production included alcohol-resistant diaphragm ?
Perhaps yours was older shelf-stock ?
Perhaps today's production of same part number Does have alcohol-resistant diaphragm ?
How could consumer Know ?
WAG
Perhaps your particular brand and P/N pump was manufactured Before production included alcohol-resistant diaphragm ?
Perhaps yours was older shelf-stock ?
Perhaps today's production of same part number Does have alcohol-resistant diaphragm ?
How could consumer Know ?
Yep. Exactly. I was about to pick up an Edelbrock at a local parts store but started to wonder how long has it been sitting on the shelf? I don't think they sell many. The one that failed was only a year old. Not sure what the brand is. Guess it doesn't matter. That thing left us stranded on a non-friendly mountain road to stop on. Hairpin turns and about a 1000' drop off about 5' from the edge of the car. Luckily had one bar on the cell and got through to Haggerty for a tow and our neighbor to come rescue my wife before she had a panic attack.
Order one directly from Edelbrock or someplace like Summit Racing.
That way you know it will be a newer item and not one sitting on someone’s back shelf.
Edelbrock has great customer service tech support and if you ask them they may have something they can suggest that better resists the new fuels and lasts longer.
I’ve been working through the same speed/machine shop for decades.
He doesn’t keep many parts on his shelves, but orders directly from the manufacturers when he needs a part.
If you can find someone like that, they are always the best resource for almost anything.
Order one directly from Edelbrock or someplace like Summit Racing.
That way you know it will be a newer item and not one sitting on someone’s back shelf.
Edelbrock has great customer service tech support and if you ask them they may have something they can suggest that better resists the new fuels and lasts longer.
I’ve been working through the same speed/machine shop for decades.
He doesn’t keep many parts on his shelves, but orders directly from the manufacturers when he needs a part.
If you can find someone like that, they are always the best resource for almost anything.
I just ordered a Edelbrock 1721 with a couple fittings from Summit. Hoping it fits ok.
I just ordered a Edelbrock 1721 with a couple fittings from Summit. Hoping it fits ok.
That’s similar to the pump I installed on my big block.
Its easy to clock so you can adjust where you want or need your fittings and that one is pre set to 6 psi so you probably won’t need to install a regulator.
Nice choice!
Perhaps EB site's in error OR perhaps they're interchangeable, but that's how EB site reads ? just sayin'
I ordered the 1721. I have a small block. I'm just hoping it will clock to an acceptable spot to allow for connectors to fit without interference with the frame. They sold me several adapters so guess we'll see. Be here today.
Last edited by LT-1 1970; Apr 21, 2026 at 12:07 PM.
In post #1 you mentioned the engine was freshly rebuilt.
If the fuel pump rod wasn’t replaced at that time, you might consider installing a new one.
It’s another part you don’t want to purchase at you neighborhood parts store and do some research to insure the rod material or material on the top portion is compatible with your camshaft material.
The Edelbrock pump I installed is different, but it also has the ability to clock the two ports.
It is a nice feature especially if you plan building your own hardline up to the carb.
Now would also be a good time to install a good inline fuel filter, if you don’t already have one.
Redhorse Performance offers some nice ones.
Their product quality is top notch and they are also available through Summit Racing.
Last edited by OldCarBum; Apr 21, 2026 at 12:31 PM.
No need to complicate fuel pump pushrod material choice any further than truly necessary. GM has already figured it out for most sbc/BBC applications.
GM installs same fuel pump push rod (P/N 3704817) in its sbc/BBC crate engines with Cast Iron flat tappet cams AND in those with roller cams made of SAE 5150 alloy Billet Steel. Same P/N Fuel Pump Push Rod also replacement in Many earlier serial production motors.
Fact check's simple: review parts lists within Chevrolet's published install guides for different Chevrolet-GM crate engines; Both sbc & BBC.
Icing on the cake ? GM P/N 3704817 is stupid cheap to buy & just as easy to acquire !
Fuel pump recommendations
