Fuel pump advice
Thread Starter
5th Gear
Joined: Mar 2018
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From: Troy Missouri
Fuel pump advice
I just bought a 84 Corvette with upgrades pushing about 450 hp, but with the stock fuel pump. It staggers in the higher rpms and I dont know what fuel pump would be best. Any help?
Last edited by Alex Bryant; Mar 29, 2018 at 02:24 PM.
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Joined: Dec 1999
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From: Lacey WA RVN 68-69
NCM Sinkhole Donor
Always helps to mention the year of the car. In fact, it even helps to add the info in your profile. Location is also a help.
The LT1 C4's had a fuel cutoff in the ECM that was (I think) about 5800 RPM. The engine could wind higher than that by editing the cutoff in the ECM. Does the car have a tune that did that? If not, the ECM is probably what is causing the stumble. The OEM pump should be good for higher RPM's.
In any event, it would be a good idea to replace the fuel filter and pull the pump assembly and check the "sock" in the pickup for any clogging.
The LT1 C4's had a fuel cutoff in the ECM that was (I think) about 5800 RPM. The engine could wind higher than that by editing the cutoff in the ECM. Does the car have a tune that did that? If not, the ECM is probably what is causing the stumble. The OEM pump should be good for higher RPM's.
In any event, it would be a good idea to replace the fuel filter and pull the pump assembly and check the "sock" in the pickup for any clogging.
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From: Park City Utah
