Tech / General EngineIs your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!
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i need to know if a tpi pump is a direct replacement for an in-tank lg4 pump or do i need the whole sender too? thanks
__________________ '87 Burnished Copper Camaro LT. L98 with Pro Topline heads, LT4 hot cam, LT1 intake conversion. T56 trans and some suspension goodies.
A TPI pump puts out over 40psi, which would basically turn your QuadraJet into a fuel fountain. IF I remember correctly, my LG4 mechanical pump is putting out between 5 and 6. It's gotta be somewhere around there, cuz my Edelbrock 1406 likes it, and they flood over 6psi.
Lg4s do not have an in-tank pump, it is instead a mechanical fuel pump mounted on the lower passenger side of the block and driven via a pushrod which rides on the fuel pump lobe on the cam.
__________________ North Texas Third Gen Association 1988 GTA 5.0/M5/3.45 LSD, T-Tops, Digital Dash, Leather - Current Ride 1983 Firebird S/E - Stripped 1995 Chevy 1500 5.7 Ext. Cab - Daily Driver
LG4s do in fact have an electric in tank pump which is low pressure, I don't know if they all did but my '87 does. I'm converting to fuel injection, hence the reason for switching pumps. I know a guy that converted from TPI to carb and left his stock pump in, well his car caught fire!
__________________ '87 Burnished Copper Camaro LT. L98 with Pro Topline heads, LT4 hot cam, LT1 intake conversion. T56 trans and some suspension goodies.
