ls1 maf

[1kwick6]

can you use a ls1 maf or not all i ever hear abuot is lt1

 

[TurboDave]

Yes, the LS1 or the LT1 sensor can be ran. Of course, either would require the use of the MAF Translator (translates "chevy" language out of the MAF to "buick" to the ECM).

 

[UNGN]

The LS1 MAF is 3.5" and the LT1 MAF usually refers to the Non-Fbody LT1 MAF which is a 3" version. The 3" LT1 sensor is easily incorporated into the stock hose sizes and still flows more than a stock MAF. The LS1 sensor flows about 200 CFM more than 3", but needs adapters to work (not really a big deal).

 

[salvageV6]

I got one on salvageV6 works fine. Bought it with the Translator + when they were on sale.

 

[bruce]

Originally posted by UNGN
The LS1 MAF is 3.5" and the LT1 MAF usually refers to the Non-Fbody LT1 MAF which is a 3" version. The 3" LT1 sensor is easily incorporated into the stock hose sizes and still flows more than a stock MAF. The LS1 sensor flows about 200 CFM more than 3", but needs adapters to work (not really a big deal).

Actually more like 110 CFM at 28" of water.
The LT1 flows about 50 CFM more then a stock GN.

 

[UNGN]

Originally posted by bruce


Actually more like 110 CFM at 28" of water.
The LT1 flows about 50 CFM more then a stock GN.

I guess I should have said "potential to flow" instead of flow.

A screenless 3.5" with a blended screen ridge can flow over 1000 CFM while a LT1 3" with the same done to it flows around 800 CFM.

A screenless 3" LT1 MAF with a blended screen ridge would flow close to, but not quite 200 CFM more than a 1 screen stocker.

I've never had a problem with a screenless LT1 (It acts 100% normal), even using chips that wouldn't run with a screenless stocker.

 

[blackbuick87]

How does the screen come off the LT1 MAF? When I looked at mine it looks like once its off it cannot be put back on. Is it just "glued" on?

 

[UNGN]

Originally posted by blackbuick87
How does the screen come off the LT1 MAF? When I looked at mine it looks like once its off it cannot be put back on. Is it just "glued" on?

You pretty much have to destroy it to get it out. It can be done without destroying it, but if you use your thumbs like I did, it will likely bend and wreck. I don't know if it is glued, but it's in there pretty good.

Take the sensor apart with a torx so you can pop the screen out without fear of harming the electronics. Then blend in remaining screen ridge to smooth airflow.

FYI: Removing the Airfoil like F-body people do makes no sense from a flow perspective. The turbulence created by the exposed black plastic stiffener negates the majority of the CFM gains of the increased flow area. Also, the sensor is calibrated for the give throat opening. Enlarging the throat would make the engine leaner (which could be compensated for using the translator) and extra tuning would be required.

 

[bruce]

Originally posted by UNGN


I guess I should have said "potential to flow" instead of flow.
A screenless 3.5" with a blended screen ridge can flow over 1000 CFM while a LT1 3" with the same done to it flows around 800 CFM.
A screenless 3" LT1 MAF with a blended screen ridge would flow close to, but not quite 200 CFM more than a 1 screen stocker.
I've never had a problem with a screenless LT1 (It acts 100% normal), even using chips that wouldn't run with a screenless stocker.

At what kind of pressure drop are you flowing these at?. Or do you mean when in a boost condition can flow that much?.

Might try a blow thru screenless, redo the MAF tables, and all of a sudden life ain't the same.

 

[Two Lane]

And the Z-06/LS-6 is a 3.75"...how much CFM with screen intact?

 

[bruce]

Originally posted by blackbuick87
How does the screen come off the LT1 MAF? When I looked at mine it looks like once its off it cannot be put back on. Is it just "glued" on?

The ones I've had, have a snap ring holding them in.

 

[UNGN]

Originally posted by bruce


At what kind of pressure drop are you flowing these at?. Or do you mean when in a boost condition can flow that much?.

They were flowed at 28" water by 1320 about 3 years ago. An LT1, a screen less LT1, an LS1 and screen less LS1, an airfoiless/ported LS1, A stocker, a stocker with one screen removed, a stocker with no sreens, a stocker with no screens and no venturin and a stocker with no screens, no venturi and a 4" to 3" bellmouth (from steve Yanklin). He came up with a great comparison between the different variation of all three, but only Steve Yanklins stocker with the bellmouth attached achieved the true flow capability of the MAF (over a 1000 CFM)

When 1320 had them flowed, he flowed them with no type of bellmouth what so ever (except for the stocker with Steve Y's Bellmouth). The flow capability of an MAF in a pipe is much higher than a MAF that open to the air, because of the edge effect of the air at the opening. To measure the true CFM capability of something, you need to make sure that the air flowing into the MAF is straight and not turbulent and that large a boundary layer isn't created by the opening.