bad MAF?

[JD1964]

there may be other mafs that fit but have different calibrations. if you've already tuned to the fbody maf thats what you should get. the bbody maf has a different calibration too.

Interesting. At Rock Auto they show cross reference to other vehicles that share the F body MAF part number and you are correct, the B body LT1 cars are not included in that list. But interestingly, Vortec, LT1 and LS engine equipped cars and trucks are included under the same part number. So, the MAF we just bought came from a 2001 GMC Savana van and its compatible with the 1994 Z28. Heres the listing at Rock Auto and if you click on the part # 2133457 on the AC Delco line you'll see the cross reference vehicles.

Even more interesting is this. We just went and got the used MAF before we took the suspected bad one out of the wagon. Low and behold we discovered the screen had caved in and shorted the sensor. Pulled the screen out and the thing fires up and runs like it should. So now I have a spare MAF which is just fine.

On the screen idea, I now have a screenedMAF and an unscreened MAF. Is there any benefit in running unscreened in my application? The only mods on this LT1 are 1.6 roller rockers, 52mm TB and long tube headers.

Here's the pic of the caved in screen. Damn I should have just checked that initially on the side of the road. Could have just driven home.