3.5" MAF from a Roadmaster??

[Boston GN]

Everything I'm reading (search function) says the Roadmasters had the 3" MAF. I picked this one up from a buddy who took it from his roadmaster that he was parting out, but it's 3.5". AC Delco unit, but I can't see the part number on it as it's installed on the car.
Any ideas?

 

[TurboDave]

Either the 3" or 3.5" will work, as long as you have a Translator for it.

 

[Boston GN]

Either the 3" or 3.5" will work, as long as you have a Translator for it.

Yeah, I have the translator and have had the set up for a while, I'm just wondering why there is the discrepancy of the sizes of Roadmaster MAFs. Everything I've read claim they're 3", but this one is 3.5"

I was more curious than anything

 

[TurboDave]

Don't know the answer to that one.

 

[TurboBob]

stock maf on the roadmonster is 3", the only way to run a 3.5" is to reflash the PCM (or run a translator, we did that back in the day...)

My old 96 Impala was set up with a 3.5", but it was a very unique setup.

Bob

 

[Boston GN]

Very strange indeed

 

[TurboBob]

its possible the car got a full powertrain swap from an f-body, or just swapped the PCM and MAF.

B