Looking for specs for a GM MAF

[Brian Franchuk]

I went out to the junk yard today and found a MAF out of a late 80's 
buick, part number 25007770.  Does anyone have any info on this 
sensor or where I can look up GM sensors?  I was able to hook it up 
and get the frequency output working, but I would like to know how to 
translate the frequency to a mass flow rate.  Will this MAF be able 
to handle a 220HP 3.4 liter engine or do I need something bigger.

Thanks

Brian Franchuk