85mm MAF ???
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pcv
my setup is stock bottomend tsp stage 2.5 243 heads, 236/242 6xx/6xx 112+4 cam, ported 78mm tb, slp lid 25%ud lt's lm1 exhaust, ls6 intake, just wondering if the 85mm maf is better for this setup
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You will need a tune with it, so don't worry about an 85mm MAF until you get a bunch of mods together to make the tune worth it... I've had tuners tell me they won't tune it with the 85mm, only a stock one.
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Really? Cause I know a few tuners that would throw a ported stock MAF at your head. Just search on this site for ported MAF's and grenaded transmissions. Ported MAF's and after market MAF housings are always a bad idea.
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Been running an 85MM descreened GM LS6 MAF since '02. The important thing with a MAF is not to bolt it on and go, but to get a tune right after install. I would stick with a GM MAF if you want to go larger as you can be confident it has been properly calibrated to factory specifications. I would be less confident in the aftermarket companies (like Granatelli) and agree that messing around with ends and porting the stock MAF is asking for problems. There are some gains to be had with a larger MAF as it is less of a flow restriction, however since it's role in metering air is critical you need to do it the right way.