I left my truck at work tonight in the shop so it would be cold tomorrow to do some work on it and well I forgot to get some measurements on the TB & MAF so i can finally finish up my CAI.

So, does anyone have the outside diameter measurements of the TB & MAF??
I thought the TB was 4" and the MAF was 3.5" but I could be wrong can any verify this? Its on a 99' 5.3

Thanks

 

the tb is 4" and the maf is 3". when you use the rubber seal for the tb, you have to grind a lil bit on the inside of the pipe for the seal to fit good on it and to be able to slip over the tb. same for the 3" coupling to go over the maf. hope this helps... lance

 

Perhaps I have a different MAF but both my TB and my MAF are 4". Im sure of this as I had to buy 3 3" to 4" reducers for my intercooler

 

Well not to bust anyone's ***** but i measured them today at the shop and the TB is a 4" as stated but like thought the MAF is 3.5" OD

 

well i used a 4" elbow to fit over the tb, 4" 12.5" pipe to a 4" to 3" reducer to the maf.