Duntov1967

iTrader: (22)

I have a new 402ci L92 engine going in my Tahoe backed by a 4l80e. I have 1-3/4" ARH headers. ARH can make me a custom y-pipe (to a single muffler) and I have the option of 3", 3-1/2" or 4" slip fit exit to the muffler. What size would be appropriate?

The cam specs are: 228/238 .571”/.585” 113 LSA +4 advance
Compression is 10.4:1

I will not be doing any racing as this vehicle is used maily for 4x4 use and occasional towing.

Thanks in advance for your responses.