evo462

iTrader: (27)

I measured my LS1 TB with a tape measure, and apparently I thought it was 4" diameter, so I ordered a 3" to 4" silicone coupler for my 3" intercooler plumbing. I got the coupler today, and it is just a shade too big on the TB side, which leads me to believe that maybe I actually needed a 3.75". Also, I ordered a straight/180* coupler and was wondering if a 45 or 90* would mate up to the plumbing easier?

ChevyChad

iTrader: (50)

4" is the correct size. Once you put a clamp on the silicone coupler it will tighten it up.

evo462

iTrader: (27)

Really? It didn't seem to me like a clamp would tighten it up without it binding and leaking. I'll try tomorrow then. Thanks!

kmracer

iTrader: (1)

i bought one that was 4" and was like WTF and returned it, then bought a vband.

ChevyChad

iTrader: (50)

Dont know what to tell ya other than the 4" silicone coupler I bought from siliconeintakes fit my TB perfectly.

griffsbombelco

iTrader: (2)

same here really sloppy. I got the 3.75 fits very nice snugg without clamps it feels much better I was worried about blowing off the 4

Need_a_Camaro

iTrader: (27)

^^I was using a 3.75 on my old tb, worked like a charm.