3'' CAI

04solaryellow · Post by **04solaryellow** » Fri Jul 21, 2006 10:15 pm

I found a 3" s/s exhaust system at work. I have the means to cut and reweld it to make a CAI. My question is..will it be too big for the motor to draw the air in? Or should I stick with 2 1/2" like the others are made from?
Thanks for any suggestions

eastwoodsn352 · Post by **eastwoodsn352** » Fri Jul 21, 2006 10:20 pm

umm....i think the AEM V2 is like 3 inchs on the outside but it has a smaller tube on the inside of that 3 inch tube...you might could rig something up like the V2

Wisher2 · Post by **Wisher2** » Fri Jul 21, 2006 10:39 pm

Why would you use Stainless Steel Exhaust....Why not 6061 aluminum like all other intakes

03blackrt · Post by **03blackrt** » Fri Jul 21, 2006 10:40 pm

anything over 49mm (1.929 in) is good. That is the stock TB size....

OB · Post by OB » Sat Jul 22, 2006 3:06 am

Id personally suggest stickin with a medium sized tube, simply to avoid losing any turbulance. Kinda like exhaust sizing; too big will cause a major loss in turbulant flow. Stainless is overkill for a CAI, too heavy and way harder to bend and cut. Just use aluminum or even lesser materials (PVC/hard plastic).

caustic neon · Post by **caustic neon** » Sat Jul 22, 2006 8:24 am

Id say go for it the first gen guys have ben using 3in CAI for years with no probs and you dont need turbulant air in your cai. just look up the argument between the smooth aem style bellows tube vs trhe ribbed soick one.

04solaryellow · Post by **04solaryellow** » Sat Jul 22, 2006 11:35 am

The only reason for the stainless is it has nice mandrel bends, and is free. Cutting and welding is not a problem..20 years of welding ,fab,and machining exp..thanks for the input.

(sigh)...the days of flipping over the air cleaner lid on your B/B Chevy, rejetting your Holly 850 double pumper ,Hooker headers and Cherry Bomb exhaust are gone......