Air Box mod

[karnage]

Well I was bored and after lunch took the airbox off and cut out the flapper and smoothed the housing up with a fine rolox pad.The box is a little busted up so no big loss.Wonder how it got messed up but anyway.I hope for some good gains and I will have it dynoed again later.I think it turned out good for 20 minutes of work.Now what to do for the stacks??I was thinking of cutting the middle 2 down then get new ones later.I can see how restrictive this box can be.

 

[karnage]

Got it back together and the response is quite noticable just sitting.Cant wait to get it out on the road after I get tabs and my new filter comes in tomorrow.

 

[mountainmotor]

Now what to do for the stacks??I was thinking of cutting the middle 2 down then get new ones later.I can see how restrictive this box can be.

I wouldn't cut the bellmouth's off .

If it's a stock engine with just a pipe, little is to gain by even running the short stacks on cyl 2&3 . The small gain is at top where the stock cams are wanting to tap out anyway .

 

[karnage]

Yeah I just left them stock.I didnt want to mess with them.Hogging out the airbox made a big difference though.Now waiting on my new filter to come in.

 

[hayabusaboy]

Changing your 2 small stacks for 2 tall will give you better low end pick up

 

[VIPER]

has anyone done this to a gen2? i really havent seen much in the way of threads for it on gen2.

 

[hayabusaboy]

Does a gen 2 have the same stack arrangement in the airbox? If it does, i can't see why you can't do it?

 

[karnage]

So instead of 4 short stacks, runs 4 tall stacks??I thought that would increase top end like a highrise intake on a smallblock.

 

[hayabusaboy]

All tall stack gives you better low and mid range acceleration. The short stack mod is good for acceleration when travelling at high speed

 

[karnage]

Sounds interesting.

 

[hayabusaboy]

Give it a shot. I noticed a difference in pick up from 2000rpm. Do a search on here, there are claims of an 4hp increase

 

[karnage]

Will do.Such an easy mod for sure.To me the tall stacks look pretty tight in there for air flow but I guess velocity overcomes that.

 

[hayabusaboy]

I haven't a clue how it works, I just went off what some others said on here about it!

 

[karnage]

If I find a set of tall horns, I will swap it out and see what it does on the dyno when I go back.