stevieturbo

So what benefit does running an excessively large TB offer ?

I cant see any benefit at all ? Maybe well beyond 1000bhp a larger than stock might be worth something.. But at or below it, I just dont see it.

IT_SS

iTrader: (5)

less restriction = more power at a lower boost level, but as I stated in my own personal case, its a bang for buck deal. All gains I've seen in regard to the LS2 were on NA platforms so I 100% agree on speculations of structural integrity, Same reason you see more 402/8s than 427s

stevieturbo

And many wrongly assume that the TB is the main restriction in the first place. It simply is not.

If you are using 76mm OD plumbing ( ie 3" ) often with several bends before the TB. then clearly that will pose more of a restriction than the 90mm TB when fully open. The 90mm might flow all the air the engine can consume at say 70% open. So all a large TB does is reduce resolution of control under foot.

98Z28CobraKiller

iTrader: (17)

The FAST is designed to come apart and is bolted together. The LS2 is welded together on the outer edge but the inside is not. I epoxyed the 3 layers of my FAST together and have run 23 psi through it without issue. Can't do that with LS2.

Just becuase someone has made 900-1000-1200 or whatever power, doesn't mean it's the best option. Maybe they left 50-100 hp on the table.

9sectruck

iTrader: (9)

my ls2 intake is 100% virgin, I thought about doing some clean up inside while it was off but def. not going to remove the inside pillars,

02blackbeauty19

iTrader: (22)

After hearing a good bit of advice, I don't think I'll put any money into it, just a little bit of time. Ill just probably smooth the runners a little bit and maybe the opening. Anymore than that, I don't think it will be worth it on a FI setup.