Ported manifold and boost?
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Joined: Nov 2003
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From: Norn Iron
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.
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
9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
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
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.
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.
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,
Last edited by 9sectruck; Dec 28, 2011 at 09:20 PM.
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TECH Resident
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From: Shreveport, Louisiana
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.
