Mike TexaSS

iTrader: (2)

I know this isnt LS1 related but power is power. And there are a lot of good minds here so here it goes.

I took off my LT4 intake on my Impala SS last night. I found out that my 58mm TB isnt even port matched to my intake!



So I dropped it off to my porter this morning and he calls me and tells me that not only is the front not port matched but each of the intake ports are stock!

Heres a shot of my Stage 3 LT4 heads.



There is as much as a 1/4 inch of materal on each intake port to be removed.
So im getting my entire LT4 intake port matched to my TB and Heads and polishing the entire inside.


Any guesses on power to be gained? I mean the big TB into thoose small 52mm holes has to be causing some restriction. And the intake not matching the heads has to be creating some kind of power robbing air swirl...

Right?

dheck

iTrader: (9)

I would imagine you will see some gains but don't expect HUGE gains. It is a good idea to have it done though. Every little bit helps.

Mike TexaSS

iTrader: (2)

TTT any guesses on HP gain?

The Motor is a Lt4 Hot cammed 409 cid

Beast96Z

iTrader: (21)

With no more cam than you have, I doubt the gains will be that much. A hot cam in a 409 is like a stock cam in a 350. Regardless it needs to be done. The tirbulence could be robing you of some good HP. Only way to find out is to do it.

Spinmonster

It will be evident high up in RPM.

Damian

iTrader: (89)

You mind as well wear a thong if you run a Hotcam in a 409 ci


josh