headed-ws6

iTrader: (34)

I recently installed a set of 6.0 lq9 heads on my 2001 TA I also had them port and polished. I have heard that they lower the compression and there is little or no gain. Would I see a gain since I port and polished them?

Ls2Sonoma

iTrader: (4)

thats a pretty broad question.... depends who ported them and how much

headed-ws6

iTrader: (34)

They were ported by a local shop. I had a five angle valve job done if that helps any

N4cer

iTrader: (11)

You dropped your compression a lot. I see no way you could get a gain from them.

headed-ws6

iTrader: (34)

I still have the 241's if I got the specs for a stage 3 Port and Polish would I see any major gains?

ArcticZ28

iTrader: (14)

They lower the compression and generally aren't worth porting and polishing unless your engine is set up for higher compression. I'd keep the 241's and have them p and p'ed.

Ls2Sonoma

iTrader: (4)

5 angle valve job? i sure hope they installed fatte seats, there isnt that much room for anymore than the 3 major angles.....

a simple port and polish will most likely show the most gain in the higher rpm, but consequentally your low end torque could suffer

mikep2002

iTrader: (10)

Hey my FI motor would love to see those LQ9 heads if interested in selling.

headed-ws6

iTrader: (34)

If I can get the specs to get a stage 3 p & p on my 241's I would sell the Lq9 heads.

Studytime

iTrader: (15)

I'd look for soemthing more conservative than a stage III head for your car.

Ben T.

headed-ws6

iTrader: (34)

What would you go with Ben? Im looking for a hopefully a solid 15-20 hp if thats even possible with the 241's. What would I have to do to get this out of the 241's?

ArcticZ28

iTrader: (14)

There are no certain specs to a p and p. It all depends on the person/company that is doing it. One person's "stage 2" job could be another's "stage 1.5xr2". It's all just naming conventions for how much porting is done. The best thing to do is call up a sponsor and ask them which stage p and p would best match your setup.

headed-ws6

iTrader: (34)

Would getting them milled help with Hp gains or just give me a higher CR?

ArcticZ28

iTrader: (14)

Both, but starting with something that isn't setup for your app and then trying to make it work is never a good manner of finding hp. If I were you, I'd start by spec'ing out the cam I wanted first. Then, I'd figure out which heads flowed well where you needed it the most.