lsjion ported head
Senior Member
Joined: 09-07-09
Posts: 862
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From: Blue Earth MN
wow how did I miss all this, prices can be had if pm'd
also, to the person saying they were told porting the exhaust side is dumb....that's a fail, on the lsj it's very benificial to these engines, gm did it with the gmr head
One of my customers gained 20 wph over an already ported head,
I don't currently have one finished, well i do but it's reserved for usmc, I can have one done in no time if interested
also, to the person saying they were told porting the exhaust side is dumb....that's a fail, on the lsj it's very benificial to these engines, gm did it with the gmr head
One of my customers gained 20 wph over an already ported head,
I don't currently have one finished, well i do but it's reserved for usmc, I can have one done in no time if interested
If I were to buy this ported head, how will the tune be? I mean do you have exact numbers of cfm of the new ported head that would define how aggresive the tune will be? And how much is neccessary to tune? Did you saw a big difference in response and power (untuned vs tuned)?
Senior Member
Joined: 12-31-06
Posts: 686
Likes: 4
From: troy oh
with these heads a tune is not necessary, due to the fact the intake is untouched.
However with a polished combustion chamber you will notice you can squeeze a few degrees more timing out of it.
you will also see a 3-4 lb boost
However with a polished combustion chamber you will notice you can squeeze a few degrees more timing out of it.
you will also see a 3-4 lb boost
Last edited by lsjion; May 10, 2011 at 12:33 AM. Reason: Automerged Doublepost
If I already ported my throttle body and supercharge, I would need a tune