317 heads and camshaft
Thread Starter
On The Tree
Joined: Sep 2004
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317 heads and camshaft i was searching this site and noticed the 6.0l 317 heads flow pretty good compared to the ls1 heads. i just dont want to put to big of cam in lq4. i used a virtual engine calculator. and ran the flow numbers and it said i could atleast get 410hp out of these heads. since these 72cc heads. should i have them shaved port and polished them? i am trying to get the most out them. any suggestions would be helpful. thanks in advance.
Thread Starter
On The Tree
Joined: Sep 2004
Posts: 161
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n/a is what i want to do now. but i am thinking of putting a turbo on it at a later date. but i want the most out of it until then. it will see some highway driving. but i am shooting for atleast 20mpg. with 4l60e trans and 4.10 gears. is this possilbe? if it is a suggestion on a cam would help a lot too.
Originally Posted by m8w6r77
n/a is what i want to do now. but i am thinking of putting a turbo on it at a later date. but i want the most out of it until then. it will see some highway driving. but i am shooting for atleast 20mpg. with 4l60e trans and 4.10 gears. is this possilbe? if it is a suggestion on a cam would help a lot too.
Thread Starter
On The Tree
Joined: Sep 2004
Posts: 161
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are the 317 heads just not that good. should i get a set of 5.3 heads? if so which ones should i get? i have a set of dart pro 1 heads 215 cc 64cc setup for roller cam for a old style 350 that i am trying sell. never been used. just cant seem to move out from under my bed. if i can sell them i can get a decent set of heads. but until then i will have to get something as cheap as i can get.
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TECH Senior Member
Joined: Mar 2004
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From: BFE
You need to make a decision now about the boost. If yes, then set it up for that and make the best out of it. otherwise you'll end up paying twice.
I'm in the process of getting a set of 317s hand ported for my P1SC application on my 370. With my custom cam 210/224 115+1LSA, it will make decent power untill I can get the blower before X-mas.
If you are serious about boost then pick a low duration, tight LSA cam to make the best use of the compresion you'll have. Add a blower on that later for added power, or just change cam at later date. Cams are cheaper to find than heads.
I'm in the process of getting a set of 317s hand ported for my P1SC application on my 370. With my custom cam 210/224 115+1LSA, it will make decent power untill I can get the blower before X-mas.
If you are serious about boost then pick a low duration, tight LSA cam to make the best use of the compresion you'll have. Add a blower on that later for added power, or just change cam at later date. Cams are cheaper to find than heads.
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On The Tree
Joined: Sep 2004
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i was thinking of getting a turbo but not sure as to when i will do it. it i get decent hp/tq number and i am fine with it then i might not go with a turbo at all. if i need a set of 317 heads. i have them already on my 6.0 i got. so i could keep them for a later date right? just have them sent to shop to get them to flow better if i go turbo. i dont mind holding on to them. i have room for them. i dont want this engine to be slug off the line by putting to big of a cam in it.
