Milling the Heads

[Begood]

Has anyone done this to boost compression? For us N/A guys this would bump the compression up a little. If you are going to the trouble to pull the heads anyway (cam change, valve job, etc.) it would not be difficult. Any thoughts?

Bill.

 

[Nowwhat]

Has anyone done this to boost compression? For us N/A guys this would bump the compression up a little. If you are going to the trouble to pull the heads anyway (cam change, valve job, etc.) it would not be difficult. Any thoughts?

Bill.

EED just did it to my heads.....yes the comp went up slightly....the gains are minimal..

my motor made 560 fwhp vs the stock 500 but it is also a 8.4l now

 

[Begood]

I knew it would not be a large gain, but as I said if you are that far into the engine why not do it to get some gain.

Bill.

 

[Nowwhat]

I knew it would not be a large gain, but as I said if you are that far into the engine why not do it to get some gain.

Bill.

yep....head work + cam + port matching the intake = nice N/A motor...

 

[RedRamRules]

EED just did it to my heads.....yes the comp went up slightly....the gains are minimal..

my motor made 560 fwhp vs the stock 500 but it is also a 8.4l now

Does this mean that you have Dyno numbers & an summary to post?

I would like to do some head work, I am afraid of the high costs involved, especially since you cant send these heads to just anyone. By porting the heads, do you also work on the intake manifold too?

 

[Silverback]

As long as you have the heads off, match the ports while you are at it. My guess is you would gain close to the same HP as the surfacing of the heads.

And remember, depending on how much you take off the heads, you might have to also mill the intake to match up.

 

[mopower1958]

Bill,Mr Mcandless and I discussed compression when we were taking about building my HEMI. He said you only gain 2 to 3 % by raising compression and then you are limited on driveability on pump gas. You can make more power with less compression and more timing than high compression and retarding the timing. Detonation is a KILLER of pistons and Horsepower. If high octane fuel is available,100+ octane all the time then you could do it, if you drive it on long trips where fuel is 91 to 93 octane I would not do it.

 

[Nowwhat]

Does this mean that you have Dyno numbers & an summary to post?

I would like to do some head work, I am afraid of the high costs involved, especially since you cant send these heads to just anyone. By porting the heads, do you also work on the intake manifold too?

keep in mind Juan ,,,,that in addition to the $$$$...that your heads can be gone for weeks....and weeks....and yes you will need intake work and headers....

 

[mopower1958]

If I were doing it I would put a set of Strikers on it.

 

[RedRamRules]

keep in mind Juan ,,,,that in addition to the $$$$...that your heads can be gone for weeks....and weeks....and yes you will need intake work and headers....

I can live with that Mike, I drive my truck on weekends now, sometimes not for several weeks in between. Hope to see your truck in action soon!

 

[ViperTruck2933]

yep....head work + cam + port matching the intake = nice N/A motor...

Exactly what I am doing. I should have some numbers to post in mid to late March if we get it started on time. :burnout: