Stock Heads?

[natural3800]

How much can I shave my stock heads/ will there be a noticiable difference? Reason is that when I shave my heads on my race engines for my dirt car it has a pretty noticable difference and I have them shaved 30 all the time. Well only once for each head. I was wondering about my stock heads on my little L36 motor. Going to pull the top end apart and make shure everything is good for another 100k. though it would be cool if I could get all I could out of it as well.:rolleyes:

[slow6]

Re: Stock Heads?

I would think on a v8 head you could gain only a max of 19hp.
I would think on a v6 you could only gain a max of 8hp.
(I'm just guessing)
You cant port the combustion chamber areas on the head because
that would substantially lower compression ratio.
http://www.sa-motorsports.com/portdiy/diyport.pdf

[natural3800]

Re: Stock Heads?

No I'm asking how much can I shave off the head to lower the head height. Making the compression ratio go up a little. I was wondering how much I could shave off.

[slow6]

Re: Stock Heads?

http://www.intense-racing.com/Mercha...egory_Code=HCV

the thinner gasket is .015 skinnier than stock, it gives an increase in
0.1:1 cr.
I wouldnt mind shaving mine off a little too!!!!!!!

[natural3800]

Re: Stock Heads?

See I've been thinking about shaving my heads 30 thousands of an inch. Trying to get the stock compression from 9 to at least 9 1/2 or 10(I wish).

[slow6]

Re: Stock Heads?

why didnt they come like that? lol ;)
its not like they are boosted

[Turbo V6 Camaro]

Re: Stock Heads?

stock = 9.4:1

[natural3800]

Re: Stock Heads?

What I am curirous about is how much can I shave them. How much can I take off?

[AZ3.8Camaro]

Re: Stock Heads?

I don't think anyone has done it to find out the maximum.
I took .010 off when I had my heads off.

I have no problems.
You could most likely do more without a problem.
You would have to watch the valve/piston clearance to find out for sure.

[Turbo V6 Camaro]

Re: Stock Heads?

call abbott racing they will know for sure

[natural3800]

Re: Stock Heads?

How can I get ahold of abbott racing? Thanxs for ya'lls advice to.

[slow6]

Re: Stock Heads?

http://www.abbottracingheads.com/gm3800.html

[natural3800]

Re: Stock Heads?

Hey thanxs guys this is what I have been waiting to find out I'll post back when they tell me/ give me the details on what I can do.

[natural3800]

Re: Stock Heads?

Here is their reply

You could mill the stock heads around .025-.030 but the difference in
power
will be very minimal. Honestly it wouldn't be worth all the work
getting
the heads off and back on the car.

-Lance

I replied telling him that I was taking the whole top end off to check the motor over and was looking for that little extra kick.

I think that I will shave them .030 then get that thinner head gasket from intense. Hope everything goes right when I do this.
Thanxs for the advice and help guys.

[Turbo V6 Camaro]

Re: Stock Heads?

Here is their reply

You could mill the stock heads around .025-.030 but the difference in
power
will be very minimal. Honestly it wouldn't be worth all the work
getting
the heads off and back on the car.

-Lance

I replied telling him that I was taking the whole top end off to check the motor over and was looking for that little extra kick.

I think that I will shave them .030 then get that thinner head gasket from intense. Hope everything goes right when I do this.
Thanxs for the advice and help guys.

check your push rod length when you do this may have to get just a bit shorter