Milling the Heads How much?

[Wyrmrider]

been there done that

 

[nm9stheham]

Danged computers... when will they know better than to do everything we tell them to LOL

 

[stixx]

N.E.V.E.R.

 

[69_340_GTS]

...how do I figure out how much to remove from the heads, how do you figure out how much to take from the intake side of the head,...
Pete

I can answer the easy part. On the head milling, you take 0.00095" off the intake surface for every 0.001" you take off the block surface. So, for example if you mill 0.030" off the block/piston side of the head, you need to mill 0.0285" off of the intake side of the head.

 

[MOPAROFFICIAL]

Mill .0048 for every 1 cc on a 360 head, .0053 for every cc on a 318 head.

Head Milling vs.

Have you done a cranking psi test yet?

What were the results?

Those sound like they either have small 360 valves in them or you have a set of 360 heads.
The open chamber 318 heads come out to around 68cc
The open chamber 360 heads come out to around 72cc

If using the 72cc 360 heads, removing 8 cc's would be what I would do.
BUT I would also cc the heads 1st to be sure....then determine the amount to mill.

Start with finding the cast number of the heads, then report back.

Ol Turd made a blanket statement, oops.
The 675 casting 318 head are 68cc's.
All the other late model OPEN chamber heads 'late 70's and early 80's' are about and up to..72cc. Yep, fuggin huge... examples are the #163,#593 smog heads.