i sent you a pm? and thanks!

 

yes they are exactly 64.45cc

 

.020" will get you a 62 cc chamber, so just a shade less then that. I've got a .020" shave with a .040" cometic gasket and I'm just under 11 to 1...

 

different question but along the same lines, whats the max you can mill 243s or any LS head for that fact? ive searched alot and found one or two that have done .050 & .055 on 862s and also mentioned anything past that might run into intake fitment problems, but then ive read the plastic intake is pretty forgiving..? so who knows of actual info and not hearsay about max milling and fitments..?

 

My buddy went .060" on a set of L92's. I've heard of .045-.050" on cathedral ports.

 

I did 0.030- on some 243's- and dint have any intake fitment problems ' I might. Go- 0.040 or more if fitments permits it.

 

Just make sure if you have you guy mill the heads, that he mills the same amount of material off the intake side of the heads, your intake will fit just fit. Hacking .050+ material off a head though with any sizable cam I'd be worried about PTV clearance unless you're willing to flycut the pistons

 

umha . . . that's a negative . . .

If you're getting your heads milled, the head side is the only side that gets milled.

 

I didn't say it didn't need custom built diamond pistons But it actually has some compression on what was a lq4 block... The original plan was to fly cut, but it still didn't clear. Which is where I got my short block and the one I owned (that was at the machine shop) got punched for the diamonds.

 

I cut .050" off my 862's. had a couple braket issues, but no big deal. had to bolt the intake down nice and slow, and in a circle pattern, then tq to spec. depending on the cc of a lq4 piston, it's either 10.75-10.8 to 1.