Whats involved in doing this?

 

Not doing it while its bolted to the block!

 

uhhh...

 

Porting the head involves grinding and polishing the intake and exhaust ports to increase flow through the port. The LSJ responds better to exhaust porting than it does to inlet porting.

You need to remove the head from the engine and disassemble the head. The object is to shape the port for better air flow and polish to port to minimize the "wall affect".

After the porting the head needs to be washed extremely well to keep from getting the ginding dust into your engine and destroying the bearings, crank and rods.

 

taking off your head and dropping it off at a good machinist and paying the bill.

i think these cnc heads are a complete waste of money. $1000+ for a p&p job when you can get a damn good p&p job by hand for $500-$600. everything flowed and matched etc...

 

It sounds like youd need new valves after this to compensate for the increased size in hole? Larger valves wont fit the indentations in the pistons either, so would diffrent pistens or reworked pistens be needed as well?

And even if you didn't need new valves, youd at least need to relap them...

 

you can add oversized valves, but a P&P doesn't dog the material from around the valve seat. if you go with oversized valves, plan to spend an additional $100-$200 for machine work to properly fit those, that is why most people stick with no valve work on a P&P

 

So I assume swapping the head is probably not an easy process?

 

just 2 bolts

 

I doubt this..., seriously, how hard is it?

 

alldata says 8-10 hours of labor for the dealership to do it