fast01

iTrader: (16)

I just ordered a set of Patriot LS6 style heads, 035 castings (not 243's) w/ 64cc chambers and 2.02/1.57 valves along with their new 225/229 .580/.590 114 cam. In addition, I've got 1.75 ratio rockers on there which will bring the lift #'s to .597/.607. I didn't think to ask while I had them on the phone, but do you think I'll have PTV issues? I'll probably check anyway, but I'm just curious if I should start to prepare myself for some fly cutting. Any opinions would be appreciated!

Z28/2002

iTrader: (27)

Just check it

fast01

iTrader: (16)

I'm certainly going to! I just wanted to see if I should plan for the worst case scenerio....flycut.

MPHmotorsports

iTrader: (18)

I would be shocked if that didn't clear.
You should have plenty of clearence.
Lift is very mininum of P/V clearence.
This is something many people dont realize.
In fact I would get yourself a set of .040 gaskets with that combo and get the Compression up a bit more.
Patriot welds the chamber's to get them to 64 instead of milling them which is great for added clearence.
Have fun with the new power.

njc.corp

it will clear-but always check even if u or anyone thinks or say's it will clear-

JPH

iTrader: (2)

it will clear fine.

rickyracer25

iTrader: (11)

I would call Gunnar at Patriot

Asmodeus

it will clear if installed properly

fast01

iTrader: (16)

Thanks for the replys everyone! I absolutely plan on checking anyway, but I just wanted to see what your opinions were (the experts). As far as the head gasket goes, Patriot suggested using a '99-'01 head gasket set to bump the compression to 10.7:1. Have a happy, safe holiday season!

itslow

iTrader: (4)

Patriot no longer welds the chambers; milling is now the route that's taken to alter chamber volumes.

hammertime

iTrader: (1)

Duration and the intake valve opening & exhaust valve closing points determine PTV clearance. The lift has little to do with it, as the valves are barely off the seats at TDC.

fast01

iTrader: (16)

I understand that the valve events have more to do with PTV clearance than lift does, I should have worded my question different and left out the 1.75:1 thing. I do appreciate the responses though! That's one thing this board is good for, honest, knowledgeable replys. As far as Patriot welding the chambers, it's true that they don't do it anymore. I spoke with them a few days ago and they said they only use the 243 castings now that don't require welding. I ordered the heads from one of their dealers, not from them. The dealer had a few sets of the old 035's (that are welded) on the shelf they were looking to clear out. I couldn't pass up the deal!

P.S.
Please don't ask me where I got them as they are not a sponsor and I don't want to break the rules. Thanks!

MPHmotorsports

iTrader: (18)

I honestly didn't know that as we haven't done any 6.0 heads in a long time from Patriot. If anything we suggest the 243 castings. I learn something new everyday. Thanks for shareing that info.
Edit... Looks like these were the welded castings that are older and on the shelf somewhere.