WILL I BE ALRIGHT IF I KEEP THE BOTTOM END STOCK AND GET A CAM ABOVE 560 LIFT

 

I have heads, that have been milled .030, and my cam is at .579 lift.

But I have no comment as if your will be alright. Mine is solid roller by the way, with 228 duration.

 

Always check P to V Clearance. Guessing will get you into trouble.. For some reason our cars are not all exactly the same.. If you watch the boards many have had mishaps with guessing..

 

Does anywhere detail, how to check for clearance, I just stuck 2 rods in and turned the motor over by hand????

 

Guys,

It's not the lift that causes PV problems it's the duration and the ICL and ECL (LSA and advance) The valve is closest to the piston at the exhaust closing point and intake opening point. That's when the valve is only open a very tiny bit. Going with a cam like 230/230 on a 110LSA is going to run into trouble with P/V, now you can go that high like the LGX5 or whatever it is because the LSA is so high. If you ran a 224/224 .700/.700 on 114LSA you would have more P/V than a 236/236 .550/.550 on 110LSA.

Bret

 

IS IT POSIIBLE TO TAKE A SET OF TEA 5.7 HEADS AND MILL THEM SLIGHTLY TO ACHIEVE HIGHER COMPRESSION FOR MORE POWER,OR IS THIS NOT POSSIBLE DUE TO PISTON/VALVE CLEARANCE?

 

depends on what cam you are planning on running, and whether or not your bottom end is still at stock clearance specs.

there are a lot of guys posting about milling the 5.7 casting up around .030 to end up with 10.8:1 and up CR, and using cams with up to and over a .580 lift. In my opinion, I would clay the p2v clearance on anything above .560 lift.