compression change
Thread Starter
Staging Lane
Joined: Aug 2014
Posts: 67
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compression change well guys i've ran into piston availability problem with my 6.0 build. seems that a stock stroke and 6.125 rod makes it hard to find a off the shelf piston at 11:1 compression on a L92 head. I did however find a 11.7 to 1 compression off the shelf piston for my stroke/rods. my question is how would it like 93 octane pump gas with the compression that high?
Im no cam expert, lol. Speed understands them much better than me. i always leave all that to FTI. But if i had question, I would just contact grinder and see what he says. i know for a fact most of them wont just try and sell you one if not needed. My buddy, Lucas walker changed his motor up some, added cubes and compression. Instead of Ed trying to sell him a new cam, he told him it wasnt enough change to warrant a new cam, just to run what he had. I am sure Brian can tell you if it will be fine and will bleed off enough cylinder pressure.
I would think that with a 4000 converter you might be okay if you are conservative on the timing and stick to 93. It is pushing it though. The EFI guys with later intake valve close can and do get away with more, but us carb guys can be more limited with the cams that we run.
If you have a lock up torque converter it will rattle if you lug the engine at low RPM.
You could have your cylinder head guy soften up the combustion chambers and remove a few CCs maybe unshrouding the valves a bit in the combustion chamber.
If you have a lock up torque converter it will rattle if you lug the engine at low RPM.
You could have your cylinder head guy soften up the combustion chambers and remove a few CCs maybe unshrouding the valves a bit in the combustion chamber.
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That is really easy to do before the engine goes together. I have cut many pistons down over the years. I am not saying you should, but I would be tempted to run it and see how it does. I have thought about bumping mine up to 11.25.