flyboy wrote:
Cool. So, what are some of the specifics other than it's the same block and a cast crank, I think. I've been following your progress, but am hazy on what's all in there. Heads, pistons, rods, deck height, etc. What are those cuts at 4 and 8 o-clock the top of the cylinders for?

biggrizzly wrote:
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flyboy wrote:
Cool. So, what are some of the specifics other than it's the same block and a cast crank, I think. I've been following your progress, but am hazy on what's all in there. Heads, pistons, rods, deck height, etc. What are those cuts at 4 and 8 o-clock the top of the cylinders for?

Well that didn't take long for someone to pick up on the chamfering at the cylinders. As it was explained to me; some heads/ like Lt1 heads have a larger combustion chamber than cylinder. These reliefs allow a smoother transition of intake and exhaust gasses. Most times when the valves are unshrouded and then the heads bolted on the block without the reliefs like have done to mine, the gasses hit that edge and cause turbulence.

Durango_Boy wrote:
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biggrizzly wrote:
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flyboy wrote:
Cool. So, what are some of the specifics other than it's the same block and a cast crank, I think. I've been following your progress, but am hazy on what's all in there. Heads, pistons, rods, deck height, etc. What are those cuts at 4 and 8 o-clock the top of the cylinders for?

Well that didn't take long for someone to pick up on the chamfering at the cylinders. As it was explained to me; some heads/ like Lt1 heads have a larger combustion chamber than cylinder. These reliefs allow a smoother transition of intake and exhaust gasses. Most times when the valves are unshrouded and then the heads bolted on the block without the reliefs like have done to mine, the gasses hit that edge and cause turbulence.

Someone please correct me if I'm wrong but I thought some turbulence in the combustion chamber was a good thing. The more turbulence, the better the fuel and air mix, creating a more efficient burn.

pianoguy wrote:
Sweet! Hope you can get a video on the dyno - I sure wish I had done that.

biggrizzly wrote:
I also have a smaller than stock base circle cam installed. I suppose this saved them a little grinding. I don't know too much about that though.

corvetteronw wrote:
I am jealous. That looks great!
Are you doing anything to your drive train to beef it up for the extra power?

biggrizzly wrote:
oh and a polished driveshaft!

biggrizzly wrote:
You know... I have no idea what kind of power this thing will actually make. I can tell when I talk to Jerry about power he kind of says that I will be very happy with the how this engine will perform but is hesitant to quote any numbers at this time. He is really about the whole package with a high priority of reliability. He thinks all of us internet car nuts focus too much on flow numbers and dyno sheets. He's probably correct. So, I'm not even speculating on the actual power and torque at this point and just cross my fingers we get some good numbers after its in the car and Mick sets the tune for me.