L92 Aluminum 6.2L Block

[7LitreC5]

I need to measure how far out of the hole the piston is but I think that I will be at about 11.2:1.

Yes fun for sure. Seeing you are staying NA, what compression are you ending up with?

 

[TODD L GRIFFITH]

I need to measure how far out of the hole the piston is but I think that I will be at about 11.2:1.

I see depends on your negetive deck height. Sounds like you are doing it by the book for sure. Your making me anxious to get going on mine lol! I'm torn right now between NA and possibly adding a D1SC this coming winter. So I may go with the low compression build, don't know. Your numbers are something I'm interested in. Please keep me informed on progress

 

[7LitreC5]

I just did a quick calculation came up with 11.02:1 given:

70cc combustion chambers
-5cc for the piston valve reliefs
.060" compressed head gasket (stock LS7)
4.180 head gasket bore diameter (stock LS7)
-.005 deck height (out of the hole)

I hope to have it running by mid April. I am doing the tuning myself so I'll do some beak in miles while doing drivability tuning.

I have modest goals for this build. If I get 500 rwhp I will be happy. That is what I got with my first (junk) Vortech blower on my stock 346.

 

[TODD L GRIFFITH]

I just did a quick calculation came up with 11.02:1 given:

70cc combustion chambers
-5cc for the piston valve reliefs
.060" compressed head gasket (stock LS7)
4.180 head gasket bore diameter (stock LS7)
-.005 deck height (out of the hole)

I hope to have it running by mid April. I am doing the tuning myself so I'll do some beak in miles while doing drivability tuning.

I have modest goals for this build. If I get 500 rwhp I will be happy. That is what I got with my first (junk) Vortech blower on my stock 346.

11.02:1 is not bad at all. No worries of detonation either. I think you should be at 500rwhp no problem. A stock LS7 usually makes around SAE 450rwhp and 474rwhp with the paper filter removed. A larger cam and headers will get you there.

 

[7LitreC5]

The rest of the parts arrived. The engine should be going together next week. Maybe installation the week after that.