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Hey guys, doing yet again another project, been wanting to do a high compression n/a build for awhile. Build is as follows
346ci
dss 6cc dome pistons
brand new gen 4 rods with good bolts
polished crank, King xp bearings,
ported, polished, ls1 valves 862 heads milled .040
holley split race single plane with 4 barrel TB
.040 cometic gaskets
253/261 651/.650 cam 110
5500 stall, 4:10 gear
in my 2700# 70 ss nova
no idea what kinda power it will make, but should be fun
Will you be doing the off set ground crank idea mentioned in the prior thread?
What fuel, transmission, rear gear and which rockers?
Im still doing it yes but it’s on the back burner due to having to hire a lawyer to deal with some issues on my my new house install and my town being @ssholes.
e85, tci th350 with some goodies in it, 4.10 gear, reunion upgraded bushed stock rockers for now
Originally Posted by Stampede4ever
What will be the final compression ratio? Watching this one!
Piston Rings, Gas Nitrided Steel Top, Martensitic Ductile Napier Second, Std. Tension Oil, File Fit for 3.898 in. Bore, 1.2mm, 1.2mm, 3.0mm summit pro series
As soon as these rings get here I’ll be sending it off for balancing. Intake will be here Friday.
Hey guys, doing yet again another project, been wanting to do a high compression n/a build for awhile. Build is as follows
346ci
dss 6cc dome pistons
brand new gen 4 rods with good bolts
polished crank, King xp bearings,
ported, polished, ls1 valves 862 heads milled .040
holley split race single plane with 4 barrel TB
.040 cometic gaskets
253/261 651/.650 cam 110
5500 stall, 4:10 gear
in my 2700# 70 ss nova
no idea what kinda power it will make, but should be fun
Sounds like a good build cwarta. Very similar to mine. I woulda liked to have had a little more compression but ended up at 12:1. But i have a thinner ring pack and very light pistons. My gmpp 243s has been cut a total of .090 and the block .010. The 4cc valve reliefs killed compression a little. I'll be running darths old h/c ls1 camshaft.
Ive got a set of Johnson’s now but I’m going to pick up a set of Morels from Ed when I do the offset ground stroker setup.
Originally Posted by stockA4
Nasty looking Nova I hope get it going soon and drive it often
Thanks man, she’s come a long ways since dad and I bought it for $50 out of a creek bottom
Originally Posted by HioSSilver
Sounds like a good build cwarta. Very similar to mine. I woulda liked to have had a little more compression but ended up at 12:1. But i have a thinner ring pack and very light pistons. My gmpp 243s has been cut a total of .090 and the block .010. The 4cc valve reliefs killed compression a little. I'll be running darths old h/c ls1 camshaft.
Im considering having these cut another 20 before I install them, cheap power.
I just finished porting a did oil pump, tons of areas for improvement in these pumps. Shimmed the by pass to 120# of oil pressure and I’ll be running an external oil pressure regulator in the hopes of negating the oiling issues these pumps have over 5500.
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346 high compression build 
