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8upZR1 · 09-02-2007

I like the idea of solids. It wouldn't require too much work to fab the lifters. Shimming the deal for proper clearance would be a pain but only cause its 32 valves, and if you have to play with it a few times, thats 64, or 128 or just a headache, but do able. Also you dont need absolute perfect lash for street motor. Once its done though, it aint gonna change like a 16V 350. As for the knock issue, it can be turned off or tuned to be not so sensitive. I wouldn't rev my LT5 to 8K on a regular extended period with stock lifters. No one seems to have a clue about which audi lifters work so the solids seem to be a logical choice. Also with solids you could probably rev way past 8K & you would know that its OK.

After valvetrain what is the limiting factor for these motors in terms of RPM potential?

As for milling the heads for more compression, I have been told by a reputable LT5 specialist that it is worthwhile but that there is a limit cause the timing chain tensioner can't take up slack properly when you mill the head more than 10 thousandths or something like that.

09-02-2007	#6
8upZR1 Join Date: Jun 2006 Location: Thunderbolt, Ga. Posts: 253	Re: Thoughts on compression/build I like the idea of solids. It wouldn't require too much work to fab the lifters. Shimming the deal for proper clearance would be a pain but only cause its 32 valves, and if you have to play with it a few times, thats 64, or 128 or just a headache, but do able. Also you dont need absolute perfect lash for street motor. Once its done though, it aint gonna change like a 16V 350. As for the knock issue, it can be turned off or tuned to be not so sensitive. I wouldn't rev my LT5 to 8K on a regular extended period with stock lifters. No one seems to have a clue about which audi lifters work so the solids seem to be a logical choice. Also with solids you could probably rev way past 8K & you would know that its OK. After valvetrain what is the limiting factor for these motors in terms of RPM potential? As for milling the heads for more compression, I have been told by a reputable LT5 specialist that it is worthwhile but that there is a limit cause the timing chain tensioner can't take up slack properly when you mill the head more than 10 thousandths or something like that.