C10_cruiser

How'd it work out? I've seen it's talked about as an option to increase compression. Is there any tangible benefit?

G Atsma

Just look at the numbers. By going to a flat top from an 8cc dish, compression goes from 9.5:1 to 10.47:1
If you have the right fuel for the compression, it works out great!
Is there any tangible benefit to increasing compression?? Dumb question, but you be the judge....

1FastBrick

iTrader: (16)

I have done 2 Junk yard style builds and 1 new.

An increase in compression yields more power.

FWI, GM did it in 2005 from the factory with the L33 engine...

C10_cruiser

Thanks. What other mods did you do at the same time? Is it a noticeable upgrade?

1FastBrick

iTrader: (16)

One has 706/862 heads with a used LS2 cam with a TBSS 2500 Stall, The Other has 243's with a used TSP Stage 2 Truck Low lift cam with a Circle-D 3200 Stall. Both used LS6/LS3 Springs.

The New one is fully custom with a Tony MAMO Top End and valvetrain package but its never been run.

C10_cruiser

Ha! Yes I know it's a dumb question I'm just looking for feedback after the fact rather than just the numbers. I'm at a point where it would be pretty easy for me to make this mod I just wonder if it's worth the work on an otherwise pretty stock daily driver motor

gametech

iTrader: (1)

If you believe the 4% per point of compression increase, you would be looking at about 10rwhp on a stock 5.3. Whether that is worth it depends on how much extra work or dollars it will take for you to do it. However, that extra power comes directly from using the fuel more efficiently, which means better fuel economy. Unfortunately, if the added compression makes your engine require premium instead of regular gas, the increased economy would be offset by the higher fuel cost. Even the simplest questions become complicated when you look at them too long.