I'd like to see the size of the valve springs on that engine among other things.

If your last shift from 3-4 is at 4,000 rpms under light throttle, I would consider that to be a little high.

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Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record