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This weekend, I was running in my 12.50 Index class. The weather was good, so I used my first qualifying pass to see what the truck could do after the winters work. The old saying of 100 pounds is worth a tenth, holds true again.
11.9 at 112 mph (left lane).
I think for the foreseeable future, I'll leave this truck the way it is. An 11 second street truck that can be driven anywhere.
Back in October 2024, this engine came undone. I was on a bye run and just past the 1/8th mile, it sounded like rocks in a tea kettle. It had about 30k miles and about 1,000 1/4 mile passes. It was a budget rebuilt 6.0 with cast pistons, stock 243 heads, mild cam. Upon tear down, the valve guides have loads of clearance and I suspect that lead up to the exhaust valve breaking off and then the piston came up and shattered.
The new engine is below. Its got more compression, more head flow and more camshaft. The short block is a LS2 block, LQ4 crank, Molnar Rods, Mahle forged 4032 pistons. Heads are 227 Mamo heads with every upgrade. Cam is 225/229 on a 114 LSA. No idea what its going to run, but I need to stay slower than 11.50s to stay within my class at the dragway. Still using the TBSS intake because I don't want to redo all the intake plumbing. Previous best with the old engine was 11.9s.
If you have been following this thread, I was just going to leave everything alone. In hind sight, I should have torn it down and inspected things before it failed. It gave me so many hints and warnings and I ignored all of them. On the other hand, I got to build something new. Racing starts in the middle of April, so I have 1 month to button this up, do the first start, break in and tune it. Its gonna be tight.