- Joined
- Jul 16, 2009
- Location
- Monterey/Falun
I made some overall adjustments when throwing the car back together. I verified tdc again and checked the piston protrusion on all 8 cylinders, they all matched perfectly. I threw the Corvette heads on and from what I gather the compression is about 10.2:1 on the engine now, the heads do not flow as well on the intake side but from what I can gather they flow a tad better on the exhaust. Also one thing to note from my research there are claims out there that the casting is better on the passenger car heads and they are less prone to cracking. I do not know if this is entirely true but I will say that the casting does look nicer. I also verified yet again that the timing offset is incorrect. When I checked it again the timing was off about 6 degrees advanced at idle. I have found with the past three times I've mechanically timed the engines and verified it that is has been anywhere between 5-6 degrees off when comparing it to the timing on tuner studio which was registering around 15 degrees at idle and the timing light was showing 21. So the car does feel a little happier with the timing set properly even without the meth kit triggering at around 10psi. I also switched to a ls9 map sensor located where the EGR tube used to go on my ls1 intake. I was noticing a issue where the watermeth would allow contamination on the map sensor when it was in the stock location at the back of the manifold. Either way the car is running and driving and hopefully I will be able to have it at the strip this weekend.