![]() ![]() I have been since than comparing some of these tables to a 2004 Z06 stock file. My original tuner used a 2002 f-body M6 tune for his baseline template and from what I can see in my tune he did not alter the max torque timing table, IAT spark and ECT spark tables. I do have a new concern regarding the max torque timing table. I have fine tuned my timing table a little more since my last post. I just purchased Master EFI Tuner-GM EFI today and look forward to what that has for material. I use 91 octane (highest up here in Mt 3400ft). I dont have access to a dyno (Montana sucks in some aspects)Ģ004 LS1(LS6 intake, and block) 32,574 miles,Īdvanced Induction 241 219cc High Compression 11:1 SCR / 8.5:1 DCR, 60cc chamberĬustom 4" ram-air intake and 4" SLP MAF with resistor removed,Ģ.5" dual exhaust w/ flo-monster X- pipe.Īgain I didnt log any knock when doing both SD and MAF OL pulls in 4th gear up a big hill(load purposes since this car is 2740 wet) on a back road away from people. I have been just researching lately and noticed some threads on high compression engines needing less timing. I didnt log any knock during OL and CL logs, AFR is 12.5 at torque peak to 12.7 near redline. I have seen Denali's of all years have either LQ4's or LQ9's so you have to check.I have just finished tuning both my VE and MAF in OL. ALL Silverado SS Trucks had LQ9's and I believe ALL Escalades after 2002 got the LQ9 as well. I have seen many Denali’s with LQ4’s actually. NOT all Escalades or Denali’s came with LQ9’s. The 8th digit of the VIN Number will indicate the engine type So if you have a particular transmission requirement it is best to choose it first, then find an engine that was mated to it naturally from the factory. It can be done but it is considered a conversion and not something I offer. The "tune" in the ECM is different as well as the main wiring harness. 4L60's & 4L80's are not electronically interchangeable. You need to understand this if purchasing an engine from me. So, ANY (Truck or SUV) that is a 1500 will get the 4L60, a 2500 chassis will be get the 4L80e. Transmissions were sized to chassis capacities NOT engine horse power ratings. Any LQ4 from an Escalade or Denali will have been mated to a 4L60e or 4L65e as well. Although the LQ9 is the HO (High Output) 6.0L it came in a 1500 chassis. Transmission Considerations: ALL LQ9's came with 4L60e or 4L65e depending on year. IMO, If you are willing to pay the premium for an LQ9 it is cheaper to start with an LQ4 and do either the Z06 Cam Package (375HP & $700) or the SS Cam Package (425HP & $1000). Price Considerations: The LQ9 being a limited production engine often comes with about a $1000 premium over a similar age / mileage LQ4. The LQ9 is a limited production engine and VERY desirable as it is the HO 6.0L and comes with a premium price. The LQ4 piston is dished where as the LQ9 is a flat-top increasing compression to 10:1, and HP to 345 factory. But it is usually missing with a wrecking yard engine. There is a paper sticker applied to the back of the drivers-side head at time of manufacture that indicates the type of engine. The ONLY difference between an LQ4 and LQ9 is the piston! There are NO embossed or etched exterior markings on the block or heads to indicate one over the other. ![]()
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