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This is the engine build thread for my Project "The Donation Wagon" with a low-mid budget but well assembled goal.
So to start off I've never built or owned an LS platform motor. Driven plenty at work and I have built plenty of SBC engines over the years so not shy to jump in on one. I am starting with a 6.0 LQ4 from (what I was told) a 2005 Chevy 2500HD It came with the matching 4L80E so the story from the seller seems likely. Supposed to have a little over 89K on it and I paid $500 so lots of room to work with. I have already snagged a 2005 GTO oil pan & intake with fuel rails and injectors. My original goal was around 400HP but I may be convinced to go a little higher as I would like to enjoy the car. Goal is fun and reliable. From what I have read I can get to 400HP with a cam, springs and tune fairly easily. I know if I go any bigger I will need a stall which is not out of the question. I came up with the 400HP+ based off of my 14 Dodge 5.7 which is about 400HP stock and it runs great in a truck so in a wagon it should be even better. I don't plan on tubbing the wagon so will be running 17x7 rims at this point in time (tire size still to be determined).
Question 1: I want to go cable Throttle body and I know the GTO intake opening is 91.8mm. What would be a good TB to run on it? I assume a 92mm will fit?
Question 2: What cam/springs/stall would you recommend for 400-450ish HP? Or other ways/mods to get to that goal zone?
Thanks to everyone who has advice and I hope the following build will be informative or at the very least entertaining!
Miles
So to start off I've never built or owned an LS platform motor. Driven plenty at work and I have built plenty of SBC engines over the years so not shy to jump in on one. I am starting with a 6.0 LQ4 from (what I was told) a 2005 Chevy 2500HD It came with the matching 4L80E so the story from the seller seems likely. Supposed to have a little over 89K on it and I paid $500 so lots of room to work with. I have already snagged a 2005 GTO oil pan & intake with fuel rails and injectors. My original goal was around 400HP but I may be convinced to go a little higher as I would like to enjoy the car. Goal is fun and reliable. From what I have read I can get to 400HP with a cam, springs and tune fairly easily. I know if I go any bigger I will need a stall which is not out of the question. I came up with the 400HP+ based off of my 14 Dodge 5.7 which is about 400HP stock and it runs great in a truck so in a wagon it should be even better. I don't plan on tubbing the wagon so will be running 17x7 rims at this point in time (tire size still to be determined).
Question 1: I want to go cable Throttle body and I know the GTO intake opening is 91.8mm. What would be a good TB to run on it? I assume a 92mm will fit?
Question 2: What cam/springs/stall would you recommend for 400-450ish HP? Or other ways/mods to get to that goal zone?
Thanks to everyone who has advice and I hope the following build will be informative or at the very least entertaining!
Miles
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