![]() ![]() In the end I was surprised at how well the stock LQ4 cam did compared to several "torque" cams available in the aftermarket. Horsepower wasn't as big of a concern as this is a big truck that is lifted and running on 35" diameter tires, but I wanted to have more than the stock 454, which wasn't hard considering the stock 454 only made about 230 HP at 3,600 RPM! For analysis I use Pro Racing Sim's DynoSim5.įor my purposes I wanted to have a lot of torque down low and as much or better than the 1991 TBI454 that came stock in my truck. I used this information to compare a bunch of cam profiles that were available in the aftermarket to help me decide if I wanted to do a cam swap or not. This engine is going in my 1991 V3500 Crew Cab. I ended up fully degreeing the stock cam in the 2004 LQ4 I got for my conversion, out of a 2004 GMC XL 2500. So I did a lot of research on the internet to try and find the stock specs, but found that there was some differing information out there on the specs and then they were always incomplete information to be able to fully define the cam profile. Cam is the same as Camaro, Corvette LS1 and LQ9 Cam
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