What's New? Results 1 to 5 of 5. Thread: lm7 cam tuning. Thread Tools Show Printable Version. The only thing holding me back now is tuning for it after the cam is in, i would really like to get into tuning but dont know if i should pay for someone else to tune it or invest in hp tuners software and learn to tune for my self. Watch video's, read a few tuning books, browse the forum for a while to see if it's something you want to learn. There are a few other parts needed for a LM7 cam swap such as an LS2 timing chain , LS7 spec lifters , LS2 timing chain damper and adapter , as well as.
In general, most LM7 owners will add boost or nitrous before they begin serious cylinder head work. Before we get into the power adders, there are a couple of things to address. Any power will put you well past the limitations of the stock injectors and fuel pump. Plan on upgrading to larger fuel injectors to meet the fuel demands of increased power.
Custom tuning will be required to properly adjust the fuel and ignition timing. Truck manifolds had 1. III car injectors or the shorter Gen.
IV injectors. The connectors are different as well, but adapters and spacers can be used to fit car injectors on an LM7. Keep in mind, the best injectors are fully characterized which helps your tuner maximize idle quality, etc. When running boost, you can use a water-methanol system to supply extra fuel and lower-charge air temps. The factory pump is good to about whp. Many fuel system upgrade options are available. Drop-in fuel pump modules and external pumps are popular.
Other options to maintain or increase pump pressure include electronic voltage controllers and hotwire kits. If you have a power adder, the intake and throttle body can take a backseat for a while longer.
If you are naturally aspirated though, upgrading the intake and throttle body is commonly done before the heads. The factory truck-style manifold has long runners for better low-end torque. Porting the intake is an option and a good value. The F. Truck engine bays also accommodate Tunnel Rams. These trade a little bit of torque down low for more up high—and nothing looks cooler.
Ask your tuner about going with a Speed Density tune. Doing so removes the MAF restriction and will give you a bit more power. A set of forged pistons should be high on your priority list. They have stronger wristpins, thicker ring lands, and the added valve reliefs allow you to run big cams. There are exceptions, but Gen. The LM7 crank was cast but strong. The main reason for going with a stroker forged crank is for the added cubic inches.
The extra cubes bring boost on quicker which means you can use bigger turbos. Performance rotating assemblies are available in many combinations. The blocks have been known to withstand 1, whp with proper machining, racing fuel, and an excellent tune. They were patterned after the TBSS intake. Going with a true dual exhaust is a plus. Best bang for the buck out of everything is a cam swap to one of the Summit Pro LS Stage 1 truck cams.
There are three. One tow cam, one drop in cam for stock springs. Then a. It should have plenty of power stock as the car is light at lbs. Any suggestions? Thanks, Gary. It just slides in. Hopeing for close hs, maybe to the wheel.
You could probably even run a Stage 4 cam. My GMC Yukon, 5. The ticking comes and goes, but the engine has noticeably reduced power from when it was new. We had this car since it was new. What do you recommend doing, and do you know of any reputable shops in Brooklyn, NY to take it to or a reasonably distance away? I need I have a velocity intake with 78lbs injectors mm tbody with long tube headers. I want posi I just haven gotten that rear end stuff yet.
I plan on a dyno chassis tune. Hi folks, I had an Atk HP97 installed in a , crew cab , tow z71 package, rear diff to 1, what would be my next up grade? CPU tuned by computer modulation, ride along flashing, high volume oil pump! Hey Brian I have got the hp97 lm7 also. What other mods were required? Hey there Tahoe LT. Bone stock other than a Super 40 Delta flow muffler and mild tune.
But thats just broken in for. Im worried only about certain modes at this time in its life that will create lets say issues. Was thinking intake manifold, cold air intake and a possible stage 3 tune? Plugs wires and coils. Just a start to see how it reacts? Any thoughts? Can you steer me to a right cam application ,What i have is a 5.
Why does this article say I need to buy LS2 parts timing gear, damper, etc. Is this recommended for a specific cam? I have a gmc with the 5. I have a 07 which is a 08 body style GMC Sierra 5. What is the next step I need to take before I mess anything up and add power. Looking to also upgrade the cam. What other parts do I need to upgrade? I have stock heads, can these be used with a bore and cam?
Does the crank need to be upgraded? What about the torque converter or injectors? This manual contains various Cautions and Notices that you must observe carefully to reduce the risk of personal injury during service or repair.
Also known as Chevy, Chevrolet is a division of General Motors that came to Chevrolet has made some iconic cars over the years and their engines are just as.
Oil pressure drops to zero when engine starts then goes to 60,while driving after warm,pressure drops down V6 vortec engine The engine should have 20 to 30 psi at idle cold and around 50 to 60 psi running down the road. A wiring diagram is a simplified all right pictorial representation of an electrical circuit.
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