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I have a built LS6 sitting here and a stock LS2. Is it worth taking the heads and cam from the LS6 and put them in the LS2? Whats involved in making the LS2 a 402? This is all for a camaro race car if that matters on which motor.
the heads on a ls2 motor are ls6 heads. Not sure on cam specs for a ls2 i would think they might be the same or a liittle bigger because the motor is bigger. You need a 4 inch crank to make the ls2 into a 402. Might need bigger rods for the bigger stroke.
The ls6 has cnc'ed 243 heads that have been ported and polished with a 231/234 .643"/.598" 111 LSA cam.
well the ls2 has the ls6 heads minus the sodium-filled valves .. so stock for stock it's really a toss up
... but since the ls6 heads are "done-up", if it were me, i'd go for the ls2 block, swap the heads from the ls6 put the ls2 heads onto the ls6 (sell that entire engine) and put a bigger cam (240-260s seem to be the norm) into the ls2 as well as possibly a nice new crank.
but thats what i'd do.
the LS2 block is a nice piece of work and definitely capable, from what we've seen so far, of handling a very decent amount of power. It's got an increased oil flow and if im not mistaken thicker cylinder walls.
the heads on a ls2 motor are ls6 heads. Not sure on cam specs for a ls2 i would think they might be the same or a liittle bigger because the motor is bigger. You need a 4 inch crank to make the ls2 into a 402. Might need bigger rods for the bigger stroke.
It is a plus, they cool better and are lighter, so there is less valve float. I think he was saying that is one of the differences.
... yes the ls6 had the sodium filled valves (which is a plus), the ls2 ones that even though they are still a 243 casting they no longer sport the same valves.