Why no ls motors?

[jsf74]

It seems to me the future of the sbc lies with the ls famly of motors but you rarely see them at the track. The cost has come way down and the power potential of the factory parts is great. The factory 6.0 with the heads cleaned up and a cam with stock pistons will put out 500 plus easy. Any good reasons other than the initial cost?

[stockcar5]

many classes require cast iron heads. only ls motor i know of with cast heads is the 1999-2000 6.0 truck engines.

[racin6mod]

I think your correct and I've thought about building an ls for my modified.once the headers ,dist., and crank shaft coupler are easier to come by than it will be the motor of choice in dirt cars.

[jsf74]

If your starting with a new setup I think it would be a smart move. Get a head start on the comp. Easy to stroke too for 400 plus inches. Anyone out there run one?

[usafracer]

Baldwin racing is leading the pack on the LS motors. Google them or do a search on here.

[jsf74]

Yeah but they start at 17500. I'm looking for some more grass roots style of builds.

[parrot69777]

Problem with going LS......it will make everything else obsolete.

[stockcar5]

make sure your rules allow non 23 degree heads also if your going to switch to an ls motor.

[jsf74]

I'm running under ump rules so it's kind of a free for all other than a iron block. what deg are the l92 heads?

[stockcar5]

most ls motors are 15 degree. some of the real high perf stuff is 11 and 12 degree like the c5r heads and the ls7 heads.

[jic93]

the other thing is the cost of puting a distributor in it ... most rules outlaw the coil per plug system toooooo afraid of traction control .... but what is a distributor anymore but a pickup coil feeding an ignition box ?

now thinking about that isnt a crank sensor the same thing ?

[jsf74]

Yeah and I'm pretty sure their legal too. I could have different timing curves with the box for different track conditions. Just weighing all my options right now and seeing where I want to go.

[hogracer3d]

World makes a gen 1 type block that will take the LS head, that would be the way to go I think.

You get the vast choices for the gen 1 internals with the LS head on top

http://www.worldcastings.com/products/motown-ls-iron-block.html

[9modified]

I would love to see LS motors, you can get a used one and install aftermarket parts and make good power for under 4 grand . It would be pricey at first but would be a cheaper in the long run. In the next few years this will happen anyway might as well get a jump on it.

[jsf74]

That is what I'm thinking. I'm still going to run my old sbc next year but a ls is in the works for 2013 for sure.