What is the HP diff. LS vs. SBC

[user-17438]

If/when I ever build my 4.155" b x 3.00" s = 325" SBC engine, it will be an 8,000 rpm one!

Heck, a little Z-28, 302 will hit 8,000 easy until it floats and then bends it's valves!

And I am pretty sure that there are still a few little-bitty 287" engines that can hit 10,000 rpm up top! .030" over, 283's here.

pdq67

But the LS engine is making power to 8000. Not losing 300hp to turn the rpm like your suggestion.

My die grinder can hit 15,000.. so whats your point?

[SchmidtMotorWorks]

This:
(and it isn't even the canted valve LS head configuration)

https://www.youtube.com/watch?v=aAANGDX_iW0

[user-17438]

This:
(and it isn't even the canted valve LS head configuration)

https://www.youtube.com/watch?v=aAANGDX_iW0

Its amazing how years of engineering make something better. And the old timers will still think a 426 hemi this or dz302 that..

But 1000hp na is good out of an ls

[pdq67]

Then do it this way!

Buy onna Bill Mitchells custom Gen I blocks that the LS- heads can bolt on and then see just how it turns out comparing the old engine to the new one?

I think that it was pretty-much a wash, but please check me here!

I honestly believe that GM screwed the pooch when they didn't put the LS- heads on the old block, but that's just me!

The crank's too tight!
The oil pump pickup is too long! And I don't like the oil pump!
Not enough head bolts OR why did they come out later with 6 instead of the standard 4?

pdq67