Let's see...
So what we have here is a change in firing order
between cylinders 4&7 and cylinders 3&2
Original firing order is 1-8-4-3-6-5-7-2
New firing order is 1-8-7-2-6-5-4-3
Something is very familiar about that firing order......but what is it?
Oh yes...its the firing order for the LS1
lets see what the Chevrolet engineers have to say why the change took place
Source:
http://www.hotrod.com/techarticles/c...iew/index.html
Quote:
The crankshaft remains a ductile cast-iron casting, yet offers wider rolled fillets for additional strength. The most significant change to the crank is in the new firing order (1-8-7-2-6-5-4-3), which will probably qualify as the next new Chevy trivia question. Juriga claims a slight improvement in crankshaft balance and stress while moving the adjacent firing cylinders from 5 and 7 to 1 and 3. The crankshaft is also internally balanced to minimize bending forces.
In case you dont know, the SBC(and other V8's using that firing order)
allways had an Achilles heal, its the fact that there are 2 adjacent cylinders (5&7) that fire one after the other, before the intfoduction of multi point fuel injection cyl 7 was allways a "lean Burner"
as cyl 5 whould steal from it's charge
So what have we done here?.....we moved the adjacent cylinders from 5&7 to 1&3
At least theoreticly, I can't see any possable improvments in the power band.
