Y-Block Firing order!


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By kidcourier - 15 Years Ago
      Just received my April issue of Hot Rod Mag.,has an article on Fords new 5.0 Modular motor that's replacing the 4.6,wouldn't be a big deal but Ford saw fit to use the Y-Block firing order on their new 5.0 that's rated at 412HP/385 Torque.Wonder what this babys going to sound like,a super healthy 312? Kid
By mctim64 - 15 Years Ago
When all the scrub guys started going with the Y firing order (the 4/7 swap) they say it is good for 10 more HP in the high rpm range, it just takes the slow learners a little longer than the rest of us.
By BIGREDTODD - 15 Years Ago
mctim64 (2/11/2010)
When all the scrub guys started going with the Y firing order (the 4/7 swap) they say it is good for 10 more HP in the high rpm range, it just takes the slow learners a little longer than the rest of us.

Does that mean if we reversed the 4/7 swap our Y-blocks would all begin to have unexplainable oil leaks? (I can't really make any jokes about cracked heads, can ITongue)

By Flying Jester - 15 Years Ago
I noticed how smooth the Y-Block sounds, no matter what it's doing. I'm coming to think of it as a more suave windsorBigGrin



Is this with the new Mod engines, or all Mod eights?



...and now a crazy plan of converting the Y-Block to DOHC using Mod V8 parts pops into my mind...
By GREENBIRD56 - 15 Years Ago
The flattie and the Y-block have used the same firing order - and now that new 5.0L twin cam motor will get it too. Flatheads used it because it was easier on crankshafts (fewer mains in the block) - made lower "mean" torsional stresses (I think). That would equate to lower torsional deflections - and a stiffer mechanical system harmonicwise.

It has to do with which cylinders are "making power" along the length of the shaft - and the placement of the ones "consuming power" (compressing air). Using the example of a (very) simple two cylinder engine - part of the power made by each cylinder is going to be used compressing the other. On the v8 it isn't quite that simple - but that's the principle anyway.

I never could figure out why Ford didn't stick with that design all the way through - there must have been some cost reason.....

By charliemccraney - 15 Years Ago
I think the 5.0 Cammer will be a nice modern engine to swap into an older ride.



http://bradbarnett.net/mustangs/shows/sema03/mustangspecs.htm
By Flying Jester - 15 Years Ago
I always assumed the reason that Ford changed the order was that it made more sense with the staggered exhaust ports and stacked intake ports, but not so much with even exhaust and intake like the Windsor.
By PF Arcand - 15 Years Ago
The Y-Block firing order is the same as the original Flat head V-8. It's likely that the later engineering group chose the regular Windsor firing order (unfortunately) because G.M.'s SBC engine was using it.
By Flying Jester - 15 Years Ago
Isn't the Y firing order the same as the BB chevy?
By aussiebill - 15 Years Ago
Flying Jester (2/17/2010)
Isn't the Y firing order the same as the BB chevy?

Wash your mouth out with soap!!Tongue

By Ted - 15 Years Ago
Flying Jester (2/17/2010)
Isn't the Y firing order the same as the BB chevy?
Only when the scrub camshaft has the 4X7 swap.   This is worth a few horsepower on both the small and big block scrub engines.

Here’s a past discussion on firing orders.

http://www.y-blocksforever.com/forums/Topic4543-6-1.aspx

By bloodyknucklehill - 15 Years Ago
aussiebill (2/17/2010)
Flying Jester (2/17/2010)
Isn't the Y firing order the same as the BB chevy?

Wash your mouth out with soap!!Tongue

That was hilarious..

By PF Arcand - 15 Years Ago
I gotta agree with Dustin, Bill's response had me giggling for 5 minutes!...
By Flying Jester - 15 Years Ago
aussiebill (2/17/2010)
Flying Jester (2/17/2010)
Isn't the Y firing order the same as the BB chevy?




Wash your mouth out with soap!!Tongue




...In that case:



Didn't those Chevy fools steal the firing order from the tried and true Y-Block, because they had to admit it was superior?
By charliemccraney - 15 Years Ago
[b]Flying Jester (2/26/2010)



...In that case:



Didn't those Chevy fools steal the firing order from the tried and true Y-Block, because they had to admit it was superior?




That assumes they're smart enough to realize it's the same firing order. They have to be able to convert the Chevy numbering scheme to that of the Ford.