What do you mean “correct the firing order”? Which order is incorrect, the standard Ford, the HO order, or both? And how would help.Iron heads do have their advantages for sure...much more resistant to blowing head gaskets and to staying straight when they do...but even so, you have better iron head options than old 351W heads anyway....GT40P heads from an explorer are dirt cheap and iron, flow well from the factory and better if you do a bit of work to them.
Personally for a SBF I always wanted to swap on some LS1 heads and run a custom cam to correct the firing order. More because building cross-make frankenstein engines is fun for me...similar to my 2.3L Ford block and Volvo head engine...not that it is any way efficient or a good use of time and/or money.
What do you mean “correct the firing order”? Which order is incorrect, the standard Ford, the HO order, or both? And how would help.
Yeah but my long blocks built for 2000HP and I am only using 3/4 of it. Granted its just an off the shelf GM 6.0 LQ iron block bored and stroked but even the little aluminum LS1 can do 1000. Really wanna piss someone off you go spend $600 on a JY 5.3 then spend another $600 in forged pistons and new rings, $1200 for an ebay turbo kit and you now have a motor that makes 1000hp all day long without even changing the cam LOLThe heads do not care what the firing order is in. The crank, intake and NHV might. The firing order has to match the crank and camshaft(s).
The Ford HO firing order switched two cylinders, and it matched the standard Chevy firing order.
But before we get into if the cylinders are numbered the same so you can see how the LS and HO compare, I have to wonder - why do this?
By the time the modifications are made to the block, (if it is even the same bore spacing), that will be a lot of money making great heads fit a much weaker block. It is stupefying how much power @LaserSVT puts through an ls block in a Vette. I doubt a 351 block would stand that level of boosted power for more than two trips to the store. Heresy alert - it would be better to swap an entire LS long block engine in.
Now if someone were to apply as much of the LS head’s design into Windsor compatible castings, I would strongly consider them and a stronger block.
Ford 5.0L / 302 HO and 351W Firing Order | GTSparkplugs
This EZ to read firing order for the Ford 302 HO and 351W engines. Includes distributor rotation and wire locationswww.gtsparkplugs.com
Yeah but my long blocks built for 2000HP and I am only using 3/4 of it. Granted its just an off the shelf GM 6.0 LQ iron block bored and stroked but even the little aluminum LS1 can do 1000. Really wanna piss someone off you go spend $600 on a JY 5.3 then spend another $600 in forged pistons and new rings, $1200 for an ebay turbo kit and you now have a motor that makes 1000hp all day long without even changing the cam LOL
oddly GMs weakest LS engine was the one that made the most power stock. Damn LS7s seem to fall apart at 4 digits.
I love my Fords, owned way too many to count but the LS/LQ engines are a marvel for how cheap and simple they are.
Well, the reasoning behind doing the head swap is its dirt cheap and fun....you can find any number of LS heads for $100 a pair that someone is upgrading to later LS-series heads. As to whether its easier to just swap an entire LS engine of whatever type...absolutely, but where is the fun in doing things the easy way? I enjoy the Folvo 2.3T engine I built because the project itself was fun...not because the end result is any better than a turbo Duratec 2.3L(certainly not from a weight perspective), So yep, I would be much more likely to build a hybrid engine than to just use an LS engineThe heads do not care what the firing order is in. The crank, intake and NHV might. The firing order has to match the crank and camshaft(s).
The Ford HO firing order switched two cylinders, and it matched the standard Chevy firing order.
But before we get into if the cylinders are numbered the same so you can see how the LS and HO compare, I have to wonder - why do this?
By the time the modifications are made to the block, (if it is even the same bore spacing), that will be a lot of money making great heads fit a much weaker block. It is stupefying how much power @LaserSVT puts through an ls block in a Vette. I doubt a 351 block would stand that level of boosted power for more than two trips to the store. Heresy alert - it would be better to swap an entire LS long block engine in.
Now if someone were to apply as much of the LS head’s design into Windsor compatible castings, I would strongly consider them and a stronger block.
Ford 5.0L / 302 HO and 351W Firing Order | GTSparkplugs
This EZ to read firing order for the Ford 302 HO and 351W engines. Includes distributor rotation and wire locationswww.gtsparkplugs.com
The used heads might be cheap. Please keep a running total and let us know how much it costs to get it together and running.!Well, the reasoning behind doing the head swap is its dirt cheap and fun....you can find any number of LS heads for $100 a pair that someone is upgrading to later LS-series heads. As to whether its easier to just swap an entire LS engine of whatever type...absolutely, but where is the fun in doing things the easy way? I enjoy the Folvo 2.3T engine I built because the project itself was fun...not because the end result is any better than a turbo Duratec 2.3L(certainly not from a weight perspective), So yep, I would be much more likely to build a hybrid engine than to just use an LS engine
I skimmed thru this thread but..
The SBF HO firing order and the LS firing order are the same, the only difference is what cylinder is fired first...
I often grab LS wiring harnesses and repin them for SBF engines when I do coil conversions.
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