I own 3 LS motors and an 8.1 motor, and have never had piston slap issues on any of them. 2001-101K miles, 2003-166K miles, 2006-83K miles & 2006 8.1-52K miles......It must not be that common?? Not here to defend GM or bash any other makes, but my LS motors have been problem free, on the 03, it needed an intake manifold gasket replaced, thats it! My 99 454 had piston slap but that was a whole different motor of course....it piston slapped for 213K miles before I sold it.

 

Ford Flathead: 1-5-4-8-6-3-7-2
Ford 302: 1-5-4-2-6-3-7-8
Ford 351/4.6/5.4/302HO: 1-3-7-2-6-5-4-8
Ford 5.0 Modular: 1-5-4-8-6-3-7-2

That's 3 different 90 degree V8 firing orders, BTW.

 

The cathedral port 241/243s in no way resemble L92/LS3/LS7 intake ports. I'd be curious to see those ported 241 numbers, because a touch over 300 cfm doesn't come close to NASCAR requirements.

So basically you're out of touch with reality.

 

The worst engine i ever had was the 351 M, which was in a 78 Ford -1/2 ton, Guttless and sucked alot of gas

 

I really liked my 300/6
which I drove for 22years, and love my 2008 5.4 2 valve ( in an E350). But, time will tell. People are always talking about how gutless they are but I just dont understand that at all. I've concluded that they just don't rev them enough.

 

i would have to say without help all the ford trucks are gutless. i have a v-10 ex now and yeah its gutless compared to my 04 hemi and my 05 cummins and the chevy 6.0 i drive at work yeah the fords are pretty gutless but i havent driven a new new ford we have and 08 5.4 for work trucks to and they are yep gutless but thats the newest ive driven sorry to bash ford here but just stating my personal opinion.

 

worst ford enigne ever the 2.5l hsc. second in line the 2.5l probe engine(really mazada crap).the 6.4 is currently there worst engine followed by a 5.4 3v.
the best 260,289,302,4.6(2v and 4v)
the one I liek the best are the 2v 4.6 and sadlly I hate to say a 6.0.

 

You are all NUTs!!!! 10HP Kohler (K241) most awesome of all time. OK that was a little tongue in cheek. But, until Honda came along it was hard to beat. REALLY!!!!!! How could anyone think that the GM 350 Diesel wasn't the worst mass produced engine of all time. Broken Crankshafts!!! Who ever heard of a broken crank in a passenger car? Especially one driven by little old ladies!!!

 

I am afraid I'll have to be the one to shoot you down here. I've got a 2011 F-150 FX4 with the 5.0L V8 and its far from gutless. It's easily got more juice than my friends Hemi Dodge. As a matter of the fact...I can comfortable say its probably the quickest out of the factory 1/2 ton I've ever driven. The only two that I've driven and personally feel would run a race with it is the 6.2L Powered Silverado and the 5.7L Powered Tundra. But really as of any Ford truck made as of 2011 a newer...You would be crazy to say its underpowered.

As for the pre-2011 models...

Well for almost a decade the 5.4L and 4.6L were Fords weak spot in their 1/2 tons. Although I still will argue that the 5.4L towed better than any 5.3L Chevy I ever drove. The 5.3L Chevy may have generally been faster without a trailer hooked up...But the 5.4L handled extra weight alot better. But the Hemi's, Titans, and Tundra's were always quicker than the 5.4L F-150's.

The V-10's...I don't have to much experience with the V-10's honestly...I have driven a few...But I've never towed any weight with one. Back in highschool my friend had a 1999 F-250 Crew Cab 4X4 with a V-10 and his truck was infact pretty gutless, granted that it had over 200,000 hard worked miles on it. It was slow and it sucked gas about 9mpg avarage. But he drove the living hell out of it and it never faulterd. Never had any issues with it...He traded it in on a Cummins Dodge a few years back, and to this day he wish's he had his old V-10 back...His Cummin's Dodge has proven to be a huge expensive headache.

I drove his V-10 on occasion and as I said it was gutless...I don't know if you have ever driven a 2005+ V-10?...But that was the year they went from 2v to 3v design...I did test drive a new 3v V-10 back in 2006 and it was quite a bit more powerful than my buddies old 2v V-10.

I can carry this all the way back the 1990s...

My first pickup that I got for myself in highscool was a 1990 F-150 2WD XLT Lariat with the 302 V8. At the time another of my friends owned a 1993 Silverado with the TBI 350 V8. One day he and I went to the track to see who was quicker down the 1/4 mile and I beat him by a half second with a 4mph higher trap speed...''For the record my old 1990 also outran my friends F-250 with the V-10.

 

How about the 444 Cummins or any ACERT Cat engine? The ACERT Cats were such a miserable failure that Caterpilar got out of the heavy truck market altogether!

 

Crosley Hot Shots had an engine block made out of plates brazed together. Bad idea!

 

I had an 05 F150 with the 4.6L gutless wonder that wouldnt pull your hat off your head. It had the death rattle on a cold start at like 30,000 miles. That was a pitiful excuse for a V8. I used to have a 68 f100 with the 351W and now i have a 74 f100 with a 302 and they will sqaull tires all day long.

 

My brother has a cummings in his 05 1 ton Dodge, has over 300000 mi never been rebuilt.He spent all his money on tranny.
I've drove about every ford engine in the last 25 years,i like em all!!!!!!!!!!
Don't forget the 4 cly model A,also easey to work on.

 

The 255 was in 1980 and 1981 Fox Mustangs was considered one of the worst engine ever built.

8-1/2 years has got to be one of the longest threads. lol

 

Too many posts to read through but I would hope someone mentioned the Chevy 262 and 267 from the smog era. They are related to the classic 350 and that motor, along with it's 4" bore cousins the 327 and 302 are among some of the best engines out there.

A couple of Fords off the top of my head would be the 300 I6 and the 5.0 Windsor. 1 it's very compact and fits into anything and 2 you can make a bazzilion HP with one provided you address the block. However with a stock block and EFI you can make 350hp out of 302ci and stick it into your daily driver. Pretty good for an old school 2v OHV engine.

Back to GM, their LS motors are killer and definitely in the running for "Best".