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LS-Headed 300?

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Gary Lewis

LS-Headed 300?

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Have any of you seen this? https://www.motortrend.com/how-to/300-ford-inline-straight-six-with-ls-head-engine-build/?sm_id=paid%3Asm_id%3Afb%3Amtoo%3A22%3AOOtraffic%3Aarticle%3Am18-65us%3Amt&fbclid=IwAR2-nmMTDBgiupAbOgkKv9ZG-B05uFoGyzGodmqzHm8pjrLX6Zi8ZktHrDs_aem_AWJuBy9MBc88qFX41kC_JRDVT14aFO0gFmk7TL67LexD7IByy4TGp_mc-XP3U5Ak3u4GPu0Ad-bp5NvaY1ByxdShfIkcvwmF6j2uep2uzvPfNI9u_iR8nmvEoCEi1fe2k10

Gary, AKA "Gary fellow": Profile

Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI

mat in tn

Re: LS-Headed 300?

i have seen a little about it. what it really demonstrates is not only enginuity but how the 300 is truly limited by its breathing system. actually the head is not the whole thing. the intake is the biggest bang for the buck.

ArdWrknTrk

Re: LS-Headed 300?

Administrator

In reply to this post by Gary Lewis

I've heard of it, but not read this article.

Let's not forget the Frenchtown Flyer and his prototype crossflow cast iron headed dragsters, or the Aussie Barra inline sixes pumping out over 1,000 hp with forced induction.
The perfect primary balance of an I-6 has advantages.

There you go....
A YouTube rabbit hole that's going to take a couple of hours! 😂

Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.

85lebaront2

Re: LS-Headed 300?

Administrator

In reply to this post by Gary Lewis

I had seen it before, like most Ford engines in stock form durable as all getout, and can make serious power with some work.

Bill AKA "LOBO" Profile

"Getting old is inevitable, growing up is optional" Darth Vader 1986 F350 460 converted to MAF/SEFI, E4OD 12X3 1/2 rear brakes, traction loc 3:55 gear, 160 amp 3G alternator Wife's 2011 Flex Limited Daily Driver 2009 Flex Limited with factory tow package Project car 1986 Chrysler LeBaron convertible 2.2L Turbo II, modified A413

Rembrant

Re: LS-Headed 300?

In reply to this post by Gary Lewis

This was a great comment in the article LOL:

"This may shock you, but nobody makes an off-the-shelf header for this six-cylinder LS head."

1994 F150 4x2 Flareside. 5.0 w/MAF, 4R70W, stock.
1984 F150 4X2 Flareside. Mild 302 w/ 5spd. Sold.
1980 F150 4X4 Flareside. 300i6 w/ 5spd. Sold in 2021.
1980 F100 4X2 Flareside. 351w/2bbl w/NP435. Sold in 1995

1986F150Six

Re: LS-Headed 300?

Administrator

I love the 300/4.9L engine and have enjoyed reading about and having the pleasure of driving 4 vehicles powered by it. Yes, it can be made to have respectable power if one is willing to spend the money which often times is more than for building up a V8.

One article I read many years ago described how what is often seen as limiting the power output really is desirable when left stock if the owner is satisfied with the stock performance. That is to say that the stock log intake and exhaust manifolds, which by performance standards are terrible, greatly contribute to the diesel like flat torque band characteristics. The unequal length runners and small carburetor contribute to the maximum torque being developed at a very low 1600-1800 RPMs. The horsepower is low but the torque is very good for this sized engine.

A little bit of trivia: The 302/5.0L engine was never offered in any truck beyond the F250, but the 300/4.9L engine was standard equipment in the F600.

BigBrother-84

Re: LS-Headed 300?

In reply to this post by Rembrant

Rembrant wrote

This was a great comment in the article LOL:
"This may shock you, but nobody makes an off-the-shelf header for this six-cylinder LS head."

And some humorous ones too:
«Split personality? Yep. Well, at least until the two head sections are welded together.»

Kind of lobotomy reversal.

Jeff / 1984 F350 Crew Cab 4x4/5.8L w351 4V/ T18/ D50 4.10 front/ 8' bed.
Restored 2019-2022.
Nicknamed «Big Brother 1984», due to its soooo-looong shape & nod to George Orwell's 1984 famous novel.

mat in tn

Re: LS-Headed 300?

In reply to this post by 1986F150Six

excellent point about the 4.9 being offered in a great variety of trucks and lets not forget the industrial applications. the 5.0 does give far greater bang for the buck when it comes to one type of performance while the 300/6 gives a different type of performance. different but equal! engines should be chosen/ built per their intended use.