I would say 428 cobra jet! straight beast
I have a built 352 fe -stock low end,with edelbrock rpm air gap intake,demon
650 carb,cobra jet iron heads,polished high flow water pump,quiet gear drive,
fat hooker headers-backed by dual cherry bombs,polished ford valve covers,
high flow oil pump,custom oil pan.3 speed on the tree,ford 9" possie 4:11
running gear.67 FORD 100 RANGER longbed.All original-except engine,clutch,
and rear end. 427 cobra jet is a bad edited engine.....I love 351c,and 289's
352-428 FE'S KILLER ENGINES-straight SOLID

 

The Chevy 454 LS6 by far the leader of the pack.

 

Because it came out in a time of smog and never real;ly did anything as good as the others. THe 440 powered 12 sec mopars, and the 454 powered 12 sec chebies, but the 460 never power a 12 sec vehicle in stock form.

 

But a 440 six pack of the same car (stock for stock)will win in the 1/4 mile given all other varyables are the same. For instance, the fastest stock road runner was 440 powered not hemi. #'s don't lie.

 

Ford 352-428 FE for best big block engine family. Best big block goes to the SOHC 427. If I had one, I'd stroke it to 470ci. Then I'd get custom (modern) cams ground for it.

Mr. 502 chebby can go whimper in the corner!

 

Ford and GM were the only ones to have a 12 second car out of the showroom. The 66 Shelby Cobra with the 427 and the 66 vette with the 427 were in the 12s. On original bias ply tires at that. Even the mighty 1970 Chevelle 454 SS 450HP could only muster a 13.2. The 460 has probably never seen a 15 second quarter from the factory but there is tons of potential.

 

I am veering a bit, but I'm a fan of the Rolls Royce Merlin. Though it's not your typical 8-cyl engine, who can shun 1200hp?

 

My Dad bought new and still has a 67' Pontiac 2+2 with a 428 HO Classic. Came factory with 485HP and a Holley 3-bbl carb. That is one mean engine with the power to back it up.

 

Duedroy- You might want to check your facts on the 428 Pontiac. Two versions of the engine were offered in 1967, 360HP and 376HP. Remember, the 426 Hemi was rated at 425HP, the 440 Six Pack was rated at 390HP, the Ford 428 CJ was rated at 335HP and the LS6 454 was rated at 450HP. While all manufacturers played games with horsepower ratings, none rated any of their street motors at 485HP.

 

and then there was the boss 429 detuned for the street but in nascar during the early 70's nothing could beat it the 426 hemi was tough ,the 427 chevy was good but both were overmatched against the BOSS.

 

Nice choice! Iowa rules

 

Well ford was going to build the 460 into a 501 mustang, I am sure that would have been the factory car to beat, but since it was never produced, i love Fe's so the 427 thunder bolt could crack 12's and the SOHC is bada$$, but with modern heads and cams the BOSS 429 kicks everthings butt.

 

Perhaps with the proper modifications the Boss 429 could be upgraded, but all testing from the era agreed that the 428 CJ or the 429SCJ were better engines for the street, and the road test numbers back that up. Also, the 427 SOHC motor was never released for street use, it was a racing engine, pure and simple. Ford could have tooled it up for production, but there were major issues with the chain driven cams (stretch), and it was extremely complicated expensive to produce. Chrysler faced the same issues when they released the racing Hemi in 1964, but due to the simpler design of the engine, they decided to produce a production version, and manufactured about 10,000 through 1971. For street engines, the hot big blocks from the late sixties or early 1970's were the Hemi, the 440 Six Pack, Chevy LS5 and LS6 454's and Tri-Power 427's (in the Vettes), the Buick 455 Stage 1, the Olds 455 W-30, and the Ford 428 CJ and 429 SCJ. Which is best, well that depends on the individual I suppose, but the Hemi is one that everyone compares against, so that says something. And, for those who like the Hondas, etc, remember, there is no replacement for displacement!

 

From what I understand, the SOHC 427 was available from Ford as a crate engine for a while. As for the chain issue, I'll bet it's possible to convert it to a belt.

 

It was available as a "crate" engine, but sold to racers, not the general public, and Ford never put it in a car intended for street use. NASCAR engines only have to last for 500 miles, and extremely well trained mechanics maintain them, not someone at Jiffy Lube. Actually, Ford really did not need the engine on the street, their 427s, 428s, and 429s did just fine! As for the 460, there was never a real hi performance version, the 460 was the replacement for the 462 in the big Lincolns, and later T-Bids and other big Fords and Mercs of the 1970s.