The best straight six?

Remember that the thread question was "best combination of engine and automatic transmission". You guys all mention some very fine engines, but none of the transmissions that would be bolted to them would ever have been as solid as the Torque Flite was, even considering the technology of today. Heck, the C-6 is great too, but I don't think it ever came with an I6. I might be wrong about that though.

IMO, the slant 6/Torque Flite combo from Chrysler/Dodge/Plymouth still has to be the best 'combination' between 1964 and 2007. It was certainly not the fastest, or the biggest, or yeilding the most torque or horse power, heck, it didn't even sell the most, but it was by any stretch the toughest and most dependable! The bodies and frames rusted away around them, but that combo was still legandary. It's hard for a Ford guy like me to admit that, but it's true! :? I wonder if any over-head valve engine, V-8 or I-6 could stand raw abuse like the old slants. But, were it not for adding the tranny consideration, the Ford I6 and the AMC 258 would stand tall, and perhaps win the survey. The Torque Flite was perhaps one of the few reasons that you would even consider buying a Chrysler product at that time.

Harry
 
The latest 4.0 Falcon Twin cam has the toughest block, the best head, and the best 6 speed transmission money can buy. And an optional GT40 ball bearing turbo version just itching to shove more than its stock 350 hp to the drive line.

The early steel crank Chrysler Torqueflite and Mopar 225 slant six was the greatest combo for the money anywhere from 1961 to about 1969, when the acountants started cutting away at the steel in that design. The 225 was a real long rod, long stroke six that was smoother than silk, and with more torque than a small traction engine.


Imagine if they had put a Hemi head on it, and given it the 258 cubes its know the block could handle.
 
well for me it has to be the 300 i just finally rebuilt it 2 months a go and it had 450000 miles on it and now only has 3000 but it now has 475hp and 650ftlbs of tourqe and will definatly eat up an import any day at any given hour just yesterday in the quarter mile eat up a 1000hp supra with twin turbos and i didn't even have the throttle but half way pushed let alone floored and it also got an perfomance aod behind it and gas milage hell i want complain 26 mpg and thats on a bad day let alone a good one i think the best it ever got was 30. oh it now resides in a 1963 built series tbird with a procharger, individual throttle bodies, and boy does it turn some heads at car shows especially at car shows when you go somewhere and race where the cops don't go.
 
basic over haul 30 over new pistons forged that is 10 to 1 compretion, 10lb of boost from the procharger and put 3.73 rear end and 650hp/650ftlb performance AOD tranny got six individual throttle body setup from extrudabody and made a plentium for my procharger piping as well as a bracket for it and got a computer set up from retrotek to run the six individual tb and with it being efi it's not hard to get the mpg and with the procharger really not hard to get real good torque and horsepower and next month i'm gonna finally install front and rear independent suspension on it.
 
So what kind of automatic transmission does it have. After all, that's what this thread is about. Best six cyl/automatic combination of all time.

Harry
 
60s Refugee":1kkyufxk said:
Remember that the thread question was "best combination of engine and automatic transmission".

Ah, OK. Cummins 5.9L with an Allison auto.

Boy I'd like to see that combo in a '70s full size Bronc with a cast iron divorced transfer case.
Not just bulletproof, that's 16" Iowa-class gun proof.
 
Nobody has mentioned the Thorne-Sparks 6.
It was variously raced as a normally aspirated 5.5 or 4.5 litre and as a supercharged 3 litre I6 engine.
It raced at Indy from 1937 to 1949 or so.
It won the 500 in 1946 with George Robson behid the wheel.

That was back when Indy was all about innovation. :roll:
 
well, it looks like i'm late to this party :)
i'd have to say the 300, followed by the 225 and the old AMC 258.
although the 250 i used to have was pretty durable, just try to start it hot though :evil:

oh, and i have NO love for come aparts(cummins), it could have something to do with having to work on them just about every day :evil:
I'd take a 3126 or a DT 466e over a cummins any day
 
If I could own any six for a hotrod it would have to be a Miller. Pure art.
For my pickup a 300 or a 6bt and always 3 pedals.
 
Lazy JW":1bfvruu7 said:

Cummins. Secondly the 300.

32sedan":1bfvruu7 said:
well for me it has to be the 300 i just finally rebuilt it 2 months a go and it had 450000 miles on it and now only has 3000 but it now has 475hp and 650ftlbs of tourqe and will definatly eat up an import any day at any given hour just yesterday in the quarter mile eat up a 1000hp supra with twin turbos and i didn't even have the throttle but half way pushed let alone floored and it also got an perfomance aod behind it and gas milage hell i want complain 26 mpg and thats on a bad day let alone a good one i think the best it ever got was 30. oh it now resides in a 1963 built series tbird with a procharger, individual throttle bodies, and boy does it turn some heads at car shows especially at car shows when you go somewhere and race where the cops don't go.

I call Bull. :P
 
Chevy's 4.2L straight six has been on Ward's 10 best engines for years. Leave it to Chevy to not put it in anything but an SUV.
p159130_image_large.jpg
 
Best ever for POWER and DURABILITY was the IHC (international Harvester) 220 inline 6 six. They installed this motor for almost 40 years and used this block w/different bores for almost 60 years. They are still out there and running today.
 
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