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Anyone run a stroked 400 in '68-70' Charger

Started by Bulldog69RT, July 26, 2011, 11:17:13 PM

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Bulldog69RT

Anyone run a stroked 400 in their '68-'70 Charger? My '69 has a 400 in it now (its what was in it when I bought it) and everything seems to fit fine. Its a factory 440 R/T car. I want to build a 470 out of that 400 though. Seems like a pretty strong setup.
'69 Charger R/T. Restoration in progress...

Troy

The most common stroker (I believe) is a 451. Search around as there are several threads about them. Kenny Wayne Shepherd has one in his "Extreme Lee".

Troy
Sarcasm detector, that's a real good invention.

Nacho-RT74

what I have analized:

the 426/444/450 ( stock 440 crank on a 400 or even a 383 like the 426 ) is not more than an overbored 440 but running into a BB deck. What is nice on it is that you'll get the magic of a 440 on a "smaller" block and getting higher CR on a lighter rotation assembly.

for a REAL stroker, 470 to up begans to be a diff story and making a difference from the 440 3.75 stroke distance ( 3.90, 4.00, 4.XX stroke ) no matter if using stock 440 crank with offset rod journals or getting a completelly diff stroke on crank... up to get 512.

bigger the stroker, smaller the pistons, lighter assembly. But also requiring tighter clearences to keep safe the engine.

Myself I'm on it, but playing with clearences limit, so longer pistons in my case is the best ( building a 444, keeping standard 400 bore ). Next time maybe will be more radical, but definitelly not now.

what helps this reply to you? dunno, just wanted to post about LOL
Venezuelan RT 74 400 4bbl, 727, 8.75 3.23 open. Now stroked with 440 crank and 3.55 SG. Here is the History and how is actually: http://www.dodgecharger.com/forum/index.php/topic,7603.0/all.html
http://www.dodgecharger.com/forum/index.php/topic,25060.0.html

200MPH

Charger

PA Dodger

Well, almost. I have a finished 470 sitting on the engine stand next to my '69 Charger. Promax did my shortblock for about what it would have cost me to buy the stroker kit and machine the block.
'69 Charger / '69 Dart convertible/ '74 Cuda

Budnicks

Quote from: Troy on July 27, 2011, 08:55:48 AM
The most common stroker (I believe) is a 451. Search around as there are several threads about them. Kenny Wayne Shepherd has one in his "Extreme Lee".

Troy

You probably already know this... The 470 is a 4.35" bore w/3.95" 0.200" offset ground 413-426-440 3.75" crankshaft w/2" BBchevy connecting rod big end sizes, it use to be very common stroker before all the now available aftermarket 3.75"-3.95"-4.15"-4.25"-4.375"-4.5" BB Mopar stroker crankshafts...  The counterweights need to be turned down to some were between 7.120"-7.250" depending on block & core shift.,, I run a 479ci 0.040" over 383 4.290" bore w/4.15" stroker, I love it I have don several of these 400 & 383 B-series base strokers for my projects, it's nice to have the big cubes in a slightly smaller package than the R/B block...
"fill your library before you fill your garage"   Budnicks

1970Moparmann

I stroked out a 400 to a 500.   440Source kit, with the aluminum heads.
My name is Mike and I'm a Moparholic!

GunMetal

400/470 cu.in. in my '73. 440 source kit, roller cam, Eddy heads, 9.5 c/r. Could not be happier! It can be a monster when wanted, or tame enough for the wife to drive you home "If needed"! :2thumbs:
Non illegitimis carborundum

green69rt

I read somewhere that a 400 is an ideal candidate for stroking because of the low crank angle.  Low crank angle means that the pistons are not pushed against the cylinder walls and thus less friction and wear.  That means more power for the same amount of stroke.  Light weight, lots of parts available and the low crank angle means you can get lots of cubes at reduced cost with good reliability. 

64dartgt

Just picked up my 340 from the machine shop today.  The machinist is a huge Mopar guy.  He said he was very impressed with the results he got building a stroked 400 for his Brother-in-law.  We better start stock piling 400 blocks!   :scratchchin: