Found a listing for an engine and would like some "professional" moparts input at what I'm looking at/reading here. I've never heard of someone stroking a 318 to 341. What kind of HP may this combo make.

"This screaming mopar shortblock motor features a 318 factory roller block and an 3.55" stroke 8 bolt 4340 Forged Steel Mopar Performance Race crank. It also features 6" Mopar performance Aluminum Connecting rods and Kieth Black High compression pistons. The motor displaces 341 cubic inches and 10:1 compression based on using a 65 cc combustion chamber head. The crank and rods alone are worth more than the asking price and could (if you wish) be swapped into a 340 block for a ~372" screamer. I have another motor and I really hate to let this one go but I'm out of room in the garage. Machine work was done by H&H Machine down in Indian Land, S.C. very well known and respected machine shop used by many Drag and Circle track racers.

I will sell this assembled shortblock (less cam) for 1250.00. The shortblock is an assembled Block, crank, Rods, Bearings, Pistons and rings. Or I will throw in a custom grind 236/240 @ .050, .520/540 Hydraulic roller and set of factory style HR lifters and double roller timing set and heavy wall Smith Brothers racing ball/cup pushrods, plus an oem 340 pan, pick-up and timing cover for another $250.00. Another killer deal (price all that up if you don't believe me)

You can see the shortblock and internals on youtube and you can also see hear it running. Type in 'wizerulz' and look for the Streetwize Performance Rocky videos #2 and #3, pretty much all you need to see to tell you this is a screaming good deal for any real mopar gearhead. Drop this motor into a nice late 60's early 70's Dart or Duster and with a good set of heads and the right gears and stall and you could have an easy 11 second car. This same motor with an 125 Nitrous shot should get you legit 10's. Although this is a 318 based 341" mini-stroker you can't hardly buy any rebuildable 340 shortblock with all the parts for what you can get this for. Also the rotating/reciprocating bobweight is about 250 grams lighter than an oem 340....that means much faster rev's and higher RPM. not to mention you can put in any Comp or Bullet hydraulic roller right in her and use oem mopar lifters....huge savings over having to buy >$300.00 worth of "retro-fit" roller lifters just to make the cam work. "

It is a bit of an odd combo but it should work well.Lots of good parts.In a light car it will be fun.With the right cam should be torquey with the short rod and the small bore.

A bit of an odd combo... . Some time ago, I believe MP sold shorter "stroker" cranks in about that size. Not for a few years though. Everything today seems to be 4". Also the aluminum rods. A little shorter than a factory rod...with light weight and limited fatigue life.

The neat thing about 318 strokers is they can make great strong street engines - also great sleepers. With the AL rods, this one wouldn't be a great street engine. With the smaller bore of a 318 and the fairly short stroke, it doesn't make a good race engine either.

I'd take a pass on it.

I wasn't really looking for a drag motor but for $1200 i'd figure I'd ask around. The combo sounds like it would make good power and be fun but my no means a balls to the wall drag car. Although I know a guy who has a mini-tubbed dart cheap that I could throw that engine in.

The seller appears to be "StreetWize". He posts a lot on the Race Forum, and is pretty darn knowledgeable. If you have an interest, I would suggest sending him a PM, and telling what you intend for it. He seems like a straight-shooter, and may have some good insight on whether this would work for you or not.

Dave

I'd have 100% confidence it was built right since it was done by Bobby, aka "Streetwize".

in the race forum, there's an old (lengthy) thread about the buildup.

basically MP had a bunch of oddball sized cranks, this one was I think intended for roundy round racing, where there is a 355-360cid displacement limit, put this crank in a 340 block, and you get right around the 360 cid limit...

It would be worth looking into; the kicker is the aluminum rods. If you could change those at a good price, ok. I think it's a good deal, not a killer one.

unless you plan on daily driving it for 100k miles, I wouldn't worry about the aluminum rods.

i think the 97 - 03 C5 Vette is a 3.9 bore x 3.6 stroke for 346 cu in.
be careful if you race one.
350 rwh rocket...

..nobody on this site cares but that little 346 ci C5 was massaged in 01 to 385 net hp and then again in 02 to 405 hp which is probably over 500 gross.
this was the ZO6 and is just a push rod V8