Anyone try a 315/325 crank in a lowdeck 270?

Looking for info on using a 315/325 crank in a 270 lowdeck Dodge anyone do this before, would like to know what rods and pistons were used. Did a search on this but nothing on low deck Dodges being stroked. Any help would be appreciated. Thanks.
Wayne

 

All I know is that you need to turn the 315 main journals down to the 270 size then source custom pistons to firt the rods - can be done but why not build a 315/325 instead.
Crank and rods may need to be clearance fitted once in the block - there is book from victory library that talks about this however the general consensus was build the bigger motor - the gains from stroking a 270 were not the best dollar spend for horsepower

 

Or shorter rods. Be cheaper just to go with a 315/325, but what ever floats your boat.

 

I was just thinking about it because I have the 270 and I have to rebiuld it anyway plus it is a low deck engine which means less weight than the 315/325. Also in my research I was coming up with 340cid with offset grinding the crank, I just figured I wasn't the only one to think about doing this. The Dodges are limited in parts and I was just thinking it would be a cool project, but it does sound like a big can of worms. Thanks for the replies!

 

If you have the $ go for it. Look @ the 315 build(& 241) www.webrodder.com Doc has/had the 315 up 4 sale @ 10K.

 

Yes his rebuild (doc's) is very intersting however at $12k and he said he stopped counting - makes it a rather exotic engine - a bloody fine one however expensive.
even if you take all the bling off the price it still comes out at $8500 and he still stopped counting!!! Not knocking it - more trying to say you need a good cause to go this way cause there are more economically ways to make horsepower

 

Edelbrock used to sell a stroker kit for the 241 dodge (same crank as the 270) in 1954/55. He went .250 inch and included pistons.

I have a spare block and a crank, so was thinking about doing a stroker with an .080 bore. Mainly because the car is setup for a 270, rather than just a wild hair (smile).

There's a company called Mile High Crankshafts in Denver that will stroke cranks.

The major problem with all this, is the heads on the low-deck Dodge, are really crap. The ports are too small. What we need is someone with a CNC machine to create some big port heads from billet (smile).

 

Thanks for the input, like I said I thought it would be a cool engine to build but I don't have a lot of money and the heads are not very good ect., ect. There is many reasons not to and only a very few to do it.

 

Personally, I like min overbores. The usual thing with 241/270 is 315/325 heads.

 

Truth be told, I'll probably never do anything with the motor, as I haven't been able to find any good heads in the last 3 years, where the owner didn't want to put his kid through college with the purchase price.

One rule I have about Dodge, is they should be close to free as possible

"Dodge them Dodges!" - Tony Capanna

 

Cheap & Hemi are incompatible terms!

 

True, but if the price is equal to Chrysler parts, get the Chrysler parts.