5.7 Chevy rod in a 2.3?

[xpress]

I'm in the process of building a 2.3 for a '93 Mustang for a 1/4 mile dirt track. I want to run 5.7 chevy rods and want to know hat is involved to make this work. Any ideas of suggestions would be appreciated. Thanks...

 

[bhuff30]

We don't have many if any members that do the circle track thing, so you might want to keep looking for a good board to ask.
Anyway, I beleive the crank has to be turned down to the size of the chevy journal. I am not sure about the wristpin side though.

 

[351wcoupe]

We don't have many if any members that do the circle track thing,

That may not be entirely true.

By the time you turn the crank that far and balance it you can just buy the 5.7 rods for the stock journaled 2.3 crank.

I'm going through the thought process of doing a "stock parts" stroker windsor with great heads out of all junk yard parts.

One thing I'm afraid of, is weakening the crank by turning it more than a few thousands.

 

[67efivert]

A friend of mine has been through this before and i dont rember the exact specs but i know he used 6cylnder chevy rods the bearing is centered in them verses the offset of the v8 rod its still the same 5.7 spec rod though

 

[Red_LX]

Yeah, people that use Chevy rods only use Chevy 250 (I think) six cylinder rods. Never heard of anyone using 350 rods. You might wanna check out Esslinger for more info. www.esslingerracing.com

 

[Bearded Forever]

When 5.7 is used I think they mean 5.7". Racer Walsh also mentions them to be Chevy 6 cylinder rods.

 

[manny]

yes go with RACER WALSH they have all the parts.

 

[svoman2300]

The econo way of doing it is to use actual stock 5.7 six cylinder rods. They have to be machined in width to fit our cranks. However they aren't that strong. It's best to go with a 4340 rod. You will also need pistons specifically for a 5.7 rod . Race Engineering www.raceeng.com is your best bet if your building a circle tack car. Race actually sells two more rods longer than 5.7 , 5.8ish and 5.9ish but I believe those are used on 1/2 mile tracks.
Edit I just realized you're in Texas. Contact Dale at [email protected] he is in Pensacola Florida and specializes in 2.3's both circle track and turbos.

 

[Ray III]

One thing I'm afraid of, is weakening the crank by turning it more than a few thousands.

yep... hardened materials only have a hard surface, then the hardness of the material diminishes with depth. Any crank that gets turned down a lot, I would want to see it surface hardened again.

I don't know whether it is an actual structural concern, or if it just greatly increases the possibility of butchering up the journal if bearing contact is made.