Hey guys, I have a 2013 low mileage 5.3 block I'm building for my dd. It'll be a torque oriented build that will spin less than 6500rpm. Top end will be mildly hand worked 243s, nnbs intake manifold, and a comp 212/218 hi lift on a 112 lobe sep. I want to use a 4" stroke crank with the stock 3.780 bore, but that puts me in an odd piston selection. The only pistons made for that combo use a .927 wrist pin. If I'm understanding right, my stock gen 4 rods are .945 pin, although I've read otherwise. I really wanted to build a really cheap torque focused engine. If I'm gonna have to buy rods, crank and pistons, I might as well go big. The pistons made for that application have a compression height of 1.100". Stock is roughly 1.324" I believe. Stock rod length is 6.098", whereas I've seen this combo done with 6.125" rods with 1.1" ch pistions. The pistons are available with the .945 wrist pin, but only in a 1.3" compression height, which is designed for use with stock stroke and rods. Do you guys see any alternative here? Or would I have to do a complete rotating assembly to achieve the 5.9L stroker? Stock rods and pistons would come out of the hole too far I'm sure.

 

Money youll have in that motor you could build a 402 for similar price

 

Yup!!

 

The point of this thread is to see if anyone knows of a piston that would work so I don't end up buying a complete rotating assembly. Which, if that's the case, I'm going to 3.905 bore and 383ci.

 

Still wouldnt build a 383 when same cost for 402

 

I'm using a stock aluminum block with stock liners.

 

Cost to build a 383 is same price as 402

Since they use same crank same rods and pistons cost same.....

 

But wouldn't 4.000 bore leave me with very little liner thickness on the stock liners?

Plus, if I do 383 or smaller now, I can always go bigger later with just a piston change. Can go down in size if something doesn't play right.

 

Not to mention the skirt wear associated with 4"+ bore on a 4" stroke. The original intent of this thread was to find out
1) are gen 4 rods .927 or .945 wrist pin?
2) could a 359ci engine be built from a 5.3 without buying all aftermarket rotating components?

 

If I had a wrist pin or rod at home, I'd just measure it. But everything's at the shop. If the gen 4 rods are indeed .927 wrist pin, the wiseco makes a piston that will work with 4" stroke and stock 6.098" rods. Giving me the exact combo I desire