@zz454Chevelle67,

Sorry to see all of the carnage. Seems like this can be chalked up to a lesson learned. Whichever route you decide to go with the build we'll have the parts you need. There's a good chance we'll have parts within our own Pro LS lineup that will fit the bill.

 

Picking up another 5.3 engine at a wrecking yard on Saturday mostly for the block and heads, got a machine shop lined up in Llano to bore the block if needed and valve job on heads. Going forged and have actually been looking at the Pro LS pistons. Picking up an engine hoist today after work.

 

zz454Chevelle67,

That sounds like a good plan and we have plenty of Pro LS piston options for you. These 2618 forged pistons were designed with boost in mind. No matter the rod you go with we'll have a piston option for you. Since this is a boosted application we'd recommend the 7cc dish piston options.

We'll put options together for you for the stock 3.780" bore and 3.785".
For a Gen 3 rod or our 6.098" forged H-beams with a .945" pin
- 3.780" bore: SUM-326945780-7P
- 3.785" bore: SUM-326945785-7P

For a Gen 4 rod with a .943" floating pin
- 3.780" bore: SUM-326943780-7F
- 3.785" bore: SUM-326943785-7F

For an aftermarket 6.127" rod with a .927" pin
- 3.780" bore: SUM-2999273780-7
- 3.785" bore: SUM-2999273785-7

We also have Pro LS piston and rod kits available. These come with our Pro LS 4340 forged H-beams that use ARP 2000 rod bolts and our file-fit piston ring sets. The 5.3 pistons with a 7cc dish and 6.098" rod can be found here. The 5.3 pistons with a 7cc dish and 6.125" rod can be found here.

Things to note. Our Pro LS pistons sit .005" in the hole with the standard 9.240" deck height. They are designed to be run at .004" piston to wall clearance. Full instructions on our Pro LS pistons can be found here.

 

@Summitracing Do you carry any 3.898 pistons for gen4 rods?

 

Yes and no

We have the 3cc mini dome SUM-3269453898-3 LS1 3.898" bore piston for use with a 6.098" rod and a .945" pin. However, these come with grooves in the pistons and clips so you can use them with Gen IV floating rods. To work, the pin bushing in the Gen IV rods will need to be honed from 0.9433" to 0.9458". Gen IV rods are bushed and will clearance easily without major work.

 

Forge the entire rotating assembly and throw a bigger turbo on it...

 

Funny you would say that, my nephew just offered me a great deal on a larger turbo, think I am going to need that money for other parts tho.

Got the junk yard engine home and on the stand, started getting it apart cylinders look great, but got hung up on the balancer, thought for sure some of my old pullers would work but no way. Got one from nephew last night so will get that balancer off tonight, hate being held up on something I thoght was going to be easy. Engine from yard turned out to be a 4.8 but I mostly want the heads and block anyways.

 

Where are you located? I think we could do some horse trading and get some money in your pocket too!

 

Just bore it out to what you want or just run the short stroke 4.8 and spin it to 8k plus.

 

We pretty much have you covered in the Pro LS line for whichever route you choose to go here. If you stick with the 3.267" stroke we have 4.8 Pro LS pistons and 6.275" Pro LS forged H-beams for it.