Has anyone tried this kit?
I don't know much about pistons, are these an OEM replacement? Will anything else be required? This kit is $600usd, can't find anything cheaper then that w/ pistons. I have a 98 LS1 btw..

http://www.summitracing.com/parts/FE...ComboContents/

Sealed Power ZBK6081000 - Sealed Power Engine Kits & Rotating Assemblies
all below included
-------------------------------

Sealed Power Z1888M - Federal Mogul Cam Bearings
Cam Bearings, Steel Backed Babbitt/Copper Lead Alloy, Chevy 1997-2004, 5.7L LS1, Kit

Sealed Power Z7298MA - Federal Mogul Direct Replacement Series Main Bearings
Main Bearings, Standard Size, Bi Metal, Chevy, GMC/Pontiac, 4.8, 5.3, 5.7, 6.0L, Set of 5

Sealed Power F82555A - Federal Mogul A-Series Rod Bearings
Rod Bearings, Performance, Standard Size, Bi Metal, Chevy, Small Block, Set of 8

Sealed Power Z2601909 - Sealed Power Engine Gaskets & Seals
Gasket Kit

Sealed Power ZE938K - Sealed Power Performance Piston Ring Sets
Piston Rings, Moly, 3.897 in. Bore, 1.5mm, 1.5mm, 3.0mm Thickness, 8-Cylinder, Set

Sealed Power ZH868CP - Speed-Pro Hypereutectic Pistons
Cast Piston

GM uses speed pro-Hypereutectic Pistons is some of there crate engines.. the GM HT 383 i had cam from GM with them looks like a good kit

I don't know anything about that one, but I generally stay away from kits. They are normally a bargain collection of parts that may or may not be optimal for what you're building. Have you already determined that you need new pistons?
I'm not really saying yay or nay, just throwing that out there.

No, I have not determined if new pistons are needed... but they do come in the kit and I planned to install everything else. This is a stock rebuild (I have to pass smog in cali so I cannot do much).

From what I can see the kit looks good but I don't know if it comes with the correct pistons. I hate to be a test subject, but it's what's in my budget and has all the parts I need (think I will buy a new oil pump later).

I belive everything will work fine, I just don't know about the pistons. It's comes with 8 of these (will they work for a 1998 f-body dropout):

Brand
Sealed PowerManufacturer's Part Number
ZH868CPPart Type
PistonsProduct Line
Speed-Pro Hypereutectic PistonsSummit Racing Part Number
SLP-H868CPUPC
614046630130

Bore (in)
3.898 in.Bore (mm)
99.000mmPiston Style
Flat top, with no valve reliefsPiston Material
Hypereutectic aluminumCompression Distance (in)
1.328 in.Wrist Pin Style
Press-fitPin Diameter (in)
0.945 in.Piston Ring Thickness
1.50mm x 1.50mm x 3.00mmQuantity
Sold individually.Notes
DurOshield® coated piston skirt.Calculator
Compression Calculator Tool
Stroker Combinations

call up the summit tech line they will tell you every thing you need to know about it

can anyone tell me if the 98 LS1 uses a flat or round top piston?

Piston Specifications Material
Cast Aluminum Description
Strutless, flat top. Compression Ht.
1.34” Weight
15.5 oz.

.

thanx, that's what I needed to know. Looks like the kit may be just what I needed.

LS1s are flat tops. Only 99-06 5.3's and LQ4's are dish pistons from the factory

I wouldnt bother with that overhaul kit. Half the stuff in it should be a replace as needed like the pistons and cam bearings. It leaves out alot of the other necessaries like the TTY rod/head bolts. The gasket kit shows the wrong image, and google cant find any other instances. Hope its just a file pic. Besides most LSx gaskets are reusable. Only must haves are head gaskets at $45/pr from summit

Another big issues is the fact your block is a 98. The cyl walls do not accept any overbore, you can do a max of .005" hone before it must be sleeved. If the walls are out of round or scored, its cheaper to find a fresh block