The Lunati LS1 stroker kit uses a 3.900" bore and a 4.000" stroke to achieve 383 cubic inches. Pistons are Lunati flat tops, forged from 4032 forged aluminum and CNC-profiled in Lunati's state-of-the-art piston turning facility. These pistons weigh 374 grams and have a 1.130" compression height. Ring lands are 1.5mm, 1.5mm and 3mm and piston-to-wall clearance is .0025". Rings are from GM.
Connecting rods are Lunati Pro Billet Super Lights made from 4340 aircraft-quality billet steel and measure 6.125" center-to center length.
A Lunati Pro Series non-twist forged crankshaft made of 4340 aircraft quality forged steel has a 4.000" stroke and weighs 45 pounds.
Add To Cart - 382 Rotating Assembly- 3.89" Bore-8cc Dome Piston-6.125 Rod Length
Add To Cart - 383 Rotating Assembly- 3.903" Bore-30cc Dished Pistons4.00" Stroke-6.125" Rod
Add To Cart - 383 Rotating Assembly-3.903" Bore-8cc REV. Pistons-4" Stroke-6.125 Rod
Add To Cart - 383 Rotating Assembly-3.903" Bore-+5cc Dome Pistons-4" Stroke-6.125 Rod
Add To Cart - 395 Rotating Assembly-3.903" Bore-11cc REV. Piston-4.125" Stroke-6.125" Rod
501 Industrial Way North | Toms River, NJ 08755 | Phone: 732.349.2109 | Fax: 732.244.0867
For those who wish to supply their own engine block, we offer SLP's ZL Series LS1 stroker kits. They incorporate many of the same top-quality components as the ZL402 short-block assemblies, all for some of the lowest prices on the market.
4.000" Eagle 4340 forged steel crankshaft, balanced to rotating assembly
4.000" Ross 2618 forged alloy pistons with -6.00cc dish (includes new rings and full-float pin)
Eagle 6.125" H-beam rods
402-CID displacement
11.3:1 compression ratio (nominal; ultimate compression ratio will depend upon heads and gaskets used)
Designed for naturally aspirated applications
Includes new rod and crank main bearings
NOTE: SLP STRONGLY recommends that final assembly and installation be performed by an experienced, professional mechanic. Assembly/installation instructions are neither included nor available with this part.
Add To Cart - ZL 402 LS1 High Compression Rotating Assembly
SLP
ZL 402 LS1 Low Compression
For those who wish to supply their own engine block, we offer SLP's ZL Series LS1 stroker kits. They incorporate many of the same top-quality components as the ZL402 short-block assemblies, all for some of the lowest prices on the market.
4.000" Eagle 4340 forged steel crankshaft, balanced to rotating assembly
4.000" Ross heavy-duty, low-compression, 2618 forged alloy pistons with -28.50cc dish (includes new rings and full-float pin)
Eagle 6.125" H-beam rods
402-CID displacement
9:1 compression ratio (nominal; ultimate compression ratio will depend upon heads and gaskets used)
Designed for forced-induction applications
Includes new rod and crank main bearings
NOTE: SLP STRONGLY recommends that final assembly and installation be performed by an experienced, professional mechanic. Assembly/installation instructions are neither included nor available with this part.
