MAHLE Small Block Chevy 383 Flattop Powerpak Pistons, 6 Inch Rods

							                        

                                                        
Tapered inner face. Hard anodized billet aluminum. 
Made extra deep with stainless steel adjusting straps for years of dependable service. 
Available in three sizes: 4.000-4.090 bore, 4.125-4.215 bore and 4.250-4.375 bore. 
Ring Style Chart (GIF)

                                                    

						                        

							                        

                                                        All balancing is done with our state-of-the-art "hines" balancer by race mechanics with over 30 years of experience. A kit purchased with the optional balance job will ship in 24-48 hours. 


                                                    

						                        

							                        

                                                        
Accurately set end gap with this electric ring filer. Powered by a 12-volt rechargeable battery, it offers maximum speed and affordability. 
Comes with two 120-grit grinding wheels and battery charger. Portable or can be bench mounted. 
 
                                                    

						                        

							                        

                                                        
Keith Black Hypereutectic pistons are favored for their improved power and reduced scuffing. The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated pistons also offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by. 
For S/B Chevy 383 c.i. (4.000" bore x 3.75" stroke).
390 Hypereutectic alloy 
Fully machined crowns and valve reliefs 
Drilled oil drain backs 
Full floating wrist pins 
Triple wound spiral locks 
Reflective alloy allows 2% power increase 
Quench dome technology minimizes deterioration 
Zero deck quench designs 
Lightweight wrist pins 
Ring Style Chart (GIF)
474-134 Instructions (PDF) 
                                                    

						                        

							                        

                                                        
The Mahle PowerPak pistons are a race proven lightweight forged design that are complete with rings, wrist pins and locks.  They are also completely phosphate coated plus feature an anti-friction Grafal skirt coating.  PowerPak pistons are made from 4032 aluminum alloy to allow for tighter cylinder to wall clearances, and improved temperature stability. 
1.5mm, 1.5mm, 3.0mm file fit performance ring set is included. For 383 c.i. S/B Chevy (4.000" bore x 3.75" stroke). Choose oversize diameter needed. 
Mahle's phosphate coating provides the grey appearance to the  piston. This dry lubricant coating (not to be confused with a thermal  film coating) provides a lubricant film in the pin bores and ring  grooves until the oiling system of the engine reaches operating  pressure; particularly useful during the initial start-up or break-in of  engines to protect against galling and microwelding. The piston crown  is still machineable.
Mahle’s GRAFAL skirt coating reduces drag, scuffing, friction and cylinder bore wear; reduces piston noise.
PowerPak Piston Chart (GIF)
                                                    

						                        

							                        

                                                        
The Mahle PowerPak pistons are a race proven lightweight forged design that are complete with rings, wrist pins and locks.  They are also completely phosphate coated plus feature an anti-friction Grafal skirt coating.  PowerPak pistons are made from 4032 aluminum alloy to allow for tighter cylinder to wall clearances, and improved temperature stability. 
1.5mm, 1.5mm, 3.0mm file fit performance ring set is included. For 383 c.i. S/B Chevy (4.000" bore x 3.75" stroke). Choose oversize diameter needed. 
Mahle's phosphate coating provides the grey appearance to the  piston. This dry lubricant coating (not to be confused with a thermal  film coating) provides a lubricant film in the pin bores and ring  grooves until the oiling system of the engine reaches operating  pressure; particularly useful during the initial start-up or break-in of  engines to protect against galling and microwelding. The piston crown  is still machineable.
Mahle’s GRAFAL skirt coating reduces drag, scuffing, friction and cylinder bore wear; reduces piston noise.
PowerPak Piston Chart (GIF)
                                                    

						                        

							                        

                                                        
Formerly KB Forged Pistons. Starting with 2618 alloy heat treated to high strength T-6 specifications, these give you the best value for your money. Exclusive V-rib adds strength without adding weight but allows maximum cooling.  
High ductility 2618 alloy
Dual forced pin oiling on most applications
Lateral gas porting on higher compression ratios
Fully machined with deep valve pockets
Second land accumulator grooves
Top land mini groove technology
Diamond finished skirts
Triple wound spiral locks
For Chevy 383 c.i. (4.000" bore x 3.75" stroke). Use Style C rings (1/16", 1/16", 3/16").
Ring Style Chart (GIF)
474-728 Instructions (PDF)
                                                    

						                        

							                        

                                                        
The Mahle PowerPak pistons are a race proven lightweight forged design that are complete with rings, wrist pins and locks.  They are also completely phosphate coated plus feature an anti-friction Grafal skirt coating.  PowerPak pistons are made from 4032 aluminum alloy to allow for tighter cylinder to wall clearances, and improved temperature stability. 
1.5mm, 1.5mm, 3.0mm file fit performance ring set is included. For 383 c.i. S/B Chevy (4.000" bore x 3.75" stroke). Choose oversize diameter needed. 
Mahle's phosphate coating provides the grey appearance to the  piston. This dry lubricant coating (not to be confused with a thermal  film coating) provides a lubricant film in the pin bores and ring  grooves until the oiling system of the engine reaches operating  pressure; particularly useful during the initial start-up or break-in of  engines to protect against galling and microwelding. The piston crown  is still machineable.
Mahle’s GRAFAL skirt coating reduces drag, scuffing, friction and cylinder bore wear; reduces piston noise.
PowerPak Piston Chart (GIF)
 
Clearance!!
 
NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS 
                                                    

						                        

							                        

                                                        
The Mahle PowerPak pistons are a race proven lightweight forged design that are complete with rings, wrist pins and locks.  They are also completely phosphate coated plus feature an anti-friction Grafal skirt coating.  PowerPak pistons are made from 4032 aluminum alloy to allow for tighter cylinder to wall clearances, and improved temperature stability. 
1.5mm, 1.5mm, 3.0mm file fit performance ring set is included. For 383 c.i. S/B Chevy (4.000" bore x 3.75" stroke). Choose oversize diameter needed. 
Mahle's phosphate coating provides the grey appearance to the  piston. This dry lubricant coating (not to be confused with a thermal  film coating) provides a lubricant film in the pin bores and ring  grooves until the oiling system of the engine reaches operating  pressure; particularly useful during the initial start-up or break-in of  engines to protect against galling and microwelding. The piston crown  is still machineable.
Mahle’s GRAFAL skirt coating reduces drag, scuffing, friction and cylinder bore wear; reduces piston noise.
PowerPak Piston Chart (GIF)
 
Clearance!
 
NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS