Pontiac 400ci Hypereutectic Piston And Ring Kit Step Dish Standard

Name: Pontiac 400ci Hypereutectic Piston And Ring Kit Step Dish Standard
Brand: UNITED ENGINE MACHINE
SKU: 648-KB346KTM.STD
Price: 585.62 USD
Availability: OutOfStock

Currently Unavailable

This product is no longer available. Please call customer service for assistance at 1-800-345-4545.

Pontiac 400ci

Step Dish

D-Cup Dish -17cc
4.120" Bore
Use w/6.630'' Connecting Rod & 3.750'' Crank Stroke
Comp. Ratio: 9.6:1/71cc; 8.4:1/87cc; 7.8:1/96cc; 7.1:1/111cc
8/pkg

Note: Designed to work with 1967 and later 14-degree and 20-degree heads. Piston is .025" below a 10.250" deck. Check small end of rod to piston before assembly / .045" clearance per side minimum.
Technical Specs:
Alloy: Hypereutectic 390 Alloy
Bore: 4.120'
Crankshaft Stroke: 3.750'
Connecting Rod Length: 6.630'
Deck Height: 10.250'
Compression Height: 1.710'
Pin Size: 0.980' x 3.000'
Pin Location: Centered
D-Cup Dish Top: -17.0cc 2 Valve Reliefs
Intake Valve Relief: 0.248" Depth / 2.210" Diameter
Exhaust Valve Relief: 0.248" Depth / 2.210" Diameter
Top Landing Height: 0.300'
Ring Grooves: 5/64' Top; 5/64' Middle; 3/16' Bottom
Gram Weight: 557/163
Compression Ratio: 9.6:1 w/71cc Combustion Chamber Heads; 8.4:1 w/87cc Combustion Chamber Heads; 7.8:1 w/96cc Combustion Chamber Heads; 7.1:1 w/111cc Combustion Chamber Heads