This cylinder sleeve fits all 1929-1936 Chevrolet six cylinder engines with 3-5/16" standard bore. Dimensions of the sleeve: Material: Cast Iron Standard Bore ID: 3.3125" (3-5/16") 84.1375mm; Length 7.5620" 192.0748mm; Wall Thickness: .09375 (3/32") 2.37998mm ID 3.2820" 83.3628mm OD: 3.5030" 88.9762mm

This is a set of piston rings to fit all 1929-1936 Chevrolet cars & trucks (both Standard & Master). Standard Bore is 3-5/6" - SPECIFY SIZE REQUIRED: STD, .020, .030, .040, .060 and verify the thickness of rings. Replaces GM# 609963, 609970, 609974, 609978 NOTE: 1929-1932 Rings are 1/8, 1/8, 3/16" thick for replacement pistons. NOTE: SOME REPRODUCTION PISTONS REQUIRE RINGS SPECIFIC TO THE NEW PISTONS - CHECK MEASUREMENTS. If you have original pistons in a 1929-1932 engine, the ring thickness is 5/32", 5/32", 5/32" - Order AF-403A. COMPARE TO YOUR ORIGINALS BEFORE ORDERING.

SPECIFY SIZE REQUIRED: STD, .020, .030, .040, .060. These rings are for original Chevrolet pistons that are all 5/32" thick. Replacement pistons are 1/8", 1/8", 3/16" thick - See AF-403. COMPARE TO YOUR ORIGINALS BEFORE ORDERING. Replaces GM# 609963, 609970, 609974, 609978 NOTE: These are obsolete items that are difficult to find. If not in stock, lead times may be long, if we can find them.

SPECIFY SIZE REQUIRED: STD, .020, .030, .040, .060. If ordering just pistons and not rings, we need to know the original ring thickness. NOTE: REPLACEMENT PISTONS ARE ALUMINUM and require a bore clearance of .0025" to 0030".