Diamond Pistons from RPM Machine

• Made exclusively for the EX-514 BB Ford cylinder head. 2618 alloy.
• Will work with medium to large nitrous kits.
• Designed for all-out max compression & power.
• Ratios figured for .005” deck@ 10.300”.
• Standard 1/16” x 1/16” x 3/16” ring package on part #s 40100-40124.
• Standard .043” x .043” x 3/16” ring package on part #s 40130-40154.
• H-13 or 9310 P-series pins included.
• Top ring down = .350”.
• Valve pocket depths = .300” intake & .000” exhaust.
• Will accept 2.400” x 1.900” valves.
• Items are non-stock parts, made to order as necessary.

385 Series Race Series motorsport A&B
Part #	Bore	Stroke	Rod	C. D.	Wt	Pin	CC's	Comp Ratio			Purchase Online
								74cc	78cc	81cc
								14.1 14.1 14.3 14.4 14.6	13.5 13.5 13.6 13.8 13.9	13.0 13.0 13.2 13.3 13.5
40100 $872	4.390 4.400 4.420 4.470	4.150	6.800	1.420	-	.990	9.6	14.1 14.1 14.3 14.4 14.6	13.5 13.5 13.6 13.8 13.9	13.0 13.0 13.2 13.3 13.5	Discounted Prices
40110* $872	4.390 4.400 4.420 4.440	4.300	6.800	1.345	-	.990	9.6	14.6 14.6 14.8 14.9 15.1	13.9 14.0 14.1 14.2 14.4	13.5 13.5 13.6 13.7 13.9	Discounted Prices
40120* $872	4.390 4.400 4.420 4.440	4.500	6.800	1.245	-	.990	9.6	15.2 15.3 15.4 15.5 15.7	14.5 14.6 14.7 14.8 15.0	14.1 14.1 14.2 14.3 14.5	Discounted Prices
40130* $872	4.500 4.530 4.560 4.600 4.625	4.300	6.800	1.345	-	.990	9.6	15.3 15.4 15.6 15.9 16.0	14.6 14.7 15.0 15.2 15.3	14.1 14.3 14.4 14.6 14.8	Discounted Prices
40140* $872	4.500 4.530 4.560 4.600 4.625	4.500	6.800	1.245	-	.990	9.6	15.9 16.1 16.3 16.6 16.7	15.2 15.4 15.6 15.8 16.0	14.7 14.9 15.0 15.3 15.5	Discounted Prices
40150* $872	4.500 4.530 4.560 4.600 4.625	4.750	6.700	1.210	-	.990	9.6	16.2 16.4 16.6 16.8 17.0	15.5 15.7 15.8 16.1 16.2	15.0 15.2 15.3 15.6 15.7	Discounted Prices

* Includes Oil ring support rails.