Diamond Pistons from RPM Machine

• Designed for drag racing & big nitrous. 2618 alloy.
• Fits Motorsport A&B 460; IDT Eliminator; TFS, & EX-514 (Flow Technologies).
• Ratios figured for .005” deck@10.300”.
• Standard 1/16” x 1/16” x 3/16” ring package - except for 4.750” stroke.
• 4.750” stroke pistons have .043” x .043” x 3/16” ring package & side gas ports.
• Premium H-13 tool steel pins included.
• Gasket volume = 11.4cc’s (avg.).
• Top ring down = .350”.
• Valve relief depths = .275” intake & .050” exhaust.
• Accepts 2.400” x 1.900” valves.
• Items are non-stock parts, made to order as necessary.

429-460 Race (Motorsport) Flat Top
Part #	Bore	Stroke	Rod	C. D.	Wt	Pin	CC's	Comp Ratio			Purchase Online
								75cc	83cc	90cc
								12.2 12.5 12.6 12.8 13.0 13.1	11.3 11.6 11.7 11.9 12.0 12.2	10.6 10.9 11.0 11.2 11.3 11.4
40301 $798	4.440 4.500 4.530 4.560 4.600 4.625	4.150	6.800	1.420	-	.990	-5.0	12.2 12.5 12.6 12.8 13.0 13.1	11.3 11.6 11.7 11.9 12.0 12.2	10.6 10.9 11.0 11.2 11.3 11.4	Discounted Prices
40310 $798	4.440 4.500 4.530 4.560 4.600 4.625	4.300	6.800	1.345	604 620 632 - 660 -	.990	-5.0	12.6 12.9 13.0 13.2 13.5 13.6	11.7 12.0 12.1 12.3 12.5 12.6	11.0 11.3 11.4 11.5 11.7 11.8	Discounted Prices
40320* $798	4.440 4.500 4.530 4.560 4.600 4.625	4.500	6.800	1.245	-	.990	-5.0	13.1 13.5 13.6 13.8 14.0 13.6	12.2 12.5 12.6 12.8 13.0 12.6	11.4 11.7 11.9 12.0 12.2 11.8	Discounted Prices
40330 $798	4.440 4.500 4.530 4.560 4.600 4.625	4.500	6.700	1.345	604 602 632 - 660 -	.990	-5.0	13.1 13.5 13.6 14.5 14.0 14.1	12.2 12.5 12.6 13.4 13.0 13.1	11.4 11.7 11.9 12.0 12.2 12.3	Discounted Prices
40341* $872	4.500 4.530 4.560 4.600 4.625	4.750	6.700	1.220	-	.990	-5.0	14.1 14.3 14.5 14.7 14.9	13.7 13.3 13.4 13.7 13.8	12.3 12.5 12.6 12.8 13.0	Discounted Prices

* Includes Oil ring support rails.