Chevy Small Block
Nitrous - Dome Top

• Designed to fit most 23° cylinder heads.
• Designed for medium to large nitrous applications. 2618 alloy.
• .240” underhead thickness.
• Reinforced side reliefs.
• Standard 1/16” x 1/16” x 3/16” ring package.
• Top ring down = .300” - .250” on 1.000” cd.
• Premium 4130 pins included.
• Valve relief depth = .325” intake and .220” exhaust.
• Some items are non-stock parts, made to order as necessary. See shopping cart for availability.

350 Block : 4.000" Standard Bore 3.480" Standard Stroke Ratios figured for 0" deck @ 9.000"
Part #	Bore	Stroke	Rod	C. D.	Wt	Pin	CC's	Comp Ratio			Purchase Online
								64cc	70cc	76cc
								12.0 12.0 12.0	11.1 11.1 11.1	10.3 10.3 10.3
11801 $742	4.030 4.035 4.040	3.480	6.000	1.250	491 490 493	.927	10.0				Discounted Prices
11804* $742	4.030 4.040 4.060	3.750	6.000	1.125	-	.927	4.0	12.1 12.2 12.3	11.3 11.3 11.4	10.5 10.5 10.7	Discounted Prices
11807* $742	4.030 4.040 4.060	4.000	6.000	1.000	-	.927	4.0	12.9 13.0 13.1	12.0 12.1 12.2	11.2 11.3 11.4	Discounted Prices

 

400 Block : 4.125" Standard Bore 3.750" Standard Stroke Ratios figured for 0" deck @ 9.000"
Part #	Bore	Stroke	Rod	C. D.	Wt	Pin	CC's	Comp Ratio			Purchase Online
								64cc	70cc	76cc
								12.2 12.3 12.3	11.4 11.4 11.5	10.6 10.7 10.7
11815* $742	4.125 4.145 4.155	3.750	6.000	1.125	482 502 505	.927	3.0				Discounted Prices
11818* $742	4.125 4.145 4.155	4.000	6.000	1.000	-	.927	3.0	13.3 13.4 13.5	12.3 12.4 12.5	11.5 11.6 11.7	Discounted Prices

* Includes Oil ring support rails.