Cylinder Heads - M8

SUBURBAN SPEED Stage I M8 Ported Heads are a great entry level performance cylinder heads for 2017+ Milwaukee Eight. These heads utilize our patented superstock valve job with extensive bowl blending and stainless intake and exhaust valves. We have increased the air flow and velocity 10% for great throttle response. The valve springs are also upgraded for a max lift of .550. Great heads for 114 to 131 cubic inch engines. These heads have produced over 140 hp and 150 torque. All of our heads are flow bench tested to ensure the performance of the heads. You can use our exchange program or we can port your heads.

$829.95 EXCHANGE

Pricing and availability subject to change without notice.

SUBURBAN SPEED Stage II M8 Ported Heads have revised intake and exhaust port shapes and are designed to really step up the performance on your 114 to 131 cubic inch M8 engine. Stage 2 heads have 41mm intake valves and 33mm exhaust valves. These heads utilize our patented superstock valve job with extensive bowl blending and port work. We have increased the air flow on the intake over 17%, and over 20% on the exhaust. Heads will make over 160 hp and 160 ft/lbs torque on 124 to 131 cubic inch engines. Stage II heads have valve springs that will accept up to .560 lift. All of our heads are flow bench tested to ensure top performance of all heads. You can use our exchange program or we can port your heads.

$1049.95 EXCHANGE

Pricing and availability subject to change without notice.

SUBURBAN SPEED Stage 3 M8 Ported Heads have revised intake and exhaust port shapes and are designed to really step up the performance on your 128 to 135 cubic inch M8 engine. Stage 3 heads have 42mm intake valves and 34mm exhaust valves. These heads utilize our patented superstock valve job with extensive CNC port work. We have increased the air flow on the intake over 20%, and over 23% on the exhaust. Heads will make over 165 hp and 165 ft/lbs torque on 128 to 135 cubic inch engines. Stage 3 heads have valve springs that will accept up to .560 lift. 625 lift springs are available at an extra cost. All of our heads are flow bench tested to ensure top performance of all heads. You can use our exchange program or we can port your heads.

$1299.95 EXCHANGE

.625 valve springs $252.56