AFR Dual Valve Spring - 450 lb. - 1.080 in Coil Bind - 1.270 in OD - AFR Cylinder Heads AA0810AF2X61 Head and Neck Support Straps

Head and Neck Support Straps

5 gal Water

OE oil cooler port provision

1991-1991 GMC R3500

Anyone who struggles to start their Chevy race engine reliably because the starter cant keep up needs to check out the new High Speed DynaForce Starter

AFR Dual Valve Spring - 450 lb. - 1.080 in Coil Bind - 1.270 in OD - AFR Cylinder Heads AA0810AF2X61 Head and Neck Support StrapsProduct Description: Valve Spring Dual Spring 450 lb in Spring Rate 1. 080 in Coil Bind 1. 270 in OD AFR Cylinder Heads Replacement Set of 16 For over thirty years Airflow Research has been defining technological leadership in cylinder head manufacturing and flow dynamics. This complete commitment to performance has enabled Airflow Research's cylinder heads to find themselves on the fastest race cars and the most powerful street machines in the