Yella Terra Street Terra Roller Rockers BBC 1.7 HYD Ratio ST2003

Yella TerraStreet Terra is the best value rocker arm on the market today. Engineered to meet or exceed the needs of performance street and sportsman race applications running a maximum open valve spring pressure of 450lbs*.Designed and engineered for optimum strength, the Street Terra vacuum die cast roller rocker features the extreme duty hardware from our premium Platinum series, including oversize ground trunnions and needle roller bearings, ensuring years of trouble free performance and durability. Compatible with Factory Head BB 396, 402, 427, 454. Compatible with Aftermarket Heads w/ factory valvetrain geometry Brodix -1 and -2. Compatible with Brodix 2x, 3, 4 with +.150” or longer inlet valves. Compatible with Chevy Performance Bowtie with +.150” or longer inlet valves. Compatible with Dart Iron Eagle, Pro 1, Big M 410 with +.150” or longer inlet valves. Compatible with Edelbrock Victor Jnr with +.150” or longer inlet valves. Compatible with World Products Merlin with +.150” or longer inlet valves.

EASY FIT Rockers bolt on. Fits standard mountings. No machining required.

Requires guide plates (sold separately) use original where applicable.

Hydraulic kits are designed specifically for use with hydraulic lifters. Adjustable kits are designed for use with both hydraulic and mechanical (solid) lifters.

Extruded from aircraft grade aluminium, perfect for dissipating excess top-end heat.