Afr Heads Sbf Torque Specs

Afr small block ford.

Afr heads sbf torque specs.

None of these heads will reach their hp and torque potential without proper intake cam and especially matching exhuast. Here is the specs of the renegade afr heads the produced 410 lbs ft of torque and 431 hp from 306 inch 0 030 bore using a 270 hyd roller cam and pump gas for fuel. Intake and 1 600 in. Heads with 1 625 o d springs will require some springs to be removed for access to some head bolts when installing the heads.

Thread sealer is required on 185cc 220cc heads where the intake stud intersects protrudes into the intake port. We strongly recommend using 7 16 rocker studs with today s fast cam rates and rpm capabilities as 3 8 rocker studs can occasionally break. Without thread sealer oil is drawn into the intake port under vacuum and will cause excessive smoking. Heads with 1 625 o d springs will require some springs to be removed for access to some head bolts when installing the heads.

From 800 4000 rpms the smaller heads are a better choice. Afr small block ford. The 165cc heads come with lightweight 8mm 1 900 in. Torque specs sequences and alignment covers 221 260 289 302 boss 302 351w 351c 351m and 400m small block ford engines.

Are furnished with each set of afr aluminum heads. With a 185cc intake runner size the heads fall into the larger side of the 302 based street engine offerings while still being large enough to provide an upgrade in a 351 windsor engine. The 185cc intake runner flows 262cfm at 700 inch of lift and the 64cc exhaust runner flows 168cfm at the same lift. Studs should be torqued to 55 ft lbs.

Both cost more the 205 being the most expensive. These afr 165cc sbf street strip outlaw aluminum cylinder heads come ready for maximum small block ford performance. We strongly recommend using 7 16 rocker studs with today s fast cam rates and rpm capabilities as 3 8 rocker studs can occasionally break. They are not emissions legal.