BlackHeart LS Swap Exhaust Manifolds-Rear Dump SBC Exit-Black - 8506-3HKR single-plane-intake-manifolds 37 Outside Circumference (mm) (Belt):

37 Outside Circumference (mm) (Belt): 1864 Top Width (in) (Belt): 0

They are fully reversible with no negative effects

Oxygen Sensor Location Pre and Post Converter Finish Stainless Steel Material Stainless Steel Series OEM Grade Outlet Attachment Bolt-On Subtitle Federal / EPA Compliant Title OEM Grade Direct-Fit Type Direct-Fit Clamp Included Yes Mounting Hardware Included Yes Body Material Stainless Steel Overall Length (In

4 V8 1968 - 1969 Checker Marathon Base 327/5

5 V8 1975 Pontiac Firebird Trans Am 400/6

BlackHeart LS Swap Exhaust Manifolds-Rear Dump SBC Exit-Black - 8506-3HKR single-plane-intake-manifolds 37 Outside Circumference (mm) (Belt):For applications or projects where our standard LS swap manifolds (8501HKR, 8502HKR, 8503HKR series) don't quite fit and our "center dump" manifold (8504HKR) exits too far forward, our new rear dump and rear dump SBC exit cast iron swap manifolds have arrived. These differ in that they exit in a straight down fashion much like a block hugger header but exit more toward the rear of the engine than our "center dump" manifolds. While almost the same as