STRAUB "MAYHEM" VEPR 18° Chevy Small Block Mighty Mouse Induction Packages!!! 

Introducing, the VEPR 18° MAYHEM SBC “Double Hump” head! We have brought the “twin humps” legend back to its former glory as a bolt-on SBC head capable of producing over 700hp, OFF THE SHELF!

The VEPR 18DH is designed to feed a wide range of SBC engine combinations throughout a given RPM range. The trend, over the last 10 years, has been big-cube small blocks. This head is perfect for 3.875” and 4” stroke SBC engine combinations and for the customer that wants a 650HP+ small block Chevy!

These heads, as-cast, are 237cc and come with a 2.15” intake valve and 1.6” exhaust valve inside the 70cc combustion chamber. The head is a 40/60 valve location and uses 23° valvetrain components. It requires a .150” offset, stud-mount rocker on the intake valves and an on-center rocker arm on the exhaust valves. The intake flange is factory GM spec at 5°, making these heads compatible with all GM intake manifolds. The exhaust side of the heads feature D-shaped exhaust ports and has dual bolt-patterns for the standard SBC header flange and the Stahl pattern as well.

These heads use standard port locations.

Kit Includes

2 pc Aluminum Single Plane manifold with 4150 and 4500 Carb adapters

Pair of 18 Degree Cylinder heads, fully machined, and assembled for your choice of hydraulic roller or solid roller

Heads Studs

Your choice of Solid Roller or Hyd Roller for street Strip use

Your choice of Solid Roller Lifters with pressure fed oiling, or Retro Fit Hydraulic Roller Lifters

16 Aluminum Roller Rockers in 1.6 ratio for 7/16" Studs

2-piece guide plates for 3/8" Pushrods

4140 7/16" Rocker Arm Studs

3/8" .083" Wall Pushrods

Head Gaskets, Intake Gaskets, Header Gaskets

2618 Forged Piston Set.  Ceramic Thermal Coated Tops, Gas Ported, and skirt coating with 1.2/1.2/3.0MM Ring Pack Included Pins and Locks *Note all Compression Heights are factored using a 6.00" Connnecting Rod

Steel Ring set 1.2 Top, 1.2" Second, 3.0MM oil ring.  File Fit ring set.